aboutsummaryrefslogtreecommitdiffstats
path: root/arch/um
diff options
context:
space:
mode:
authorTrond Myklebust <Trond.Myklebust@netapp.com>2005-10-18 16:50:52 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2005-10-18 16:50:52 -0400
commitcff6bf970965c98c62007fc8a36527fd147fe233 (patch)
tree2791f2208b54ade86625af416ff5342f11282f0c /arch/um
parent6cd7525a00f3b926e8bd2e402954ed3e09a8e924 (diff)
parent39ca371c45b04cd50d0974030ae051906fc516b6 (diff)
Merge /home/trondmy/scm/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Makefile70
-rw-r--r--arch/um/Makefile-i38622
-rw-r--r--arch/um/Makefile-skas2
-rw-r--r--arch/um/Makefile-x86_6421
-rw-r--r--arch/um/drivers/Makefile2
-rw-r--r--arch/um/drivers/cow.h39
-rw-r--r--arch/um/drivers/cow_user.c1
-rw-r--r--arch/um/drivers/mconsole_user.c2
-rw-r--r--arch/um/drivers/port_kern.c1
-rw-r--r--arch/um/drivers/ubd_kern.c556
-rw-r--r--arch/um/drivers/ubd_user.c75
-rw-r--r--arch/um/include/aio.h18
-rw-r--r--arch/um/include/common-offsets.h4
-rw-r--r--arch/um/include/os.h9
-rw-r--r--arch/um/include/registers.h12
-rw-r--r--arch/um/include/skas_ptregs.h6
-rw-r--r--arch/um/include/sysdep-i386/sc.h44
-rw-r--r--arch/um/include/sysdep-i386/sigcontext.h10
-rw-r--r--arch/um/include/sysdep-i386/thread.h11
-rw-r--r--arch/um/include/sysdep-x86_64/ptrace.h4
-rw-r--r--arch/um/include/sysdep-x86_64/sc.h45
-rw-r--r--arch/um/include/sysdep-x86_64/sigcontext.h5
-rw-r--r--arch/um/include/sysdep-x86_64/thread.h10
-rw-r--r--arch/um/include/task.h9
-rw-r--r--arch/um/kernel/irq.c1
-rw-r--r--arch/um/kernel/skas/Makefile2
-rw-r--r--arch/um/kernel/skas/util/Makefile5
-rw-r--r--arch/um/kernel/skas/util/mk_ptregs-i386.c49
-rw-r--r--arch/um/kernel/skas/util/mk_ptregs-x86_64.c66
-rw-r--r--arch/um/kernel/sysrq.c8
-rw-r--r--arch/um/kernel/trap_kern.c5
-rw-r--r--arch/um/kernel/um_arch.c2
-rw-r--r--arch/um/os-Linux/aio.c205
-rw-r--r--arch/um/os-Linux/elf_aux.c2
-rw-r--r--arch/um/os-Linux/start_up.c11
-rw-r--r--arch/um/os-Linux/sys-i386/registers.c19
-rw-r--r--arch/um/os-Linux/sys-x86_64/registers.c19
-rw-r--r--arch/um/os-Linux/util/Makefile4
-rw-r--r--arch/um/os-Linux/util/mk_user_constants.c23
-rw-r--r--arch/um/scripts/Makefile.rules4
-rw-r--r--arch/um/sys-i386/Makefile2
-rw-r--r--arch/um/sys-i386/kernel-offsets.c4
-rw-r--r--arch/um/sys-i386/sysrq.c13
-rw-r--r--arch/um/sys-i386/user-offsets.c71
-rw-r--r--arch/um/sys-i386/util/Makefile5
-rw-r--r--arch/um/sys-i386/util/mk_sc.c51
-rw-r--r--arch/um/sys-i386/util/mk_thread.c22
-rw-r--r--arch/um/sys-x86_64/Makefile2
-rw-r--r--arch/um/sys-x86_64/kernel-offsets.c2
-rw-r--r--arch/um/sys-x86_64/stub_segv.c37
-rw-r--r--arch/um/sys-x86_64/user-offsets.c117
-rw-r--r--arch/um/sys-x86_64/util/Makefile8
-rw-r--r--arch/um/sys-x86_64/util/mk_sc.c47
-rw-r--r--arch/um/sys-x86_64/util/mk_thread.c20
-rw-r--r--arch/um/util/Makefile5
-rw-r--r--arch/um/util/mk_constants.c32
-rw-r--r--arch/um/util/mk_task.c30
57 files changed, 846 insertions, 1025 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 5b5af95721ab..e1ffad224605 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -28,8 +28,6 @@ SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))
28ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \ 28ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h 29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
30 30
31GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
32
33um-modes-$(CONFIG_MODE_TT) += tt 31um-modes-$(CONFIG_MODE_TT) += tt
34um-modes-$(CONFIG_MODE_SKAS) += skas 32um-modes-$(CONFIG_MODE_SKAS) += skas
35 33
@@ -45,9 +43,7 @@ endif
45 43
46ARCH_INCLUDE := -I$(ARCH_DIR)/include 44ARCH_INCLUDE := -I$(ARCH_DIR)/include
47ifneq ($(KBUILD_SRC),) 45ifneq ($(KBUILD_SRC),)
48ARCH_INCLUDE += -I$(ARCH_DIR)/include2
49ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include 46ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
50MRPROPER_DIRS += $(ARCH_DIR)/include2
51endif 47endif
52SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) 48SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
53 49
@@ -87,10 +83,6 @@ CONFIG_KERNEL_HALF_GIGS ?= 0
87 83
88SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) 84SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
89 85
90ifeq ($(CONFIG_MODE_SKAS), y)
91$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
92endif
93
94.PHONY: linux 86.PHONY: linux
95 87
96all: linux 88all: linux
@@ -111,7 +103,8 @@ else
111$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) 103$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
112endif 104endif
113 105
114archprepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) 106archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h
107prepare: $(ARCH_DIR)/include/kern_constants.h
115 108
116LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static 109LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
117LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib 110LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
@@ -146,22 +139,20 @@ endef
146#When cleaning we don't include .config, so we don't include 139#When cleaning we don't include .config, so we don't include
147#TT or skas makefiles and don't clean skas_ptregs.h. 140#TT or skas makefiles and don't clean skas_ptregs.h.
148CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ 141CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
149 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \ 142 $(ARCH_DIR)/include/user_constants.h \
150 $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/Kconfig.arch 143 $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch
151 144
152MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ 145MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
153 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os 146 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os
154 147
155archclean: 148archclean:
156 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
157 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/os-$(OS)/util
158 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ 149 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
159 -o -name '*.gcov' \) -type f -print | xargs rm -f 150 -o -name '*.gcov' \) -type f -print | xargs rm -f
160 151
161$(SYMLINK_HEADERS): 152$(SYMLINK_HEADERS):
162 @echo ' SYMLINK $@' 153 @echo ' SYMLINK $@'
163ifneq ($(KBUILD_SRC),) 154ifneq ($(KBUILD_SRC),)
164 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ 155 $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
165else 156else
166 $(Q)cd $(TOPDIR)/$(dir $@) ; \ 157 $(Q)cd $(TOPDIR)/$(dir $@) ; \
167 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) 158 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
@@ -180,9 +171,7 @@ $(ARCH_DIR)/include/sysdep:
180 @echo ' SYMLINK $@' 171 @echo ' SYMLINK $@'
181ifneq ($(KBUILD_SRC),) 172ifneq ($(KBUILD_SRC),)
182 $(Q)mkdir -p $(ARCH_DIR)/include 173 $(Q)mkdir -p $(ARCH_DIR)/include
183 $(Q)mkdir -p $(ARCH_DIR)/include2 174 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
184 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
185 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep
186else 175else
187 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep 176 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
188endif 177endif
@@ -202,8 +191,6 @@ endef
202 191
203define filechk_gen-asm-offsets 192define filechk_gen-asm-offsets
204 (set -e; \ 193 (set -e; \
205 echo "#ifndef __ASM_OFFSETS_H__"; \
206 echo "#define __ASM_OFFSETS_H__"; \
207 echo "/*"; \ 194 echo "/*"; \
208 echo " * DO NOT MODIFY."; \ 195 echo " * DO NOT MODIFY."; \
209 echo " *"; \ 196 echo " *"; \
@@ -212,8 +199,7 @@ define filechk_gen-asm-offsets
212 echo " */"; \ 199 echo " */"; \
213 echo ""; \ 200 echo ""; \
214 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ 201 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
215 echo ""; \ 202 echo ""; )
216 echo "#endif" )
217endef 203endef
218 204
219$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h 205$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
@@ -222,50 +208,18 @@ $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
222$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c 208$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
223 $(CC) $(USER_CFLAGS) -S -o $@ $< 209 $(CC) $(USER_CFLAGS) -S -o $@ $<
224 210
225$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s 211$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s
226 $(call filechk,gen-asm-offsets) 212 $(call filechk,gen-asm-offsets)
227 213
228CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h 214CLEAN_FILES += $(ARCH_DIR)/user-offsets.s
229 215
230$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \ 216$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
231 $(ARCH_SYMLINKS) \ 217 archprepare
232 $(SYS_DIR)/sc.h \
233 include/asm include/linux/version.h \
234 include/config/MARKER \
235 $(ARCH_DIR)/include/user_constants.h
236 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $< 218 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
237 219
238$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s 220$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/kernel-offsets.s
239 $(call filechk,gen-asm-offsets) 221 $(call filechk,gen-asm-offsets)
240 222
241CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h 223CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s
242
243$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
244 $(call filechk,gen_header)
245
246$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
247 $(call filechk,gen_header)
248
249$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
250 $(call filechk,gen_header)
251
252$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
253 $(call filechk,gen_header)
254
255$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
256
257$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
258 FORCE ;
259
260$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
261
262$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
263 $(Q)$(MAKE) $(build)=$@
264
265$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
266 $(Q)$(MAKE) $(build)=$@
267
268$(ARCH_DIR)/os-$(OS)/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
269 $(Q)$(MAKE) $(build)=$@
270 224
271export SUBARCH USER_CFLAGS OS 225export SUBARCH USER_CFLAGS OS
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 1ab431a53ac3..2ee8a2858117 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -32,25 +32,3 @@ CFLAGS += -U__$(SUBARCH)__ -U$(SUBARCH)
32ifneq ($(CONFIG_GPROF),y) 32ifneq ($(CONFIG_GPROF),y)
33ARCH_CFLAGS += -DUM_FASTCALL 33ARCH_CFLAGS += -DUM_FASTCALL
34endif 34endif
35
36SYS_UTIL_DIR := $(ARCH_DIR)/sys-i386/util
37SYS_HEADERS := $(SYS_DIR)/sc.h $(SYS_DIR)/thread.h
38
39prepare: $(SYS_HEADERS)
40
41$(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc
42 $(call filechk,gen_header)
43
44$(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
45 $(call filechk,gen_header)
46
47$(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
48 $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
49
50$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_DIR)/kernel-offsets.h FORCE
51 $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
52
53$(SYS_UTIL_DIR): scripts_basic include/asm FORCE
54 $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR)
55
56CLEAN_FILES += $(SYS_HEADERS)
diff --git a/arch/um/Makefile-skas b/arch/um/Makefile-skas
index fd18ec572271..ac35de5316a6 100644
--- a/arch/um/Makefile-skas
+++ b/arch/um/Makefile-skas
@@ -10,5 +10,3 @@ CFLAGS-$(CONFIG_GCOV) += $(GCOV_OPT)
10CFLAGS-$(CONFIG_GPROF) += $(GPROF_OPT) 10CFLAGS-$(CONFIG_GPROF) += $(GPROF_OPT)
11LINK-$(CONFIG_GCOV) += $(GCOV_OPT) 11LINK-$(CONFIG_GCOV) += $(GCOV_OPT)
12LINK-$(CONFIG_GPROF) += $(GPROF_OPT) 12LINK-$(CONFIG_GPROF) += $(GPROF_OPT)
13
14GEN_HEADERS += $(ARCH_DIR)/include/skas_ptregs.h
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
index 436abbba409b..4f118d5cc2ee 100644
--- a/arch/um/Makefile-x86_64
+++ b/arch/um/Makefile-x86_64
@@ -12,24 +12,3 @@ CHECKFLAGS += -m64
12 12
13ELF_ARCH := i386:x86-64 13ELF_ARCH := i386:x86-64
14ELF_FORMAT := elf64-x86-64 14ELF_FORMAT := elf64-x86-64
15
16SYS_UTIL_DIR := $(ARCH_DIR)/sys-x86_64/util
17SYS_DIR := $(ARCH_DIR)/include/sysdep-x86_64
18
19SYS_HEADERS = $(SYS_DIR)/sc.h $(SYS_DIR)/thread.h
20
21prepare: $(SYS_HEADERS)
22
23$(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc
24 $(call filechk,gen_header)
25
26$(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
27 $(call filechk,gen_header)
28
29$(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
30 $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
31
32$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(GEN_HEADERS) $(ARCH_DIR)/kernel-offsets.h FORCE
33 $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
34
35CLEAN_FILES += $(SYS_HEADERS)
diff --git a/arch/um/drivers/Makefile b/arch/um/drivers/Makefile
index 783e18cae090..de17d4c6e02d 100644
--- a/arch/um/drivers/Makefile
+++ b/arch/um/drivers/Makefile
@@ -13,7 +13,7 @@ mcast-objs := mcast_kern.o mcast_user.o
13net-objs := net_kern.o net_user.o 13net-objs := net_kern.o net_user.o
14mconsole-objs := mconsole_kern.o mconsole_user.o 14mconsole-objs := mconsole_kern.o mconsole_user.o
15hostaudio-objs := hostaudio_kern.o 15hostaudio-objs := hostaudio_kern.o
16ubd-objs := ubd_kern.o 16ubd-objs := ubd_kern.o ubd_user.o
17port-objs := port_kern.o port_user.o 17port-objs := port_kern.o port_user.o
18harddog-objs := harddog_kern.o harddog_user.o 18harddog-objs := harddog_kern.o harddog_user.o
19 19
diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h
index 4fcf3a8d13f4..dc36b222100b 100644
--- a/arch/um/drivers/cow.h
+++ b/arch/um/drivers/cow.h
@@ -3,15 +3,40 @@
3 3
4#include <asm/types.h> 4#include <asm/types.h>
5 5
6#if defined(__BIG_ENDIAN) 6#if defined(__KERNEL__)
7# define ntohll(x) (x) 7
8# define htonll(x) (x) 8# include <asm/byteorder.h>
9#elif defined(__LITTLE_ENDIAN) 9
10# define ntohll(x) bswap_64(x) 10# if defined(__BIG_ENDIAN)
11# define htonll(x) bswap_64(x) 11# define ntohll(x) (x)
12# define htonll(x) (x)
13# elif defined(__LITTLE_ENDIAN)
14# define ntohll(x) be64_to_cpu(x)
15# define htonll(x) cpu_to_be64(x)
16# else
17# error "Could not determine byte order"
18# endif
19
12#else 20#else
13#error "__BYTE_ORDER not defined" 21/* For the definition of ntohl, htonl and __BYTE_ORDER */
22#include <endian.h>
23#include <netinet/in.h>
24#if defined(__BYTE_ORDER)
25
26# if __BYTE_ORDER == __BIG_ENDIAN
27# define ntohll(x) (x)
28# define htonll(x) (x)
29# elif __BYTE_ORDER == __LITTLE_ENDIAN
30# define ntohll(x) bswap_64(x)
31# define htonll(x) bswap_64(x)
32# else
33# error "Could not determine byte order: __BYTE_ORDER uncorrectly defined"
34# endif
35
36#else /* ! defined(__BYTE_ORDER) */
37# error "Could not determine byte order: __BYTE_ORDER not defined"
14#endif 38#endif
39#endif /* ! defined(__KERNEL__) */
15 40
16extern int init_cow_file(int fd, char *cow_file, char *backing_file, 41extern int init_cow_file(int fd, char *cow_file, char *backing_file,
17 int sectorsize, int alignment, int *bitmap_offset_out, 42 int sectorsize, int alignment, int *bitmap_offset_out,
diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c
index a8ce6fc3ef26..fbe2217db5dd 100644
--- a/arch/um/drivers/cow_user.c
+++ b/arch/um/drivers/cow_user.c
@@ -9,7 +9,6 @@
9#include <sys/time.h> 9#include <sys/time.h>
10#include <sys/param.h> 10#include <sys/param.h>
11#include <sys/user.h> 11#include <sys/user.h>
12#include <netinet/in.h>
13 12
14#include "os.h" 13#include "os.h"
15 14
diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c
index 04383f98f4d5..310c1f823f26 100644
--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -23,7 +23,7 @@ static struct mconsole_command commands[] = {
23 { "reboot", mconsole_reboot, MCONSOLE_PROC }, 23 { "reboot", mconsole_reboot, MCONSOLE_PROC },
24 { "config", mconsole_config, MCONSOLE_PROC }, 24 { "config", mconsole_config, MCONSOLE_PROC },
25 { "remove", mconsole_remove, MCONSOLE_PROC }, 25 { "remove", mconsole_remove, MCONSOLE_PROC },
26 { "sysrq", mconsole_sysrq, MCONSOLE_PROC }, 26 { "sysrq", mconsole_sysrq, MCONSOLE_INTR },
27 { "help", mconsole_help, MCONSOLE_INTR }, 27 { "help", mconsole_help, MCONSOLE_INTR },
28 { "cad", mconsole_cad, MCONSOLE_INTR }, 28 { "cad", mconsole_cad, MCONSOLE_INTR },
29 { "stop", mconsole_stop, MCONSOLE_PROC }, 29 { "stop", mconsole_stop, MCONSOLE_PROC },
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index c41efd207fcc..189839e4f1d4 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -7,7 +7,6 @@
7#include "linux/sched.h" 7#include "linux/sched.h"
8#include "linux/slab.h" 8#include "linux/slab.h"
9#include "linux/interrupt.h" 9#include "linux/interrupt.h"
10#include "linux/irq.h"
11#include "linux/spinlock.h" 10#include "linux/spinlock.h"
12#include "linux/errno.h" 11#include "linux/errno.h"
13#include "asm/atomic.h" 12#include "asm/atomic.h"
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index e77a38da4350..f73134333f64 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -35,7 +35,6 @@
35#include "linux/blkpg.h" 35#include "linux/blkpg.h"
36#include "linux/genhd.h" 36#include "linux/genhd.h"
37#include "linux/spinlock.h" 37#include "linux/spinlock.h"
38#include "asm/atomic.h"
39#include "asm/segment.h" 38#include "asm/segment.h"
40#include "asm/uaccess.h" 39#include "asm/uaccess.h"
41#include "asm/irq.h" 40#include "asm/irq.h"
@@ -54,21 +53,20 @@
54#include "mem.h" 53#include "mem.h"
55#include "mem_kern.h" 54#include "mem_kern.h"
56#include "cow.h" 55#include "cow.h"
57#include "aio.h"
58 56
59enum ubd_req { UBD_READ, UBD_WRITE }; 57enum ubd_req { UBD_READ, UBD_WRITE };
60 58
61struct io_thread_req { 59struct io_thread_req {
62 enum aio_type op; 60 enum ubd_req op;
63 int fds[2]; 61 int fds[2];
64 unsigned long offsets[2]; 62 unsigned long offsets[2];
65 unsigned long long offset; 63 unsigned long long offset;
66 unsigned long length; 64 unsigned long length;
67 char *buffer; 65 char *buffer;
68 int sectorsize; 66 int sectorsize;
69 int bitmap_offset; 67 unsigned long sector_mask;
70 long bitmap_start; 68 unsigned long long cow_offset;
71 long bitmap_end; 69 unsigned long bitmap_words[2];
72 int error; 70 int error;
73}; 71};
74 72
@@ -82,31 +80,28 @@ extern int create_cow_file(char *cow_file, char *backing_file,
82 unsigned long *bitmap_len_out, 80 unsigned long *bitmap_len_out,
83 int *data_offset_out); 81 int *data_offset_out);
84extern int read_cow_bitmap(int fd, void *buf, int offset, int len); 82extern int read_cow_bitmap(int fd, void *buf, int offset, int len);
85extern void do_io(struct io_thread_req *req, struct request *r, 83extern void do_io(struct io_thread_req *req);
86 unsigned long *bitmap);
87 84
88static inline int ubd_test_bit(__u64 bit, void *data) 85static inline int ubd_test_bit(__u64 bit, unsigned char *data)
89{ 86{
90 unsigned char *buffer = data;
91 __u64 n; 87 __u64 n;
92 int bits, off; 88 int bits, off;
93 89
94 bits = sizeof(buffer[0]) * 8; 90 bits = sizeof(data[0]) * 8;
95 n = bit / bits; 91 n = bit / bits;
96 off = bit % bits; 92 off = bit % bits;
97 return((buffer[n] & (1 << off)) != 0); 93 return((data[n] & (1 << off)) != 0);
98} 94}
99 95
100static inline void ubd_set_bit(__u64 bit, void *data) 96static inline void ubd_set_bit(__u64 bit, unsigned char *data)
101{ 97{
102 unsigned char *buffer = data;
103 __u64 n; 98 __u64 n;
104 int bits, off; 99 int bits, off;
105 100
106 bits = sizeof(buffer[0]) * 8; 101 bits = sizeof(data[0]) * 8;
107 n = bit / bits; 102 n = bit / bits;
108 off = bit % bits; 103 off = bit % bits;
109 buffer[n] |= (1 << off); 104 data[n] |= (1 << off);
110} 105}
111/*End stuff from ubd_user.h*/ 106/*End stuff from ubd_user.h*/
112 107
@@ -115,6 +110,8 @@ static inline void ubd_set_bit(__u64 bit, void *data)
115static DEFINE_SPINLOCK(ubd_io_lock); 110static DEFINE_SPINLOCK(ubd_io_lock);
116static DEFINE_SPINLOCK(ubd_lock); 111static DEFINE_SPINLOCK(ubd_lock);
117 112
113static void (*do_ubd)(void);
114
118static int ubd_open(struct inode * inode, struct file * filp); 115static int ubd_open(struct inode * inode, struct file * filp);
119static int ubd_release(struct inode * inode, struct file * file); 116static int ubd_release(struct inode * inode, struct file * file);
120static int ubd_ioctl(struct inode * inode, struct file * file, 117static int ubd_ioctl(struct inode * inode, struct file * file,
@@ -161,8 +158,6 @@ struct cow {
161 int data_offset; 158 int data_offset;
162}; 159};
163 160
164#define MAX_SG 64
165
166struct ubd { 161struct ubd {
167 char *file; 162 char *file;
168 int count; 163 int count;
@@ -173,7 +168,6 @@ struct ubd {
173 int no_cow; 168 int no_cow;
174 struct cow cow; 169 struct cow cow;
175 struct platform_device pdev; 170 struct platform_device pdev;
176 struct scatterlist sg[MAX_SG];
177}; 171};
178 172
179#define DEFAULT_COW { \ 173#define DEFAULT_COW { \
@@ -466,114 +460,81 @@ __uml_help(fakehd,
466); 460);
467 461
468static void do_ubd_request(request_queue_t * q); 462static void do_ubd_request(request_queue_t * q);
469static int in_ubd; 463
464/* Only changed by ubd_init, which is an initcall. */
465int thread_fd = -1;
470 466
471/* Changed by ubd_handler, which is serialized because interrupts only 467/* Changed by ubd_handler, which is serialized because interrupts only
472 * happen on CPU 0. 468 * happen on CPU 0.
473 */ 469 */
474int intr_count = 0; 470int intr_count = 0;
475 471
476static void ubd_end_request(struct request *req, int bytes, int uptodate) 472/* call ubd_finish if you need to serialize */
473static void __ubd_finish(struct request *req, int error)
477{ 474{
478 if (!end_that_request_first(req, uptodate, bytes >> 9)) { 475 int nsect;
479 add_disk_randomness(req->rq_disk); 476
480 end_that_request_last(req); 477 if(error){
478 end_request(req, 0);
479 return;
481 } 480 }
481 nsect = req->current_nr_sectors;
482 req->sector += nsect;
483 req->buffer += nsect << 9;
484 req->errors = 0;
485 req->nr_sectors -= nsect;
486 req->current_nr_sectors = 0;
487 end_request(req, 1);
482} 488}
483 489
484/* call ubd_finish if you need to serialize */ 490static inline void ubd_finish(struct request *req, int error)
485static void __ubd_finish(struct request *req, int bytes)
486{ 491{
487 if(bytes < 0){ 492 spin_lock(&ubd_io_lock);
488 ubd_end_request(req, 0, 0); 493 __ubd_finish(req, error);
489 return; 494 spin_unlock(&ubd_io_lock);
490 }
491
492 ubd_end_request(req, bytes, 1);
493} 495}
494 496
495static inline void ubd_finish(struct request *req, int bytes) 497/* Called without ubd_io_lock held */
498static void ubd_handler(void)
496{ 499{
497 spin_lock(&ubd_io_lock); 500 struct io_thread_req req;
498 __ubd_finish(req, bytes); 501 struct request *rq = elv_next_request(ubd_queue);
499 spin_unlock(&ubd_io_lock); 502 int n;
503
504 do_ubd = NULL;
505 intr_count++;
506 n = os_read_file(thread_fd, &req, sizeof(req));
507 if(n != sizeof(req)){
508 printk(KERN_ERR "Pid %d - spurious interrupt in ubd_handler, "
509 "err = %d\n", os_getpid(), -n);
510 spin_lock(&ubd_io_lock);
511 end_request(rq, 0);
512 spin_unlock(&ubd_io_lock);
513 return;
514 }
515
516 ubd_finish(rq, req.error);
517 reactivate_fd(thread_fd, UBD_IRQ);
518 do_ubd_request(ubd_queue);
500} 519}
501 520
502struct bitmap_io {
503 atomic_t count;
504 struct aio_context aio;
505};
506
507struct ubd_aio {
508 struct aio_context aio;
509 struct request *req;
510 int len;
511 struct bitmap_io *bitmap;
512 void *bitmap_buf;
513};
514
515static int ubd_reply_fd = -1;
516
517static irqreturn_t ubd_intr(int irq, void *dev, struct pt_regs *unused) 521static irqreturn_t ubd_intr(int irq, void *dev, struct pt_regs *unused)
518{ 522{
519 struct aio_thread_reply reply; 523 ubd_handler();
520 struct ubd_aio *aio; 524 return(IRQ_HANDLED);
521 struct request *req; 525}
522 int err, n, fd = (int) (long) dev;
523
524 while(1){
525 err = os_read_file(fd, &reply, sizeof(reply));
526 if(err == -EAGAIN)
527 break;
528 if(err < 0){
529 printk("ubd_aio_handler - read returned err %d\n",
530 -err);
531 break;
532 }
533
534 aio = container_of(reply.data, struct ubd_aio, aio);
535 n = reply.err;
536
537 if(n == 0){
538 req = aio->req;
539 req->nr_sectors -= aio->len >> 9;
540
541 if((aio->bitmap != NULL) &&
542 (atomic_dec_and_test(&aio->bitmap->count))){
543 aio->aio = aio->bitmap->aio;
544 aio->len = 0;
545 kfree(aio->bitmap);
546 aio->bitmap = NULL;
547 submit_aio(&aio->aio);
548 }
549 else {
550 if((req->nr_sectors == 0) &&
551 (aio->bitmap == NULL)){
552 int len = req->hard_nr_sectors << 9;
553 ubd_finish(req, len);
554 }
555
556 if(aio->bitmap_buf != NULL)
557 kfree(aio->bitmap_buf);
558 kfree(aio);
559 }
560 }
561 else if(n < 0){
562 ubd_finish(aio->req, n);
563 if(aio->bitmap != NULL)
564 kfree(aio->bitmap);
565 if(aio->bitmap_buf != NULL)
566 kfree(aio->bitmap_buf);
567 kfree(aio);
568 }
569 }
570 reactivate_fd(fd, UBD_IRQ);
571 526
572 do_ubd_request(ubd_queue); 527/* Only changed by ubd_init, which is an initcall. */
528static int io_pid = -1;
573 529
574 return(IRQ_HANDLED); 530void kill_io_thread(void)
531{
532 if(io_pid != -1)
533 os_kill_process(io_pid, 1);
575} 534}
576 535
536__uml_exitcall(kill_io_thread);
537
577static int ubd_file_size(struct ubd *dev, __u64 *size_out) 538static int ubd_file_size(struct ubd *dev, __u64 *size_out)
578{ 539{
579 char *file; 540 char *file;
@@ -608,7 +569,7 @@ static int ubd_open_dev(struct ubd *dev)
608 &dev->cow.data_offset, create_ptr); 569 &dev->cow.data_offset, create_ptr);
609 570
610 if((dev->fd == -ENOENT) && create_cow){ 571 if((dev->fd == -ENOENT) && create_cow){
611 dev->fd = create_cow_file(dev->file, dev->cow.file, 572 dev->fd = create_cow_file(dev->file, dev->cow.file,
612 dev->openflags, 1 << 9, PAGE_SIZE, 573 dev->openflags, 1 << 9, PAGE_SIZE,
613 &dev->cow.bitmap_offset, 574 &dev->cow.bitmap_offset,
614 &dev->cow.bitmap_len, 575 &dev->cow.bitmap_len,
@@ -870,10 +831,6 @@ int ubd_init(void)
870{ 831{
871 int i; 832 int i;
872 833
873 ubd_reply_fd = init_aio_irq(UBD_IRQ, "ubd", ubd_intr);
874 if(ubd_reply_fd < 0)
875 printk("Setting up ubd AIO failed, err = %d\n", ubd_reply_fd);
876
877 devfs_mk_dir("ubd"); 834 devfs_mk_dir("ubd");
878 if (register_blkdev(MAJOR_NR, "ubd")) 835 if (register_blkdev(MAJOR_NR, "ubd"))
879 return -1; 836 return -1;
@@ -884,7 +841,6 @@ int ubd_init(void)
884 return -1; 841 return -1;
885 } 842 }
886 843
887 blk_queue_max_hw_segments(ubd_queue, MAX_SG);
888 if (fake_major != MAJOR_NR) { 844 if (fake_major != MAJOR_NR) {
889 char name[sizeof("ubd_nnn\0")]; 845 char name[sizeof("ubd_nnn\0")];
890 846
@@ -896,12 +852,40 @@ int ubd_init(void)
896 driver_register(&ubd_driver); 852 driver_register(&ubd_driver);
897 for (i = 0; i < MAX_DEV; i++) 853 for (i = 0; i < MAX_DEV; i++)
898 ubd_add(i); 854 ubd_add(i);
899
900 return 0; 855 return 0;
901} 856}
902 857
903late_initcall(ubd_init); 858late_initcall(ubd_init);
904 859
860int ubd_driver_init(void){
861 unsigned long stack;
862 int err;
863
864 /* Set by CONFIG_BLK_DEV_UBD_SYNC or ubd=sync.*/
865 if(global_openflags.s){
866 printk(KERN_INFO "ubd: Synchronous mode\n");
867 /* Letting ubd=sync be like using ubd#s= instead of ubd#= is
868 * enough. So use anyway the io thread. */
869 }
870 stack = alloc_stack(0, 0);
871 io_pid = start_io_thread(stack + PAGE_SIZE - sizeof(void *),
872 &thread_fd);
873 if(io_pid < 0){
874 printk(KERN_ERR
875 "ubd : Failed to start I/O thread (errno = %d) - "
876 "falling back to synchronous I/O\n", -io_pid);
877 io_pid = -1;
878 return(0);
879 }
880 err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
881 SA_INTERRUPT, "ubd", ubd_dev);
882 if(err != 0)
883 printk(KERN_ERR "um_request_irq failed - errno = %d\n", -err);
884 return(err);
885}
886
887device_initcall(ubd_driver_init);
888
905static int ubd_open(struct inode *inode, struct file *filp) 889static int ubd_open(struct inode *inode, struct file *filp)
906{ 890{
907 struct gendisk *disk = inode->i_bdev->bd_disk; 891 struct gendisk *disk = inode->i_bdev->bd_disk;
@@ -939,55 +923,105 @@ static int ubd_release(struct inode * inode, struct file * file)
939 return(0); 923 return(0);
940} 924}
941 925
942static void cowify_bitmap(struct io_thread_req *req, unsigned long *bitmap) 926static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
927 __u64 *cow_offset, unsigned long *bitmap,
928 __u64 bitmap_offset, unsigned long *bitmap_words,
929 __u64 bitmap_len)
943{ 930{
944 __u64 sector = req->offset / req->sectorsize; 931 __u64 sector = io_offset >> 9;
945 int i; 932 int i, update_bitmap = 0;
933
934 for(i = 0; i < length >> 9; i++){
935 if(cow_mask != NULL)
936 ubd_set_bit(i, (unsigned char *) cow_mask);
937 if(ubd_test_bit(sector + i, (unsigned char *) bitmap))
938 continue;
946 939
947 for(i = 0; i < req->length / req->sectorsize; i++){ 940 update_bitmap = 1;
948 if(ubd_test_bit(sector + i, bitmap)) 941 ubd_set_bit(sector + i, (unsigned char *) bitmap);
949 continue; 942 }
943
944 if(!update_bitmap)
945 return;
950 946
951 if(req->bitmap_start == -1) 947 *cow_offset = sector / (sizeof(unsigned long) * 8);
952 req->bitmap_start = sector + i;
953 req->bitmap_end = sector + i + 1;
954 948
955 ubd_set_bit(sector + i, bitmap); 949 /* This takes care of the case where we're exactly at the end of the
956 } 950 * device, and *cow_offset + 1 is off the end. So, just back it up
951 * by one word. Thanks to Lynn Kerby for the fix and James McMechan
952 * for the original diagnosis.
953 */
954 if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) /
955 sizeof(unsigned long) - 1))
956 (*cow_offset)--;
957
958 bitmap_words[0] = bitmap[*cow_offset];
959 bitmap_words[1] = bitmap[*cow_offset + 1];
960
961 *cow_offset *= sizeof(unsigned long);
962 *cow_offset += bitmap_offset;
963}
964
965static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
966 __u64 bitmap_offset, __u64 bitmap_len)
967{
968 __u64 sector = req->offset >> 9;
969 int i;
970
971 if(req->length > (sizeof(req->sector_mask) * 8) << 9)
972 panic("Operation too long");
973
974 if(req->op == UBD_READ) {
975 for(i = 0; i < req->length >> 9; i++){
976 if(ubd_test_bit(sector + i, (unsigned char *) bitmap))
977 ubd_set_bit(i, (unsigned char *)
978 &req->sector_mask);
979 }
980 }
981 else cowify_bitmap(req->offset, req->length, &req->sector_mask,
982 &req->cow_offset, bitmap, bitmap_offset,
983 req->bitmap_words, bitmap_len);
957} 984}
958 985
959/* Called with ubd_io_lock held */ 986/* Called with ubd_io_lock held */
960static int prepare_request(struct request *req, struct io_thread_req *io_req, 987static int prepare_request(struct request *req, struct io_thread_req *io_req)
961 unsigned long long offset, int page_offset,
962 int len, struct page *page)
963{ 988{
964 struct gendisk *disk = req->rq_disk; 989 struct gendisk *disk = req->rq_disk;
965 struct ubd *dev = disk->private_data; 990 struct ubd *dev = disk->private_data;
991 __u64 offset;
992 int len;
993
994 if(req->rq_status == RQ_INACTIVE) return(1);
966 995
967 /* This should be impossible now */ 996 /* This should be impossible now */
968 if((rq_data_dir(req) == WRITE) && !dev->openflags.w){ 997 if((rq_data_dir(req) == WRITE) && !dev->openflags.w){
969 printk("Write attempted on readonly ubd device %s\n", 998 printk("Write attempted on readonly ubd device %s\n",
970 disk->disk_name); 999 disk->disk_name);
971 ubd_end_request(req, 0, 0); 1000 end_request(req, 0);
972 return(1); 1001 return(1);
973 } 1002 }
974 1003
1004 offset = ((__u64) req->sector) << 9;
1005 len = req->current_nr_sectors << 9;
1006
975 io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd; 1007 io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd;
976 io_req->fds[1] = dev->fd; 1008 io_req->fds[1] = dev->fd;
1009 io_req->cow_offset = -1;
977 io_req->offset = offset; 1010 io_req->offset = offset;
978 io_req->length = len; 1011 io_req->length = len;
979 io_req->error = 0; 1012 io_req->error = 0;
980 io_req->op = (rq_data_dir(req) == READ) ? AIO_READ : AIO_WRITE; 1013 io_req->sector_mask = 0;
1014
1015 io_req->op = (rq_data_dir(req) == READ) ? UBD_READ : UBD_WRITE;
981 io_req->offsets[0] = 0; 1016 io_req->offsets[0] = 0;
982 io_req->offsets[1] = dev->cow.data_offset; 1017 io_req->offsets[1] = dev->cow.data_offset;
983 io_req->buffer = page_address(page) + page_offset; 1018 io_req->buffer = req->buffer;
984 io_req->sectorsize = 1 << 9; 1019 io_req->sectorsize = 1 << 9;
985 io_req->bitmap_offset = dev->cow.bitmap_offset;
986 io_req->bitmap_start = -1;
987 io_req->bitmap_end = -1;
988 1020
989 if((dev->cow.file != NULL) && (io_req->op == UBD_WRITE)) 1021 if(dev->cow.file != NULL)
990 cowify_bitmap(io_req, dev->cow.bitmap); 1022 cowify_req(io_req, dev->cow.bitmap, dev->cow.bitmap_offset,
1023 dev->cow.bitmap_len);
1024
991 return(0); 1025 return(0);
992} 1026}
993 1027
@@ -996,36 +1030,30 @@ static void do_ubd_request(request_queue_t *q)
996{ 1030{
997 struct io_thread_req io_req; 1031 struct io_thread_req io_req;
998 struct request *req; 1032 struct request *req;
999 __u64 sector; 1033 int err, n;
1000 int err; 1034
1001 1035 if(thread_fd == -1){
1002 if(in_ubd) 1036 while((req = elv_next_request(q)) != NULL){
1003 return; 1037 err = prepare_request(req, &io_req);
1004 in_ubd = 1; 1038 if(!err){
1005 while((req = elv_next_request(q)) != NULL){ 1039 do_io(&io_req);
1006 struct gendisk *disk = req->rq_disk; 1040 __ubd_finish(req, io_req.error);
1007 struct ubd *dev = disk->private_data; 1041 }
1008 int n, i; 1042 }
1009 1043 }
1010 blkdev_dequeue_request(req); 1044 else {
1011 1045 if(do_ubd || (req = elv_next_request(q)) == NULL)
1012 sector = req->sector; 1046 return;
1013 n = blk_rq_map_sg(q, req, dev->sg); 1047 err = prepare_request(req, &io_req);
1014 1048 if(!err){
1015 for(i = 0; i < n; i++){ 1049 do_ubd = ubd_handler;
1016 struct scatterlist *sg = &dev->sg[i]; 1050 n = os_write_file(thread_fd, (char *) &io_req,
1017 1051 sizeof(io_req));
1018 err = prepare_request(req, &io_req, sector << 9, 1052 if(n != sizeof(io_req))
1019 sg->offset, sg->length, 1053 printk("write to io thread failed, "
1020 sg->page); 1054 "errno = %d\n", -n);
1021 if(err)
1022 continue;
1023
1024 sector += sg->length >> 9;
1025 do_io(&io_req, req, dev->cow.bitmap);
1026 } 1055 }
1027 } 1056 }
1028 in_ubd = 0;
1029} 1057}
1030 1058
1031static int ubd_ioctl(struct inode * inode, struct file * file, 1059static int ubd_ioctl(struct inode * inode, struct file * file,
@@ -1241,95 +1269,131 @@ int create_cow_file(char *cow_file, char *backing_file, struct openflags flags,
1241 return(err); 1269 return(err);
1242} 1270}
1243 1271
1244void do_io(struct io_thread_req *req, struct request *r, unsigned long *bitmap) 1272static int update_bitmap(struct io_thread_req *req)
1245{ 1273{
1246 struct ubd_aio *aio; 1274 int n;
1247 struct bitmap_io *bitmap_io = NULL;
1248 char *buf;
1249 void *bitmap_buf = NULL;
1250 unsigned long len, sector;
1251 int nsectors, start, end, bit, err;
1252 __u64 off;
1253
1254 if(req->bitmap_start != -1){
1255 /* Round up to the nearest word */
1256 int round = sizeof(unsigned long);
1257 len = (req->bitmap_end - req->bitmap_start +
1258 round * 8 - 1) / (round * 8);
1259 len *= round;
1260
1261 off = req->bitmap_start / (8 * round);
1262 off *= round;
1263
1264 bitmap_io = kmalloc(sizeof(*bitmap_io), GFP_KERNEL);
1265 if(bitmap_io == NULL){
1266 printk("Failed to kmalloc bitmap IO\n");
1267 req->error = 1;
1268 return;
1269 }
1270 1275
1271 bitmap_buf = kmalloc(len, GFP_KERNEL); 1276 if(req->cow_offset == -1)
1272 if(bitmap_buf == NULL){ 1277 return(0);
1273 printk("do_io : kmalloc of bitmap chunk "
1274 "failed\n");
1275 kfree(bitmap_io);
1276 req->error = 1;
1277 return;
1278 }
1279 memcpy(bitmap_buf, &bitmap[off / sizeof(bitmap[0])], len);
1280
1281 *bitmap_io = ((struct bitmap_io)
1282 { .count = ATOMIC_INIT(0),
1283 .aio = INIT_AIO(AIO_WRITE, req->fds[1],
1284 bitmap_buf, len,
1285 req->bitmap_offset + off,
1286 ubd_reply_fd) } );
1287 }
1288 1278
1289 nsectors = req->length / req->sectorsize; 1279 n = os_seek_file(req->fds[1], req->cow_offset);
1290 start = 0; 1280 if(n < 0){
1291 end = nsectors; 1281 printk("do_io - bitmap lseek failed : err = %d\n", -n);
1292 bit = 0; 1282 return(1);
1293 do { 1283 }
1294 if(bitmap != NULL){
1295 sector = req->offset / req->sectorsize;
1296 bit = ubd_test_bit(sector + start, bitmap);
1297 end = start;
1298 while((end < nsectors) &&
1299 (ubd_test_bit(sector + end, bitmap) == bit))
1300 end++;
1301 }
1302 1284
1303 off = req->offsets[bit] + req->offset + 1285 n = os_write_file(req->fds[1], &req->bitmap_words,
1304 start * req->sectorsize; 1286 sizeof(req->bitmap_words));
1305 len = (end - start) * req->sectorsize; 1287 if(n != sizeof(req->bitmap_words)){
1306 buf = &req->buffer[start * req->sectorsize]; 1288 printk("do_io - bitmap update failed, err = %d fd = %d\n", -n,
1289 req->fds[1]);
1290 return(1);
1291 }
1307 1292
1308 aio = kmalloc(sizeof(*aio), GFP_KERNEL); 1293 return(0);
1309 if(aio == NULL){ 1294}
1310 req->error = 1;
1311 return;
1312 }
1313 1295
1314 *aio = ((struct ubd_aio) 1296void do_io(struct io_thread_req *req)
1315 { .aio = INIT_AIO(req->op, req->fds[bit], buf, 1297{
1316 len, off, ubd_reply_fd), 1298 char *buf;
1317 .len = len, 1299 unsigned long len;
1318 .req = r, 1300 int n, nsectors, start, end, bit;
1319 .bitmap = bitmap_io, 1301 int err;
1320 .bitmap_buf = bitmap_buf }); 1302 __u64 off;
1321 1303
1322 if(aio->bitmap != NULL) 1304 nsectors = req->length / req->sectorsize;
1323 atomic_inc(&aio->bitmap->count); 1305 start = 0;
1324 1306 do {
1325 err = submit_aio(&aio->aio); 1307 bit = ubd_test_bit(start, (unsigned char *) &req->sector_mask);
1326 if(err){ 1308 end = start;
1327 printk("do_io - submit_aio failed, " 1309 while((end < nsectors) &&
1328 "err = %d\n", err); 1310 (ubd_test_bit(end, (unsigned char *)
1329 req->error = 1; 1311 &req->sector_mask) == bit))
1330 return; 1312 end++;
1331 } 1313
1314 off = req->offset + req->offsets[bit] +
1315 start * req->sectorsize;
1316 len = (end - start) * req->sectorsize;
1317 buf = &req->buffer[start * req->sectorsize];
1318
1319 err = os_seek_file(req->fds[bit], off);
1320 if(err < 0){
1321 printk("do_io - lseek failed : err = %d\n", -err);
1322 req->error = 1;
1323 return;
1324 }
1325 if(req->op == UBD_READ){
1326 n = 0;
1327 do {
1328 buf = &buf[n];
1329 len -= n;
1330 n = os_read_file(req->fds[bit], buf, len);
1331 if (n < 0) {
1332 printk("do_io - read failed, err = %d "
1333 "fd = %d\n", -n, req->fds[bit]);
1334 req->error = 1;
1335 return;
1336 }
1337 } while((n < len) && (n != 0));
1338 if (n < len) memset(&buf[n], 0, len - n);
1339 } else {
1340 n = os_write_file(req->fds[bit], buf, len);
1341 if(n != len){
1342 printk("do_io - write failed err = %d "
1343 "fd = %d\n", -n, req->fds[bit]);
1344 req->error = 1;
1345 return;
1346 }
1347 }
1348
1349 start = end;
1350 } while(start < nsectors);
1332 1351
1333 start = end; 1352 req->error = update_bitmap(req);
1334 } while(start < nsectors);
1335} 1353}
1354
1355/* Changed in start_io_thread, which is serialized by being called only
1356 * from ubd_init, which is an initcall.
1357 */
1358int kernel_fd = -1;
1359
1360/* Only changed by the io thread */
1361int io_count = 0;
1362
1363int io_thread(void *arg)
1364{
1365 struct io_thread_req req;
1366 int n;
1367
1368 ignore_sigwinch_sig();
1369 while(1){
1370 n = os_read_file(kernel_fd, &req, sizeof(req));
1371 if(n != sizeof(req)){
1372 if(n < 0)
1373 printk("io_thread - read failed, fd = %d, "
1374 "err = %d\n", kernel_fd, -n);
1375 else {
1376 printk("io_thread - short read, fd = %d, "
1377 "length = %d\n", kernel_fd, n);
1378 }
1379 continue;
1380 }
1381 io_count++;
1382 do_io(&req);
1383 n = os_write_file(kernel_fd, &req, sizeof(req));
1384 if(n != sizeof(req))
1385 printk("io_thread - write failed, fd = %d, err = %d\n",
1386 kernel_fd, -n);
1387 }
1388}
1389
1390/*
1391 * Overrides for Emacs so that we follow Linus's tabbing style.
1392 * Emacs will notice this stuff at the end of the file and automatically
1393 * adjust the settings for this buffer only. This must remain at the end
1394 * of the file.
1395 * ---------------------------------------------------------------------------
1396 * Local variables:
1397 * c-file-style: "linux"
1398 * End:
1399 */
diff --git a/arch/um/drivers/ubd_user.c b/arch/um/drivers/ubd_user.c
new file mode 100644
index 000000000000..b94d2bc4fe06
--- /dev/null
+++ b/arch/um/drivers/ubd_user.c
@@ -0,0 +1,75 @@
1/*
2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Copyright (C) 2001 Ridgerun,Inc (glonnon@ridgerun.com)
4 * Licensed under the GPL
5 */
6
7#include <stddef.h>
8#include <unistd.h>
9#include <errno.h>
10#include <sched.h>
11#include <signal.h>
12#include <string.h>
13#include <netinet/in.h>
14#include <sys/time.h>
15#include <sys/socket.h>
16#include <sys/mman.h>
17#include <sys/param.h>
18#include "asm/types.h"
19#include "user_util.h"
20#include "kern_util.h"
21#include "user.h"
22#include "ubd_user.h"
23#include "os.h"
24#include "cow.h"
25
26#include <endian.h>
27#include <byteswap.h>
28
29void ignore_sigwinch_sig(void)
30{
31 signal(SIGWINCH, SIG_IGN);
32}
33
34int start_io_thread(unsigned long sp, int *fd_out)
35{
36 int pid, fds[2], err;
37
38 err = os_pipe(fds, 1, 1);
39 if(err < 0){
40 printk("start_io_thread - os_pipe failed, err = %d\n", -err);
41 goto out;
42 }
43
44 kernel_fd = fds[0];
45 *fd_out = fds[1];
46
47 pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM | SIGCHLD,
48 NULL);
49 if(pid < 0){
50 printk("start_io_thread - clone failed : errno = %d\n", errno);
51 err = -errno;
52 goto out_close;
53 }
54
55 return(pid);
56
57 out_close:
58 os_close_file(fds[0]);
59 os_close_file(fds[1]);
60 kernel_fd = -1;
61 *fd_out = -1;
62 out:
63 return(err);
64}
65
66/*
67 * Overrides for Emacs so that we follow Linus's tabbing style.
68 * Emacs will notice this stuff at the end of the file and automatically
69 * adjust the settings for this buffer only. This must remain at the end
70 * of the file.
71 * ---------------------------------------------------------------------------
72 * Local variables:
73 * c-file-style: "linux"
74 * End:
75 */
diff --git a/arch/um/include/aio.h b/arch/um/include/aio.h
index 83f16877ab08..423bae9153f8 100644
--- a/arch/um/include/aio.h
+++ b/arch/um/include/aio.h
@@ -14,27 +14,15 @@ struct aio_thread_reply {
14}; 14};
15 15
16struct aio_context { 16struct aio_context {
17 enum aio_type type;
18 int fd;
19 void *data;
20 int len;
21 unsigned long long offset;
22 int reply_fd; 17 int reply_fd;
23 struct aio_context *next; 18 struct aio_context *next;
24}; 19};
25 20
26#define INIT_AIO(aio_type, aio_fd, aio_data, aio_len, aio_offset, \
27 aio_reply_fd) \
28 { .type = aio_type, \
29 .fd = aio_fd, \
30 .data = aio_data, \
31 .len = aio_len, \
32 .offset = aio_offset, \
33 .reply_fd = aio_reply_fd }
34
35#define INIT_AIO_CONTEXT { .reply_fd = -1, \ 21#define INIT_AIO_CONTEXT { .reply_fd = -1, \
36 .next = NULL } 22 .next = NULL }
37 23
38extern int submit_aio(struct aio_context *aio); 24extern int submit_aio(enum aio_type type, int fd, char *buf, int len,
25 unsigned long long offset, int reply_fd,
26 struct aio_context *aio);
39 27
40#endif 28#endif
diff --git a/arch/um/include/common-offsets.h b/arch/um/include/common-offsets.h
index 782ac3a3baf9..356390d1f8b9 100644
--- a/arch/um/include/common-offsets.h
+++ b/arch/um/include/common-offsets.h
@@ -1,7 +1,7 @@
1/* for use by sys-$SUBARCH/kernel-offsets.c */ 1/* for use by sys-$SUBARCH/kernel-offsets.c */
2 2
3OFFSET(TASK_REGS, task_struct, thread.regs); 3OFFSET(HOST_TASK_REGS, task_struct, thread.regs);
4OFFSET(TASK_PID, task_struct, pid); 4OFFSET(HOST_TASK_PID, task_struct, pid);
5DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE); 5DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE);
6DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); 6DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
7DEFINE_STR(UM_KERN_EMERG, KERN_EMERG); 7DEFINE_STR(UM_KERN_EMERG, KERN_EMERG);
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 583329d0a539..2e58e304b8be 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -6,6 +6,7 @@
6#ifndef __OS_H__ 6#ifndef __OS_H__
7#define __OS_H__ 7#define __OS_H__
8 8
9#include "uml-config.h"
9#include "asm/types.h" 10#include "asm/types.h"
10#include "../os/include/file.h" 11#include "../os/include/file.h"
11 12
@@ -157,6 +158,14 @@ extern int os_lock_file(int fd, int excl);
157extern void os_early_checks(void); 158extern void os_early_checks(void);
158extern int can_do_skas(void); 159extern int can_do_skas(void);
159 160
161/* Make sure they are clear when running in TT mode. Required by
162 * SEGV_MAYBE_FIXABLE */
163#ifdef UML_CONFIG_MODE_SKAS
164#define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0)
165#else
166#define clear_can_do_skas() do {} while (0)
167#endif
168
160/* mem.c */ 169/* mem.c */
161extern int create_mem_file(unsigned long len); 170extern int create_mem_file(unsigned long len);
162 171
diff --git a/arch/um/include/registers.h b/arch/um/include/registers.h
index 0a35e6d0baa0..4892e5fcef07 100644
--- a/arch/um/include/registers.h
+++ b/arch/um/include/registers.h
@@ -15,16 +15,6 @@ extern void save_registers(int pid, union uml_pt_regs *regs);
15extern void restore_registers(int pid, union uml_pt_regs *regs); 15extern void restore_registers(int pid, union uml_pt_regs *regs);
16extern void init_registers(int pid); 16extern void init_registers(int pid);
17extern void get_safe_registers(unsigned long * regs); 17extern void get_safe_registers(unsigned long * regs);
18extern void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer);
18 19
19#endif 20#endif
20
21/*
22 * Overrides for Emacs so that we follow Linus's tabbing style.
23 * Emacs will notice this stuff at the end of the file and automatically
24 * adjust the settings for this buffer only. This must remain at the end
25 * of the file.
26 * ---------------------------------------------------------------------------
27 * Local variables:
28 * c-file-style: "linux"
29 * End:
30 */
diff --git a/arch/um/include/skas_ptregs.h b/arch/um/include/skas_ptregs.h
new file mode 100644
index 000000000000..73db19e9c077
--- /dev/null
+++ b/arch/um/include/skas_ptregs.h
@@ -0,0 +1,6 @@
1#ifndef __SKAS_PT_REGS_
2#define __SKAS_PT_REGS_
3
4#include <user_constants.h>
5
6#endif
diff --git a/arch/um/include/sysdep-i386/sc.h b/arch/um/include/sysdep-i386/sc.h
new file mode 100644
index 000000000000..c57d1780ad37
--- /dev/null
+++ b/arch/um/include/sysdep-i386/sc.h
@@ -0,0 +1,44 @@
1#ifndef __SYSDEP_I386_SC_H
2#define __SYSDEP_I386_SC_H
3
4#include <user_constants.h>
5
6#define SC_OFFSET(sc, field) \
7 *((unsigned long *) &(((char *) (sc))[HOST_##field]))
8#define SC_FP_OFFSET(sc, field) \
9 *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field]))
10#define SC_FP_OFFSET_PTR(sc, field, type) \
11 ((type *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field]))
12
13#define SC_IP(sc) SC_OFFSET(sc, SC_IP)
14#define SC_SP(sc) SC_OFFSET(sc, SC_SP)
15#define SC_FS(sc) SC_OFFSET(sc, SC_FS)
16#define SC_GS(sc) SC_OFFSET(sc, SC_GS)
17#define SC_DS(sc) SC_OFFSET(sc, SC_DS)
18#define SC_ES(sc) SC_OFFSET(sc, SC_ES)
19#define SC_SS(sc) SC_OFFSET(sc, SC_SS)
20#define SC_CS(sc) SC_OFFSET(sc, SC_CS)
21#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS)
22#define SC_EAX(sc) SC_OFFSET(sc, SC_EAX)
23#define SC_EBX(sc) SC_OFFSET(sc, SC_EBX)
24#define SC_ECX(sc) SC_OFFSET(sc, SC_ECX)
25#define SC_EDX(sc) SC_OFFSET(sc, SC_EDX)
26#define SC_EDI(sc) SC_OFFSET(sc, SC_EDI)
27#define SC_ESI(sc) SC_OFFSET(sc, SC_ESI)
28#define SC_EBP(sc) SC_OFFSET(sc, SC_EBP)
29#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
30#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
31#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
32#define SC_FPSTATE(sc) SC_OFFSET(sc, SC_FPSTATE)
33#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK)
34#define SC_FP_CW(sc) SC_FP_OFFSET(sc, SC_FP_CW)
35#define SC_FP_SW(sc) SC_FP_OFFSET(sc, SC_FP_SW)
36#define SC_FP_TAG(sc) SC_FP_OFFSET(sc, SC_FP_TAG)
37#define SC_FP_IPOFF(sc) SC_FP_OFFSET(sc, SC_FP_IPOFF)
38#define SC_FP_CSSEL(sc) SC_FP_OFFSET(sc, SC_FP_CSSEL)
39#define SC_FP_DATAOFF(sc) SC_FP_OFFSET(sc, SC_FP_DATAOFF)
40#define SC_FP_DATASEL(sc) SC_FP_OFFSET(sc, SC_FP_DATASEL)
41#define SC_FP_ST(sc) SC_FP_OFFSET_PTR(sc, SC_FP_ST, struct _fpstate)
42#define SC_FXSR_ENV(sc) SC_FP_OFFSET_PTR(sc, SC_FXSR_ENV, void)
43
44#endif
diff --git a/arch/um/include/sysdep-i386/sigcontext.h b/arch/um/include/sysdep-i386/sigcontext.h
index 1fe729265167..23fd2644d7ed 100644
--- a/arch/um/include/sysdep-i386/sigcontext.h
+++ b/arch/um/include/sysdep-i386/sigcontext.h
@@ -6,6 +6,7 @@
6#ifndef __SYS_SIGCONTEXT_I386_H 6#ifndef __SYS_SIGCONTEXT_I386_H
7#define __SYS_SIGCONTEXT_I386_H 7#define __SYS_SIGCONTEXT_I386_H
8 8
9#include "uml-config.h"
9#include <sysdep/sc.h> 10#include <sysdep/sc.h>
10 11
11#define IP_RESTART_SYSCALL(ip) ((ip) -= 2) 12#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
@@ -26,7 +27,14 @@
26#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0) 27#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
27 28
28/* This is Page Fault */ 29/* This is Page Fault */
29#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) 30#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
31
32/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */
33#ifdef UML_CONFIG_MODE_SKAS
34#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo)
35#else
36#define SEGV_MAYBE_FIXABLE(fi) 0
37#endif
30 38
31extern unsigned long *sc_sigmask(void *sc_ptr); 39extern unsigned long *sc_sigmask(void *sc_ptr);
32extern int sc_get_fpregs(unsigned long buf, void *sc_ptr); 40extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
diff --git a/arch/um/include/sysdep-i386/thread.h b/arch/um/include/sysdep-i386/thread.h
new file mode 100644
index 000000000000..e2bd6bae8b8a
--- /dev/null
+++ b/arch/um/include/sysdep-i386/thread.h
@@ -0,0 +1,11 @@
1#ifndef __UM_THREAD_H
2#define __UM_THREAD_H
3
4#include <kern_constants.h>
5
6#define TASK_DEBUGREGS(task) ((unsigned long *) &(((char *) (task))[HOST_TASK_DEBUGREGS]))
7#ifdef CONFIG_MODE_TT
8#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID]))
9#endif
10
11#endif
diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
index 331aa2d1f3f5..8f0656766c21 100644
--- a/arch/um/include/sysdep-x86_64/ptrace.h
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -218,10 +218,6 @@ struct syscall_args {
218 case RBP: UPT_RBP(regs) = __upt_val; break; \ 218 case RBP: UPT_RBP(regs) = __upt_val; break; \
219 case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ 219 case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
220 case CS: UPT_CS(regs) = __upt_val; break; \ 220 case CS: UPT_CS(regs) = __upt_val; break; \
221 case DS: UPT_DS(regs) = __upt_val; break; \
222 case ES: UPT_ES(regs) = __upt_val; break; \
223 case FS: UPT_FS(regs) = __upt_val; break; \
224 case GS: UPT_GS(regs) = __upt_val; break; \
225 case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ 221 case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
226 default : \ 222 default : \
227 panic("Bad register in UPT_SET : %d\n", reg); \ 223 panic("Bad register in UPT_SET : %d\n", reg); \
diff --git a/arch/um/include/sysdep-x86_64/sc.h b/arch/um/include/sysdep-x86_64/sc.h
new file mode 100644
index 000000000000..a160d9fcc596
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/sc.h
@@ -0,0 +1,45 @@
1#ifndef __SYSDEP_X86_64_SC_H
2#define __SYSDEP_X86_64_SC_H
3
4/* Copyright (C) 2003 - 2004 PathScale, Inc
5 * Released under the GPL
6 */
7
8#include <user_constants.h>
9
10#define SC_OFFSET(sc, field) \
11 *((unsigned long *) &(((char *) (sc))[HOST_##field]))
12
13#define SC_RBX(sc) SC_OFFSET(sc, SC_RBX)
14#define SC_RCX(sc) SC_OFFSET(sc, SC_RCX)
15#define SC_RDX(sc) SC_OFFSET(sc, SC_RDX)
16#define SC_RSI(sc) SC_OFFSET(sc, SC_RSI)
17#define SC_RDI(sc) SC_OFFSET(sc, SC_RDI)
18#define SC_RBP(sc) SC_OFFSET(sc, SC_RBP)
19#define SC_RAX(sc) SC_OFFSET(sc, SC_RAX)
20#define SC_R8(sc) SC_OFFSET(sc, SC_R8)
21#define SC_R9(sc) SC_OFFSET(sc, SC_R9)
22#define SC_R10(sc) SC_OFFSET(sc, SC_R10)
23#define SC_R11(sc) SC_OFFSET(sc, SC_R11)
24#define SC_R12(sc) SC_OFFSET(sc, SC_R12)
25#define SC_R13(sc) SC_OFFSET(sc, SC_R13)
26#define SC_R14(sc) SC_OFFSET(sc, SC_R14)
27#define SC_R15(sc) SC_OFFSET(sc, SC_R15)
28#define SC_IP(sc) SC_OFFSET(sc, SC_IP)
29#define SC_SP(sc) SC_OFFSET(sc, SC_SP)
30#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
31#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
32#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
33#define SC_CS(sc) SC_OFFSET(sc, SC_CS)
34#define SC_FS(sc) SC_OFFSET(sc, SC_FS)
35#define SC_GS(sc) SC_OFFSET(sc, SC_GS)
36#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS)
37#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK)
38#if 0
39#define SC_ORIG_RAX(sc) SC_OFFSET(sc, SC_ORIG_RAX)
40#define SC_DS(sc) SC_OFFSET(sc, SC_DS)
41#define SC_ES(sc) SC_OFFSET(sc, SC_ES)
42#define SC_SS(sc) SC_OFFSET(sc, SC_SS)
43#endif
44
45#endif
diff --git a/arch/um/include/sysdep-x86_64/sigcontext.h b/arch/um/include/sysdep-x86_64/sigcontext.h
index 2a78260d15a0..41073235e7ad 100644
--- a/arch/um/include/sysdep-x86_64/sigcontext.h
+++ b/arch/um/include/sysdep-x86_64/sigcontext.h
@@ -31,7 +31,10 @@
31#define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0) 31#define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
32 32
33/* This is Page Fault */ 33/* This is Page Fault */
34#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) 34#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
35
36/* No broken SKAS API, which doesn't pass trap_no, here. */
37#define SEGV_MAYBE_FIXABLE(fi) 0
35 38
36extern unsigned long *sc_sigmask(void *sc_ptr); 39extern unsigned long *sc_sigmask(void *sc_ptr);
37 40
diff --git a/arch/um/include/sysdep-x86_64/thread.h b/arch/um/include/sysdep-x86_64/thread.h
new file mode 100644
index 000000000000..6a76a7f3683f
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/thread.h
@@ -0,0 +1,10 @@
1#ifndef __UM_THREAD_H
2#define __UM_THREAD_H
3
4#include <kern_constants.h>
5
6#ifdef CONFIG_MODE_TT
7#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID]))
8#endif
9
10#endif
diff --git a/arch/um/include/task.h b/arch/um/include/task.h
new file mode 100644
index 000000000000..6375ba7203c9
--- /dev/null
+++ b/arch/um/include/task.h
@@ -0,0 +1,9 @@
1#ifndef __TASK_H
2#define __TASK_H
3
4#include <kern_constants.h>
5
6#define TASK_REGS(task) ((union uml_pt_regs *) &(((char *) (task))[HOST_TASK_REGS]))
7#define TASK_PID(task) *((int *) &(((char *) (task))[HOST_TASK_PID]))
8
9#endif
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index dcd814971995..bbf94bf2921e 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -9,7 +9,6 @@
9#include "linux/kernel.h" 9#include "linux/kernel.h"
10#include "linux/module.h" 10#include "linux/module.h"
11#include "linux/smp.h" 11#include "linux/smp.h"
12#include "linux/irq.h"
13#include "linux/kernel_stat.h" 12#include "linux/kernel_stat.h"
14#include "linux/interrupt.h" 13#include "linux/interrupt.h"
15#include "linux/random.h" 14#include "linux/random.h"
diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile
index db36c7c95940..8de471b59c1c 100644
--- a/arch/um/kernel/skas/Makefile
+++ b/arch/um/kernel/skas/Makefile
@@ -6,8 +6,6 @@
6obj-y := clone.o exec_kern.o mem.o mem_user.o mmu.o process.o process_kern.o \ 6obj-y := clone.o exec_kern.o mem.o mem_user.o mmu.o process.o process_kern.o \
7 syscall.o tlb.o trap_user.o uaccess.o 7 syscall.o tlb.o trap_user.o uaccess.o
8 8
9subdir- := util
10
11USER_OBJS := process.o clone.o 9USER_OBJS := process.o clone.o
12 10
13include arch/um/scripts/Makefile.rules 11include arch/um/scripts/Makefile.rules
diff --git a/arch/um/kernel/skas/util/Makefile b/arch/um/kernel/skas/util/Makefile
deleted file mode 100644
index f7b7eba83340..000000000000
--- a/arch/um/kernel/skas/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1hostprogs-y := mk_ptregs
2always := $(hostprogs-y)
3
4mk_ptregs-objs := mk_ptregs-$(SUBARCH).o
5HOSTCFLAGS_mk_ptregs-$(SUBARCH).o := -I$(objtree)/arch/um
diff --git a/arch/um/kernel/skas/util/mk_ptregs-i386.c b/arch/um/kernel/skas/util/mk_ptregs-i386.c
deleted file mode 100644
index 1f96e1eeb8a7..000000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-i386.c
+++ /dev/null
@@ -1,49 +0,0 @@
1#include <stdio.h>
2#include <user-offsets.h>
3
4#define SHOW(name) printf("#define %s %d\n", #name, name)
5
6int main(int argc, char **argv)
7{
8 printf("/* Automatically generated by "
9 "arch/um/kernel/skas/util/mk_ptregs */\n");
10 printf("\n");
11 printf("#ifndef __SKAS_PT_REGS_\n");
12 printf("#define __SKAS_PT_REGS_\n");
13 printf("\n");
14 SHOW(HOST_FRAME_SIZE);
15 SHOW(HOST_FP_SIZE);
16 SHOW(HOST_XFP_SIZE);
17
18 SHOW(HOST_IP);
19 SHOW(HOST_SP);
20 SHOW(HOST_EFLAGS);
21 SHOW(HOST_EAX);
22 SHOW(HOST_EBX);
23 SHOW(HOST_ECX);
24 SHOW(HOST_EDX);
25 SHOW(HOST_ESI);
26 SHOW(HOST_EDI);
27 SHOW(HOST_EBP);
28 SHOW(HOST_CS);
29 SHOW(HOST_SS);
30 SHOW(HOST_DS);
31 SHOW(HOST_FS);
32 SHOW(HOST_ES);
33 SHOW(HOST_GS);
34
35 printf("\n");
36 printf("#endif\n");
37 return(0);
38}
39
40/*
41 * Overrides for Emacs so that we follow Linus's tabbing style.
42 * Emacs will notice this stuff at the end of the file and automatically
43 * adjust the settings for this buffer only. This must remain at the end
44 * of the file.
45 * ---------------------------------------------------------------------------
46 * Local variables:
47 * c-file-style: "linux"
48 * End:
49 */
diff --git a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
deleted file mode 100644
index 5fccbfe35f78..000000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
+++ /dev/null
@@ -1,66 +0,0 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include <stdio.h>
8#include <user-offsets.h>
9
10#define SHOW(name) \
11 printf("#define %s (%d / sizeof(unsigned long))\n", #name, name)
12
13int main(int argc, char **argv)
14{
15 printf("/* Automatically generated by "
16 "arch/um/kernel/skas/util/mk_ptregs */\n");
17 printf("\n");
18 printf("#ifndef __SKAS_PT_REGS_\n");
19 printf("#define __SKAS_PT_REGS_\n");
20 SHOW(HOST_FRAME_SIZE);
21 SHOW(HOST_RBX);
22 SHOW(HOST_RCX);
23 SHOW(HOST_RDI);
24 SHOW(HOST_RSI);
25 SHOW(HOST_RDX);
26 SHOW(HOST_RBP);
27 SHOW(HOST_RAX);
28 SHOW(HOST_R8);
29 SHOW(HOST_R9);
30 SHOW(HOST_R10);
31 SHOW(HOST_R11);
32 SHOW(HOST_R12);
33 SHOW(HOST_R13);
34 SHOW(HOST_R14);
35 SHOW(HOST_R15);
36 SHOW(HOST_ORIG_RAX);
37 SHOW(HOST_CS);
38 SHOW(HOST_SS);
39 SHOW(HOST_EFLAGS);
40#if 0
41 SHOW(HOST_FS);
42 SHOW(HOST_GS);
43 SHOW(HOST_DS);
44 SHOW(HOST_ES);
45#endif
46
47 SHOW(HOST_IP);
48 SHOW(HOST_SP);
49 printf("#define HOST_FP_SIZE 0\n");
50 printf("#define HOST_XFP_SIZE 0\n");
51 printf("\n");
52 printf("\n");
53 printf("#endif\n");
54 return(0);
55}
56
57/*
58 * Overrides for Emacs so that we follow Linus's tabbing style.
59 * Emacs will notice this stuff at the end of the file and automatically
60 * adjust the settings for this buffer only. This must remain at the end
61 * of the file.
62 * ---------------------------------------------------------------------------
63 * Local variables:
64 * c-file-style: "linux"
65 * End:
66 */
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index f80850091e79..b331e970002f 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -62,13 +62,7 @@ void show_stack(struct task_struct *task, unsigned long *esp)
62 62
63 if (esp == NULL) { 63 if (esp == NULL) {
64 if (task != current && task != NULL) { 64 if (task != current && task != NULL) {
65 /* XXX: Isn't this bogus? I.e. isn't this the
66 * *userspace* stack of this task? If not so, use this
67 * even when task == current (as in i386).
68 */
69 esp = (unsigned long *) KSTK_ESP(task); 65 esp = (unsigned long *) KSTK_ESP(task);
70 /* Which one? No actual difference - just coding style.*/
71 //esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
72 } else { 66 } else {
73 esp = (unsigned long *) &esp; 67 esp = (unsigned long *) &esp;
74 } 68 }
@@ -84,5 +78,5 @@ void show_stack(struct task_struct *task, unsigned long *esp)
84 } 78 }
85 79
86 printk("Call Trace: \n"); 80 printk("Call Trace: \n");
87 show_trace(current, esp); 81 show_trace(task, esp);
88} 82}
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index d297429ac360..95c8f8733baf 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -26,6 +26,9 @@
26#include "mconsole_kern.h" 26#include "mconsole_kern.h"
27#include "mem.h" 27#include "mem.h"
28#include "mem_kern.h" 28#include "mem_kern.h"
29#ifdef CONFIG_MODE_SKAS
30#include "skas.h"
31#endif
29 32
30/* Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by segv(). */ 33/* Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by segv(). */
31int handle_page_fault(unsigned long address, unsigned long ip, 34int handle_page_fault(unsigned long address, unsigned long ip,
@@ -134,7 +137,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
134 else if(current->mm == NULL) 137 else if(current->mm == NULL)
135 panic("Segfault with no mm"); 138 panic("Segfault with no mm");
136 139
137 if (SEGV_IS_FIXABLE(&fi)) 140 if (SEGV_IS_FIXABLE(&fi) || SEGV_MAYBE_FIXABLE(&fi))
138 err = handle_page_fault(address, ip, is_write, is_user, &si.si_code); 141 err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
139 else { 142 else {
140 err = -EFAULT; 143 err = -EFAULT;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index f0a275947d34..93dc782dc1cc 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -334,6 +334,8 @@ int linux_main(int argc, char **argv)
334 add_arg(DEFAULT_COMMAND_LINE); 334 add_arg(DEFAULT_COMMAND_LINE);
335 335
336 os_early_checks(); 336 os_early_checks();
337 if (force_tt)
338 clear_can_do_skas();
337 mode_tt = force_tt ? 1 : !can_do_skas(); 339 mode_tt = force_tt ? 1 : !can_do_skas();
338#ifndef CONFIG_MODE_TT 340#ifndef CONFIG_MODE_TT
339 if (mode_tt) { 341 if (mode_tt) {
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
index f6e64026f995..41cfb0944201 100644
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -6,7 +6,6 @@
6#include <stdlib.h> 6#include <stdlib.h>
7#include <unistd.h> 7#include <unistd.h>
8#include <signal.h> 8#include <signal.h>
9#include <string.h>
10#include <errno.h> 9#include <errno.h>
11#include <sched.h> 10#include <sched.h>
12#include <sys/syscall.h> 11#include <sys/syscall.h>
@@ -17,31 +16,18 @@
17#include "user.h" 16#include "user.h"
18#include "mode.h" 17#include "mode.h"
19 18
19struct aio_thread_req {
20 enum aio_type type;
21 int io_fd;
22 unsigned long long offset;
23 char *buf;
24 int len;
25 struct aio_context *aio;
26};
27
20static int aio_req_fd_r = -1; 28static int aio_req_fd_r = -1;
21static int aio_req_fd_w = -1; 29static int aio_req_fd_w = -1;
22 30
23static int update_aio(struct aio_context *aio, int res)
24{
25 if(res < 0)
26 aio->len = res;
27 else if((res == 0) && (aio->type == AIO_READ)){
28 /* This is the EOF case - we have hit the end of the file
29 * and it ends in a partial block, so we fill the end of
30 * the block with zeros and claim success.
31 */
32 memset(aio->data, 0, aio->len);
33 aio->len = 0;
34 }
35 else if(res > 0){
36 aio->len -= res;
37 aio->data += res;
38 aio->offset += res;
39 return aio->len;
40 }
41
42 return 0;
43}
44
45#if defined(HAVE_AIO_ABI) 31#if defined(HAVE_AIO_ABI)
46#include <linux/aio_abi.h> 32#include <linux/aio_abi.h>
47 33
@@ -80,7 +66,8 @@ static long io_getevents(aio_context_t ctx_id, long min_nr, long nr,
80 * that it now backs the mmapped area. 66 * that it now backs the mmapped area.
81 */ 67 */
82 68
83static int do_aio(aio_context_t ctx, struct aio_context *aio) 69static int do_aio(aio_context_t ctx, enum aio_type type, int fd, char *buf,
70 int len, unsigned long long offset, struct aio_context *aio)
84{ 71{
85 struct iocb iocb, *iocbp = &iocb; 72 struct iocb iocb, *iocbp = &iocb;
86 char c; 73 char c;
@@ -88,39 +75,40 @@ static int do_aio(aio_context_t ctx, struct aio_context *aio)
88 75
89 iocb = ((struct iocb) { .aio_data = (unsigned long) aio, 76 iocb = ((struct iocb) { .aio_data = (unsigned long) aio,
90 .aio_reqprio = 0, 77 .aio_reqprio = 0,
91 .aio_fildes = aio->fd, 78 .aio_fildes = fd,
92 .aio_buf = (unsigned long) aio->data, 79 .aio_buf = (unsigned long) buf,
93 .aio_nbytes = aio->len, 80 .aio_nbytes = len,
94 .aio_offset = aio->offset, 81 .aio_offset = offset,
95 .aio_reserved1 = 0, 82 .aio_reserved1 = 0,
96 .aio_reserved2 = 0, 83 .aio_reserved2 = 0,
97 .aio_reserved3 = 0 }); 84 .aio_reserved3 = 0 });
98 85
99 switch(aio->type){ 86 switch(type){
100 case AIO_READ: 87 case AIO_READ:
101 iocb.aio_lio_opcode = IOCB_CMD_PREAD; 88 iocb.aio_lio_opcode = IOCB_CMD_PREAD;
89 err = io_submit(ctx, 1, &iocbp);
102 break; 90 break;
103 case AIO_WRITE: 91 case AIO_WRITE:
104 iocb.aio_lio_opcode = IOCB_CMD_PWRITE; 92 iocb.aio_lio_opcode = IOCB_CMD_PWRITE;
93 err = io_submit(ctx, 1, &iocbp);
105 break; 94 break;
106 case AIO_MMAP: 95 case AIO_MMAP:
107 iocb.aio_lio_opcode = IOCB_CMD_PREAD; 96 iocb.aio_lio_opcode = IOCB_CMD_PREAD;
108 iocb.aio_buf = (unsigned long) &c; 97 iocb.aio_buf = (unsigned long) &c;
109 iocb.aio_nbytes = sizeof(c); 98 iocb.aio_nbytes = sizeof(c);
99 err = io_submit(ctx, 1, &iocbp);
110 break; 100 break;
111 default: 101 default:
112 printk("Bogus op in do_aio - %d\n", aio->type); 102 printk("Bogus op in do_aio - %d\n", type);
113 err = -EINVAL; 103 err = -EINVAL;
114 goto out; 104 break;
115 } 105 }
116 106
117 err = io_submit(ctx, 1, &iocbp);
118 if(err > 0) 107 if(err > 0)
119 err = 0; 108 err = 0;
120 else 109 else
121 err = -errno; 110 err = -errno;
122 111
123 out:
124 return err; 112 return err;
125} 113}
126 114
@@ -129,9 +117,8 @@ static aio_context_t ctx = 0;
129static int aio_thread(void *arg) 117static int aio_thread(void *arg)
130{ 118{
131 struct aio_thread_reply reply; 119 struct aio_thread_reply reply;
132 struct aio_context *aio;
133 struct io_event event; 120 struct io_event event;
134 int err, n; 121 int err, n, reply_fd;
135 122
136 signal(SIGWINCH, SIG_IGN); 123 signal(SIGWINCH, SIG_IGN);
137 124
@@ -144,22 +131,14 @@ static int aio_thread(void *arg)
144 "errno = %d\n", errno); 131 "errno = %d\n", errno);
145 } 132 }
146 else { 133 else {
147 /* This is safe as we've just a pointer here. */
148 aio = (struct aio_context *) (long) event.data;
149 if(update_aio(aio, event.res)){
150 do_aio(ctx, aio);
151 continue;
152 }
153
154 reply = ((struct aio_thread_reply) 134 reply = ((struct aio_thread_reply)
155 { .data = aio, 135 { .data = (void *) (long) event.data,
156 .err = aio->len }); 136 .err = event.res });
157 err = os_write_file(aio->reply_fd, &reply, 137 reply_fd = ((struct aio_context *) reply.data)->reply_fd;
158 sizeof(reply)); 138 err = os_write_file(reply_fd, &reply, sizeof(reply));
159 if(err != sizeof(reply)) 139 if(err != sizeof(reply))
160 printk("aio_thread - write failed, " 140 printk("aio_thread - write failed, fd = %d, "
161 "fd = %d, err = %d\n", aio->reply_fd, 141 "err = %d\n", aio_req_fd_r, -err);
162 -err);
163 } 142 }
164 } 143 }
165 return 0; 144 return 0;
@@ -167,35 +146,35 @@ static int aio_thread(void *arg)
167 146
168#endif 147#endif
169 148
170static int do_not_aio(struct aio_context *aio) 149static int do_not_aio(struct aio_thread_req *req)
171{ 150{
172 char c; 151 char c;
173 int err; 152 int err;
174 153
175 switch(aio->type){ 154 switch(req->type){
176 case AIO_READ: 155 case AIO_READ:
177 err = os_seek_file(aio->fd, aio->offset); 156 err = os_seek_file(req->io_fd, req->offset);
178 if(err) 157 if(err)
179 goto out; 158 goto out;
180 159
181 err = os_read_file(aio->fd, aio->data, aio->len); 160 err = os_read_file(req->io_fd, req->buf, req->len);
182 break; 161 break;
183 case AIO_WRITE: 162 case AIO_WRITE:
184 err = os_seek_file(aio->fd, aio->offset); 163 err = os_seek_file(req->io_fd, req->offset);
185 if(err) 164 if(err)
186 goto out; 165 goto out;
187 166
188 err = os_write_file(aio->fd, aio->data, aio->len); 167 err = os_write_file(req->io_fd, req->buf, req->len);
189 break; 168 break;
190 case AIO_MMAP: 169 case AIO_MMAP:
191 err = os_seek_file(aio->fd, aio->offset); 170 err = os_seek_file(req->io_fd, req->offset);
192 if(err) 171 if(err)
193 goto out; 172 goto out;
194 173
195 err = os_read_file(aio->fd, &c, sizeof(c)); 174 err = os_read_file(req->io_fd, &c, sizeof(c));
196 break; 175 break;
197 default: 176 default:
198 printk("do_not_aio - bad request type : %d\n", aio->type); 177 printk("do_not_aio - bad request type : %d\n", req->type);
199 err = -EINVAL; 178 err = -EINVAL;
200 break; 179 break;
201 } 180 }
@@ -206,14 +185,14 @@ static int do_not_aio(struct aio_context *aio)
206 185
207static int not_aio_thread(void *arg) 186static int not_aio_thread(void *arg)
208{ 187{
209 struct aio_context *aio; 188 struct aio_thread_req req;
210 struct aio_thread_reply reply; 189 struct aio_thread_reply reply;
211 int err; 190 int err;
212 191
213 signal(SIGWINCH, SIG_IGN); 192 signal(SIGWINCH, SIG_IGN);
214 while(1){ 193 while(1){
215 err = os_read_file(aio_req_fd_r, &aio, sizeof(aio)); 194 err = os_read_file(aio_req_fd_r, &req, sizeof(req));
216 if(err != sizeof(aio)){ 195 if(err != sizeof(req)){
217 if(err < 0) 196 if(err < 0)
218 printk("not_aio_thread - read failed, " 197 printk("not_aio_thread - read failed, "
219 "fd = %d, err = %d\n", aio_req_fd_r, 198 "fd = %d, err = %d\n", aio_req_fd_r,
@@ -224,34 +203,17 @@ static int not_aio_thread(void *arg)
224 } 203 }
225 continue; 204 continue;
226 } 205 }
227 again: 206 err = do_not_aio(&req);
228 err = do_not_aio(aio); 207 reply = ((struct aio_thread_reply) { .data = req.aio,
229 208 .err = err });
230 if(update_aio(aio, err)) 209 err = os_write_file(req.aio->reply_fd, &reply, sizeof(reply));
231 goto again;
232
233 reply = ((struct aio_thread_reply) { .data = aio,
234 .err = aio->len });
235 err = os_write_file(aio->reply_fd, &reply, sizeof(reply));
236 if(err != sizeof(reply)) 210 if(err != sizeof(reply))
237 printk("not_aio_thread - write failed, fd = %d, " 211 printk("not_aio_thread - write failed, fd = %d, "
238 "err = %d\n", aio_req_fd_r, -err); 212 "err = %d\n", aio_req_fd_r, -err);
239 } 213 }
240} 214}
241 215
242static int submit_aio_24(struct aio_context *aio)
243{
244 int err;
245
246 err = os_write_file(aio_req_fd_w, &aio, sizeof(aio));
247 if(err == sizeof(aio))
248 err = 0;
249
250 return err;
251}
252
253static int aio_pid = -1; 216static int aio_pid = -1;
254static int (*submit_proc)(struct aio_context *aio);
255 217
256static int init_aio_24(void) 218static int init_aio_24(void)
257{ 219{
@@ -283,33 +245,11 @@ static int init_aio_24(void)
283#endif 245#endif
284 printk("2.6 host AIO support not used - falling back to I/O " 246 printk("2.6 host AIO support not used - falling back to I/O "
285 "thread\n"); 247 "thread\n");
286
287 submit_proc = submit_aio_24;
288
289 return 0; 248 return 0;
290} 249}
291 250
292#ifdef HAVE_AIO_ABI 251#ifdef HAVE_AIO_ABI
293#define DEFAULT_24_AIO 0 252#define DEFAULT_24_AIO 0
294static int submit_aio_26(struct aio_context *aio)
295{
296 struct aio_thread_reply reply;
297 int err;
298
299 err = do_aio(ctx, aio);
300 if(err){
301 reply = ((struct aio_thread_reply) { .data = aio,
302 .err = err });
303 err = os_write_file(aio->reply_fd, &reply, sizeof(reply));
304 if(err != sizeof(reply))
305 printk("submit_aio_26 - write failed, "
306 "fd = %d, err = %d\n", aio->reply_fd, -err);
307 else err = 0;
308 }
309
310 return err;
311}
312
313static int init_aio_26(void) 253static int init_aio_26(void)
314{ 254{
315 unsigned long stack; 255 unsigned long stack;
@@ -330,22 +270,39 @@ static int init_aio_26(void)
330 aio_pid = err; 270 aio_pid = err;
331 271
332 printk("Using 2.6 host AIO\n"); 272 printk("Using 2.6 host AIO\n");
273 return 0;
274}
275
276static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len,
277 unsigned long long offset, struct aio_context *aio)
278{
279 struct aio_thread_reply reply;
280 int err;
333 281
334 submit_proc = submit_aio_26; 282 err = do_aio(ctx, type, io_fd, buf, len, offset, aio);
283 if(err){
284 reply = ((struct aio_thread_reply) { .data = aio,
285 .err = err });
286 err = os_write_file(aio->reply_fd, &reply, sizeof(reply));
287 if(err != sizeof(reply))
288 printk("submit_aio_26 - write failed, "
289 "fd = %d, err = %d\n", aio->reply_fd, -err);
290 else err = 0;
291 }
335 292
336 return 0; 293 return err;
337} 294}
338 295
339#else 296#else
340#define DEFAULT_24_AIO 1 297#define DEFAULT_24_AIO 1
341static int submit_aio_26(struct aio_context *aio) 298static int init_aio_26(void)
342{ 299{
343 return -ENOSYS; 300 return -ENOSYS;
344} 301}
345 302
346static int init_aio_26(void) 303static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len,
304 unsigned long long offset, struct aio_context *aio)
347{ 305{
348 submit_proc = submit_aio_26;
349 return -ENOSYS; 306 return -ENOSYS;
350} 307}
351#endif 308#endif
@@ -412,7 +369,33 @@ static void exit_aio(void)
412 369
413__uml_exitcall(exit_aio); 370__uml_exitcall(exit_aio);
414 371
415int submit_aio(struct aio_context *aio) 372static int submit_aio_24(enum aio_type type, int io_fd, char *buf, int len,
373 unsigned long long offset, struct aio_context *aio)
416{ 374{
417 return (*submit_proc)(aio); 375 struct aio_thread_req req = { .type = type,
376 .io_fd = io_fd,
377 .offset = offset,
378 .buf = buf,
379 .len = len,
380 .aio = aio,
381 };
382 int err;
383
384 err = os_write_file(aio_req_fd_w, &req, sizeof(req));
385 if(err == sizeof(req))
386 err = 0;
387
388 return err;
389}
390
391int submit_aio(enum aio_type type, int io_fd, char *buf, int len,
392 unsigned long long offset, int reply_fd,
393 struct aio_context *aio)
394{
395 aio->reply_fd = reply_fd;
396 if(aio_24)
397 return submit_aio_24(type, io_fd, buf, len, offset, aio);
398 else {
399 return submit_aio_26(type, io_fd, buf, len, offset, aio);
400 }
418} 401}
diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c
index ab33cb3c74ec..5a99dd3fbed0 100644
--- a/arch/um/os-Linux/elf_aux.c
+++ b/arch/um/os-Linux/elf_aux.c
@@ -12,7 +12,7 @@
12#include "init.h" 12#include "init.h"
13#include "elf_user.h" 13#include "elf_user.h"
14#include "mem_user.h" 14#include "mem_user.h"
15#include <kernel-offsets.h> 15#include <kern_constants.h>
16 16
17/* Use the one from the kernel - the host may miss it, if having old headers. */ 17/* Use the one from the kernel - the host may miss it, if having old headers. */
18#if UM_ELF_CLASS == UM_ELFCLASS32 18#if UM_ELF_CLASS == UM_ELFCLASS32
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6af83171ca4e..b99ab414542f 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -143,11 +143,22 @@ static int __init skas0_cmd_param(char *str, int* add)
143 return 0; 143 return 0;
144} 144}
145 145
146/* The two __uml_setup would conflict, without this stupid alias. */
147
148static int __init mode_skas0_cmd_param(char *str, int* add)
149 __attribute__((alias("skas0_cmd_param")));
150
146__uml_setup("skas0", skas0_cmd_param, 151__uml_setup("skas0", skas0_cmd_param,
147 "skas0\n" 152 "skas0\n"
148 " Disables SKAS3 usage, so that SKAS0 is used, unless \n" 153 " Disables SKAS3 usage, so that SKAS0 is used, unless \n"
149 " you specify mode=tt.\n\n"); 154 " you specify mode=tt.\n\n");
150 155
156__uml_setup("mode=skas0", mode_skas0_cmd_param,
157 "mode=skas0\n"
158 " Disables SKAS3 usage, so that SKAS0 is used, unless you \n"
159 " specify mode=tt. Note that this was recently added - on \n"
160 " older kernels you must use simply \"skas0\".\n\n");
161
151static int force_sysemu_disabled = 0; 162static int force_sysemu_disabled = 0;
152 163
153static int __init nosysemu_cmd_param(char *str, int* add) 164static int __init nosysemu_cmd_param(char *str, int* add)
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
index 3125d320722c..aee4812333c6 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-i386/registers.c
@@ -5,6 +5,7 @@
5 5
6#include <errno.h> 6#include <errno.h>
7#include <string.h> 7#include <string.h>
8#include <setjmp.h>
8#include "sysdep/ptrace_user.h" 9#include "sysdep/ptrace_user.h"
9#include "sysdep/ptrace.h" 10#include "sysdep/ptrace.h"
10#include "uml-config.h" 11#include "uml-config.h"
@@ -126,13 +127,11 @@ void get_safe_registers(unsigned long *regs)
126 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long)); 127 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
127} 128}
128 129
129/* 130void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
130 * Overrides for Emacs so that we follow Linus's tabbing style. 131{
131 * Emacs will notice this stuff at the end of the file and automatically 132 struct __jmp_buf_tag *jmpbuf = buffer;
132 * adjust the settings for this buffer only. This must remain at the end 133
133 * of the file. 134 UPT_SET(uml_regs, EIP, jmpbuf->__jmpbuf[JB_PC]);
134 * --------------------------------------------------------------------------- 135 UPT_SET(uml_regs, UESP, jmpbuf->__jmpbuf[JB_SP]);
135 * Local variables: 136 UPT_SET(uml_regs, EBP, jmpbuf->__jmpbuf[JB_BP]);
136 * c-file-style: "linux" 137}
137 * End:
138 */
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index 44438d15c3d6..4b638dfb52b0 100644
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -5,6 +5,7 @@
5 5
6#include <errno.h> 6#include <errno.h>
7#include <string.h> 7#include <string.h>
8#include <setjmp.h>
8#include "ptrace_user.h" 9#include "ptrace_user.h"
9#include "uml-config.h" 10#include "uml-config.h"
10#include "skas_ptregs.h" 11#include "skas_ptregs.h"
@@ -74,13 +75,11 @@ void get_safe_registers(unsigned long *regs)
74 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long)); 75 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
75} 76}
76 77
77/* 78void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
78 * Overrides for Emacs so that we follow Linus's tabbing style. 79{
79 * Emacs will notice this stuff at the end of the file and automatically 80 struct __jmp_buf_tag *jmpbuf = buffer;
80 * adjust the settings for this buffer only. This must remain at the end 81
81 * of the file. 82 UPT_SET(uml_regs, RIP, jmpbuf->__jmpbuf[JB_PC]);
82 * --------------------------------------------------------------------------- 83 UPT_SET(uml_regs, RSP, jmpbuf->__jmpbuf[JB_RSP]);
83 * Local variables: 84 UPT_SET(uml_regs, RBP, jmpbuf->__jmpbuf[JB_RBP]);
84 * c-file-style: "linux" 85}
85 * End:
86 */
diff --git a/arch/um/os-Linux/util/Makefile b/arch/um/os-Linux/util/Makefile
deleted file mode 100644
index 9778aed0c314..000000000000
--- a/arch/um/os-Linux/util/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
1hostprogs-y := mk_user_constants
2always := $(hostprogs-y)
3
4HOSTCFLAGS_mk_user_constants.o := -I$(objtree)/arch/um
diff --git a/arch/um/os-Linux/util/mk_user_constants.c b/arch/um/os-Linux/util/mk_user_constants.c
deleted file mode 100644
index 4838f30eecf0..000000000000
--- a/arch/um/os-Linux/util/mk_user_constants.c
+++ /dev/null
@@ -1,23 +0,0 @@
1#include <stdio.h>
2#include <user-offsets.h>
3
4int main(int argc, char **argv)
5{
6 printf("/*\n");
7 printf(" * Generated by mk_user_constants\n");
8 printf(" */\n");
9 printf("\n");
10 printf("#ifndef __UM_USER_CONSTANTS_H\n");
11 printf("#define __UM_USER_CONSTANTS_H\n");
12 printf("\n");
13 /* I'd like to use FRAME_SIZE from ptrace.h here, but that's wrong on
14 * x86_64 (216 vs 168 bytes). user_regs_struct is the correct size on
15 * both x86_64 and i386.
16 */
17 printf("#define UM_FRAME_SIZE %d\n", __UM_FRAME_SIZE);
18
19 printf("\n");
20 printf("#endif\n");
21
22 return(0);
23}
diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules
index 59a1291f477e..651d9d88b656 100644
--- a/arch/um/scripts/Makefile.rules
+++ b/arch/um/scripts/Makefile.rules
@@ -7,8 +7,8 @@ USER_SINGLE_OBJS := \
7USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) 7USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS))
8USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) 8USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
9 9
10$(USER_OBJS) : c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ 10$(USER_OBJS) $(USER_OBJS:.o=.i) $(USER_OBJS:.o=.s) $(USER_OBJS:.o=.lst): \
11 $(CFLAGS_$(notdir $@)) 11 c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(notdir $@))
12$(USER_OBJS): cmd_checksrc = 12$(USER_OBJS): cmd_checksrc =
13$(USER_OBJS): quiet_cmd_checksrc = 13$(USER_OBJS): quiet_cmd_checksrc =
14$(USER_OBJS): cmd_force_checksrc = 14$(USER_OBJS): cmd_force_checksrc =
diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index 4ca2a229da49..6dfeb70f6957 100644
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -18,6 +18,4 @@ module.c-dir = kernel
18 18
19$(obj)/stub_segv.o : _c_flags = $(call unprofile,$(CFLAGS)) 19$(obj)/stub_segv.o : _c_flags = $(call unprofile,$(CFLAGS))
20 20
21subdir- := util
22
23include arch/um/scripts/Makefile.unmap 21include arch/um/scripts/Makefile.unmap
diff --git a/arch/um/sys-i386/kernel-offsets.c b/arch/um/sys-i386/kernel-offsets.c
index a1070af2bcd8..35db85057506 100644
--- a/arch/um/sys-i386/kernel-offsets.c
+++ b/arch/um/sys-i386/kernel-offsets.c
@@ -18,9 +18,9 @@
18 18
19void foo(void) 19void foo(void)
20{ 20{
21 OFFSET(TASK_DEBUGREGS, task_struct, thread.arch.debugregs); 21 OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
22#ifdef CONFIG_MODE_TT 22#ifdef CONFIG_MODE_TT
23 OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); 23 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
24#endif 24#endif
25#include <common-offsets.h> 25#include <common-offsets.h>
26} 26}
diff --git a/arch/um/sys-i386/sysrq.c b/arch/um/sys-i386/sysrq.c
index e3706d15c4f5..d5244f070539 100644
--- a/arch/um/sys-i386/sysrq.c
+++ b/arch/um/sys-i386/sysrq.c
@@ -88,9 +88,7 @@ void show_trace(struct task_struct* task, unsigned long * stack)
88 task = current; 88 task = current;
89 89
90 if (task != current) { 90 if (task != current) {
91 //ebp = (unsigned long) KSTK_EBP(task); 91 ebp = (unsigned long) KSTK_EBP(task);
92 /* Which one? No actual difference - just coding style.*/
93 ebp = (unsigned long) PT_REGS_EBP(&task->thread.regs);
94 } else { 92 } else {
95 asm ("movl %%ebp, %0" : "=r" (ebp) : ); 93 asm ("movl %%ebp, %0" : "=r" (ebp) : );
96 } 94 }
@@ -99,15 +97,6 @@ void show_trace(struct task_struct* task, unsigned long * stack)
99 ((unsigned long)stack & (~(THREAD_SIZE - 1))); 97 ((unsigned long)stack & (~(THREAD_SIZE - 1)));
100 print_context_stack(context, stack, ebp); 98 print_context_stack(context, stack, ebp);
101 99
102 /*while (((long) stack & (THREAD_SIZE-1)) != 0) {
103 addr = *stack;
104 if (__kernel_text_address(addr)) {
105 printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
106 print_symbol(" %s", addr);
107 printk("\n");
108 }
109 stack++;
110 }*/
111 printk("\n"); 100 printk("\n");
112} 101}
113 102
diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c
index 3ceaabceb3d7..26b68675053d 100644
--- a/arch/um/sys-i386/user-offsets.c
+++ b/arch/um/sys-i386/user-offsets.c
@@ -7,47 +7,48 @@
7#define DEFINE(sym, val) \ 7#define DEFINE(sym, val) \
8 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 8 asm volatile("\n->" #sym " %0 " #val : : "i" (val))
9 9
10#define DEFINE_LONGS(sym, val) \
11 asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
12
10#define OFFSET(sym, str, mem) \ 13#define OFFSET(sym, str, mem) \
11 DEFINE(sym, offsetof(struct str, mem)); 14 DEFINE(sym, offsetof(struct str, mem));
12 15
13void foo(void) 16void foo(void)
14{ 17{
15 OFFSET(SC_IP, sigcontext, eip); 18 OFFSET(HOST_SC_IP, sigcontext, eip);
16 OFFSET(SC_SP, sigcontext, esp); 19 OFFSET(HOST_SC_SP, sigcontext, esp);
17 OFFSET(SC_FS, sigcontext, fs); 20 OFFSET(HOST_SC_FS, sigcontext, fs);
18 OFFSET(SC_GS, sigcontext, gs); 21 OFFSET(HOST_SC_GS, sigcontext, gs);
19 OFFSET(SC_DS, sigcontext, ds); 22 OFFSET(HOST_SC_DS, sigcontext, ds);
20 OFFSET(SC_ES, sigcontext, es); 23 OFFSET(HOST_SC_ES, sigcontext, es);
21 OFFSET(SC_SS, sigcontext, ss); 24 OFFSET(HOST_SC_SS, sigcontext, ss);
22 OFFSET(SC_CS, sigcontext, cs); 25 OFFSET(HOST_SC_CS, sigcontext, cs);
23 OFFSET(SC_EFLAGS, sigcontext, eflags); 26 OFFSET(HOST_SC_EFLAGS, sigcontext, eflags);
24 OFFSET(SC_EAX, sigcontext, eax); 27 OFFSET(HOST_SC_EAX, sigcontext, eax);
25 OFFSET(SC_EBX, sigcontext, ebx); 28 OFFSET(HOST_SC_EBX, sigcontext, ebx);
26 OFFSET(SC_ECX, sigcontext, ecx); 29 OFFSET(HOST_SC_ECX, sigcontext, ecx);
27 OFFSET(SC_EDX, sigcontext, edx); 30 OFFSET(HOST_SC_EDX, sigcontext, edx);
28 OFFSET(SC_EDI, sigcontext, edi); 31 OFFSET(HOST_SC_EDI, sigcontext, edi);
29 OFFSET(SC_ESI, sigcontext, esi); 32 OFFSET(HOST_SC_ESI, sigcontext, esi);
30 OFFSET(SC_EBP, sigcontext, ebp); 33 OFFSET(HOST_SC_EBP, sigcontext, ebp);
31 OFFSET(SC_TRAPNO, sigcontext, trapno); 34 OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
32 OFFSET(SC_ERR, sigcontext, err); 35 OFFSET(HOST_SC_ERR, sigcontext, err);
33 OFFSET(SC_CR2, sigcontext, cr2); 36 OFFSET(HOST_SC_CR2, sigcontext, cr2);
34 OFFSET(SC_FPSTATE, sigcontext, fpstate); 37 OFFSET(HOST_SC_FPSTATE, sigcontext, fpstate);
35 OFFSET(SC_SIGMASK, sigcontext, oldmask); 38 OFFSET(HOST_SC_SIGMASK, sigcontext, oldmask);
36 OFFSET(SC_FP_CW, _fpstate, cw); 39 OFFSET(HOST_SC_FP_CW, _fpstate, cw);
37 OFFSET(SC_FP_SW, _fpstate, sw); 40 OFFSET(HOST_SC_FP_SW, _fpstate, sw);
38 OFFSET(SC_FP_TAG, _fpstate, tag); 41 OFFSET(HOST_SC_FP_TAG, _fpstate, tag);
39 OFFSET(SC_FP_IPOFF, _fpstate, ipoff); 42 OFFSET(HOST_SC_FP_IPOFF, _fpstate, ipoff);
40 OFFSET(SC_FP_CSSEL, _fpstate, cssel); 43 OFFSET(HOST_SC_FP_CSSEL, _fpstate, cssel);
41 OFFSET(SC_FP_DATAOFF, _fpstate, dataoff); 44 OFFSET(HOST_SC_FP_DATAOFF, _fpstate, dataoff);
42 OFFSET(SC_FP_DATASEL, _fpstate, datasel); 45 OFFSET(HOST_SC_FP_DATASEL, _fpstate, datasel);
43 OFFSET(SC_FP_ST, _fpstate, _st); 46 OFFSET(HOST_SC_FP_ST, _fpstate, _st);
44 OFFSET(SC_FXSR_ENV, _fpstate, _fxsr_env); 47 OFFSET(HOST_SC_FXSR_ENV, _fpstate, _fxsr_env);
45 48
46 DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); 49 DEFINE(HOST_FRAME_SIZE, FRAME_SIZE);
47 DEFINE(HOST_FP_SIZE, 50 DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_i387_struct));
48 sizeof(struct user_i387_struct) / sizeof(unsigned long)); 51 DEFINE_LONGS(HOST_XFP_SIZE, sizeof(struct user_fxsr_struct));
49 DEFINE(HOST_XFP_SIZE,
50 sizeof(struct user_fxsr_struct) / sizeof(unsigned long));
51 52
52 DEFINE(HOST_IP, EIP); 53 DEFINE(HOST_IP, EIP);
53 DEFINE(HOST_SP, UESP); 54 DEFINE(HOST_SP, UESP);
@@ -65,5 +66,5 @@ void foo(void)
65 DEFINE(HOST_FS, FS); 66 DEFINE(HOST_FS, FS);
66 DEFINE(HOST_ES, ES); 67 DEFINE(HOST_ES, ES);
67 DEFINE(HOST_GS, GS); 68 DEFINE(HOST_GS, GS);
68 DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); 69 DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
69} 70}
diff --git a/arch/um/sys-i386/util/Makefile b/arch/um/sys-i386/util/Makefile
deleted file mode 100644
index bf61afd0b045..000000000000
--- a/arch/um/sys-i386/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1hostprogs-y := mk_sc mk_thread
2always := $(hostprogs-y)
3
4HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um
5HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um
diff --git a/arch/um/sys-i386/util/mk_sc.c b/arch/um/sys-i386/util/mk_sc.c
deleted file mode 100644
index 04c0d73433aa..000000000000
--- a/arch/um/sys-i386/util/mk_sc.c
+++ /dev/null
@@ -1,51 +0,0 @@
1#include <stdio.h>
2#include <user-offsets.h>
3
4#define SC_OFFSET(name, field) \
5 printf("#define " #name "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\
6 name)
7
8#define SC_FP_OFFSET(name, field) \
9 printf("#define " #name \
10 "(sc) *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\
11 name)
12
13#define SC_FP_OFFSET_PTR(name, field, type) \
14 printf("#define " #name \
15 "(sc) ((" type " *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\
16 name)
17
18int main(int argc, char **argv)
19{
20 SC_OFFSET(SC_IP, eip);
21 SC_OFFSET(SC_SP, esp);
22 SC_OFFSET(SC_FS, fs);
23 SC_OFFSET(SC_GS, gs);
24 SC_OFFSET(SC_DS, ds);
25 SC_OFFSET(SC_ES, es);
26 SC_OFFSET(SC_SS, ss);
27 SC_OFFSET(SC_CS, cs);
28 SC_OFFSET(SC_EFLAGS, eflags);
29 SC_OFFSET(SC_EAX, eax);
30 SC_OFFSET(SC_EBX, ebx);
31 SC_OFFSET(SC_ECX, ecx);
32 SC_OFFSET(SC_EDX, edx);
33 SC_OFFSET(SC_EDI, edi);
34 SC_OFFSET(SC_ESI, esi);
35 SC_OFFSET(SC_EBP, ebp);
36 SC_OFFSET(SC_TRAPNO, trapno);
37 SC_OFFSET(SC_ERR, err);
38 SC_OFFSET(SC_CR2, cr2);
39 SC_OFFSET(SC_FPSTATE, fpstate);
40 SC_OFFSET(SC_SIGMASK, oldmask);
41 SC_FP_OFFSET(SC_FP_CW, cw);
42 SC_FP_OFFSET(SC_FP_SW, sw);
43 SC_FP_OFFSET(SC_FP_TAG, tag);
44 SC_FP_OFFSET(SC_FP_IPOFF, ipoff);
45 SC_FP_OFFSET(SC_FP_CSSEL, cssel);
46 SC_FP_OFFSET(SC_FP_DATAOFF, dataoff);
47 SC_FP_OFFSET(SC_FP_DATASEL, datasel);
48 SC_FP_OFFSET_PTR(SC_FP_ST, _st, "struct _fpstate");
49 SC_FP_OFFSET_PTR(SC_FXSR_ENV, _fxsr_env, "void");
50 return(0);
51}
diff --git a/arch/um/sys-i386/util/mk_thread.c b/arch/um/sys-i386/util/mk_thread.c
deleted file mode 100644
index 7470d0dda67e..000000000000
--- a/arch/um/sys-i386/util/mk_thread.c
+++ /dev/null
@@ -1,22 +0,0 @@
1#include <stdio.h>
2#include <kernel-offsets.h>
3
4int main(int argc, char **argv)
5{
6 printf("/*\n");
7 printf(" * Generated by mk_thread\n");
8 printf(" */\n");
9 printf("\n");
10 printf("#ifndef __UM_THREAD_H\n");
11 printf("#define __UM_THREAD_H\n");
12 printf("\n");
13 printf("#define TASK_DEBUGREGS(task) ((unsigned long *) "
14 "&(((char *) (task))[%d]))\n", TASK_DEBUGREGS);
15#ifdef TASK_EXTERN_PID
16 printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n",
17 TASK_EXTERN_PID);
18#endif
19 printf("\n");
20 printf("#endif\n");
21 return(0);
22}
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index f0ab574d1e95..06c3633457a2 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -29,6 +29,4 @@ module.c-dir = kernel
29 29
30$(obj)/stub_segv.o: _c_flags = $(call unprofile,$(CFLAGS)) 30$(obj)/stub_segv.o: _c_flags = $(call unprofile,$(CFLAGS))
31 31
32subdir- := util
33
34include arch/um/scripts/Makefile.unmap 32include arch/um/scripts/Makefile.unmap
diff --git a/arch/um/sys-x86_64/kernel-offsets.c b/arch/um/sys-x86_64/kernel-offsets.c
index 998541eade41..bfcb104b846e 100644
--- a/arch/um/sys-x86_64/kernel-offsets.c
+++ b/arch/um/sys-x86_64/kernel-offsets.c
@@ -19,7 +19,7 @@
19void foo(void) 19void foo(void)
20{ 20{
21#ifdef CONFIG_MODE_TT 21#ifdef CONFIG_MODE_TT
22 OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); 22 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
23#endif 23#endif
24#include <common-offsets.h> 24#include <common-offsets.h>
25} 25}
diff --git a/arch/um/sys-x86_64/stub_segv.c b/arch/um/sys-x86_64/stub_segv.c
index 65a131b362b6..d1e53bdf2e85 100644
--- a/arch/um/sys-x86_64/stub_segv.c
+++ b/arch/um/sys-x86_64/stub_segv.c
@@ -10,6 +10,22 @@
10#include "uml-config.h" 10#include "uml-config.h"
11#include "sysdep/sigcontext.h" 11#include "sysdep/sigcontext.h"
12#include "sysdep/faultinfo.h" 12#include "sysdep/faultinfo.h"
13#include <stddef.h>
14
15/* Copied from sys-x86_64/signal.c - Can't find an equivalent definition
16 * in the libc headers anywhere.
17 */
18struct rt_sigframe
19{
20 char *pretcode;
21 struct ucontext uc;
22 struct siginfo info;
23};
24
25/* Copied here from <linux/kernel.h> - we're userspace. */
26#define container_of(ptr, type, member) ({ \
27 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
28 (type *)( (char *)__mptr - offsetof(type,member) );})
13 29
14void __attribute__ ((__section__ (".__syscall_stub"))) 30void __attribute__ ((__section__ (".__syscall_stub")))
15stub_segv_handler(int sig) 31stub_segv_handler(int sig)
@@ -17,16 +33,19 @@ stub_segv_handler(int sig)
17 struct ucontext *uc; 33 struct ucontext *uc;
18 34
19 __asm__("movq %%rdx, %0" : "=g" (uc) :); 35 __asm__("movq %%rdx, %0" : "=g" (uc) :);
20 GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA), 36 GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA),
21 &uc->uc_mcontext); 37 &uc->uc_mcontext);
22 38
23 __asm__("movq %0, %%rax ; syscall": : "g" (__NR_getpid)); 39 __asm__("movq %0, %%rax ; syscall": : "g" (__NR_getpid));
24 __asm__("movq %%rax, %%rdi ; movq %0, %%rax ; movq %1, %%rsi ;" 40 __asm__("movq %%rax, %%rdi ; movq %0, %%rax ; movq %1, %%rsi ;"
25 "syscall": : "g" (__NR_kill), "g" (SIGUSR1)); 41 "syscall": : "g" (__NR_kill), "g" (SIGUSR1) :
26 /* Two popqs to restore the stack to the state just before entering 42 "%rdi", "%rax", "%rsi");
27 * the handler, one pops the return address, the other pops the frame 43 /* sys_sigreturn expects that the stack pointer will be 8 bytes into
28 * pointer. 44 * the signal frame. So, we use the ucontext pointer, which we know
45 * already, to get the signal frame pointer, and add 8 to that.
29 */ 46 */
30 __asm__("popq %%rax ; popq %%rax ; movq %0, %%rax ; syscall" : : "g" 47 __asm__("movq %0, %%rsp": :
31 (__NR_rt_sigreturn)); 48 "g" ((unsigned long) container_of(uc, struct rt_sigframe,
49 uc) + 8));
50 __asm__("movq %0, %%rax ; syscall" : : "g" (__NR_rt_sigreturn));
32} 51}
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
index 513d17ceafd4..5a585bfbb8c2 100644
--- a/arch/um/sys-x86_64/user-offsets.c
+++ b/arch/um/sys-x86_64/user-offsets.c
@@ -16,71 +16,76 @@ typedef __u32 u32;
16#define DEFINE(sym, val) \ 16#define DEFINE(sym, val) \
17 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 17 asm volatile("\n->" #sym " %0 " #val : : "i" (val))
18 18
19#define DEFINE_LONGS(sym, val) \
20 asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
21
19#define OFFSET(sym, str, mem) \ 22#define OFFSET(sym, str, mem) \
20 DEFINE(sym, offsetof(struct str, mem)); 23 DEFINE(sym, offsetof(struct str, mem));
21 24
22void foo(void) 25void foo(void)
23{ 26{
24 OFFSET(SC_RBX, sigcontext, rbx); 27 OFFSET(HOST_SC_RBX, sigcontext, rbx);
25 OFFSET(SC_RCX, sigcontext, rcx); 28 OFFSET(HOST_SC_RCX, sigcontext, rcx);
26 OFFSET(SC_RDX, sigcontext, rdx); 29 OFFSET(HOST_SC_RDX, sigcontext, rdx);
27 OFFSET(SC_RSI, sigcontext, rsi); 30 OFFSET(HOST_SC_RSI, sigcontext, rsi);
28 OFFSET(SC_RDI, sigcontext, rdi); 31 OFFSET(HOST_SC_RDI, sigcontext, rdi);
29 OFFSET(SC_RBP, sigcontext, rbp); 32 OFFSET(HOST_SC_RBP, sigcontext, rbp);
30 OFFSET(SC_RAX, sigcontext, rax); 33 OFFSET(HOST_SC_RAX, sigcontext, rax);
31 OFFSET(SC_R8, sigcontext, r8); 34 OFFSET(HOST_SC_R8, sigcontext, r8);
32 OFFSET(SC_R9, sigcontext, r9); 35 OFFSET(HOST_SC_R9, sigcontext, r9);
33 OFFSET(SC_R10, sigcontext, r10); 36 OFFSET(HOST_SC_R10, sigcontext, r10);
34 OFFSET(SC_R11, sigcontext, r11); 37 OFFSET(HOST_SC_R11, sigcontext, r11);
35 OFFSET(SC_R12, sigcontext, r12); 38 OFFSET(HOST_SC_R12, sigcontext, r12);
36 OFFSET(SC_R13, sigcontext, r13); 39 OFFSET(HOST_SC_R13, sigcontext, r13);
37 OFFSET(SC_R14, sigcontext, r14); 40 OFFSET(HOST_SC_R14, sigcontext, r14);
38 OFFSET(SC_R15, sigcontext, r15); 41 OFFSET(HOST_SC_R15, sigcontext, r15);
39 OFFSET(SC_IP, sigcontext, rip); 42 OFFSET(HOST_SC_IP, sigcontext, rip);
40 OFFSET(SC_SP, sigcontext, rsp); 43 OFFSET(HOST_SC_SP, sigcontext, rsp);
41 OFFSET(SC_CR2, sigcontext, cr2); 44 OFFSET(HOST_SC_CR2, sigcontext, cr2);
42 OFFSET(SC_ERR, sigcontext, err); 45 OFFSET(HOST_SC_ERR, sigcontext, err);
43 OFFSET(SC_TRAPNO, sigcontext, trapno); 46 OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
44 OFFSET(SC_CS, sigcontext, cs); 47 OFFSET(HOST_SC_CS, sigcontext, cs);
45 OFFSET(SC_FS, sigcontext, fs); 48 OFFSET(HOST_SC_FS, sigcontext, fs);
46 OFFSET(SC_GS, sigcontext, gs); 49 OFFSET(HOST_SC_GS, sigcontext, gs);
47 OFFSET(SC_EFLAGS, sigcontext, eflags); 50 OFFSET(HOST_SC_EFLAGS, sigcontext, eflags);
48 OFFSET(SC_SIGMASK, sigcontext, oldmask); 51 OFFSET(HOST_SC_SIGMASK, sigcontext, oldmask);
49#if 0 52#if 0
50 OFFSET(SC_ORIG_RAX, sigcontext, orig_rax); 53 OFFSET(HOST_SC_ORIG_RAX, sigcontext, orig_rax);
51 OFFSET(SC_DS, sigcontext, ds); 54 OFFSET(HOST_SC_DS, sigcontext, ds);
52 OFFSET(SC_ES, sigcontext, es); 55 OFFSET(HOST_SC_ES, sigcontext, es);
53 OFFSET(SC_SS, sigcontext, ss); 56 OFFSET(HOST_SC_SS, sigcontext, ss);
54#endif 57#endif
55 58
56 DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); 59 DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE);
57 DEFINE(HOST_RBX, RBX); 60 DEFINE(HOST_FP_SIZE, 0);
58 DEFINE(HOST_RCX, RCX); 61 DEFINE(HOST_XFP_SIZE, 0);
59 DEFINE(HOST_RDI, RDI); 62 DEFINE_LONGS(HOST_RBX, RBX);
60 DEFINE(HOST_RSI, RSI); 63 DEFINE_LONGS(HOST_RCX, RCX);
61 DEFINE(HOST_RDX, RDX); 64 DEFINE_LONGS(HOST_RDI, RDI);
62 DEFINE(HOST_RBP, RBP); 65 DEFINE_LONGS(HOST_RSI, RSI);
63 DEFINE(HOST_RAX, RAX); 66 DEFINE_LONGS(HOST_RDX, RDX);
64 DEFINE(HOST_R8, R8); 67 DEFINE_LONGS(HOST_RBP, RBP);
65 DEFINE(HOST_R9, R9); 68 DEFINE_LONGS(HOST_RAX, RAX);
66 DEFINE(HOST_R10, R10); 69 DEFINE_LONGS(HOST_R8, R8);
67 DEFINE(HOST_R11, R11); 70 DEFINE_LONGS(HOST_R9, R9);
68 DEFINE(HOST_R12, R12); 71 DEFINE_LONGS(HOST_R10, R10);
69 DEFINE(HOST_R13, R13); 72 DEFINE_LONGS(HOST_R11, R11);
70 DEFINE(HOST_R14, R14); 73 DEFINE_LONGS(HOST_R12, R12);
71 DEFINE(HOST_R15, R15); 74 DEFINE_LONGS(HOST_R13, R13);
72 DEFINE(HOST_ORIG_RAX, ORIG_RAX); 75 DEFINE_LONGS(HOST_R14, R14);
73 DEFINE(HOST_CS, CS); 76 DEFINE_LONGS(HOST_R15, R15);
74 DEFINE(HOST_SS, SS); 77 DEFINE_LONGS(HOST_ORIG_RAX, ORIG_RAX);
75 DEFINE(HOST_EFLAGS, EFLAGS); 78 DEFINE_LONGS(HOST_CS, CS);
79 DEFINE_LONGS(HOST_SS, SS);
80 DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
76#if 0 81#if 0
77 DEFINE(HOST_FS, FS); 82 DEFINE_LONGS(HOST_FS, FS);
78 DEFINE(HOST_GS, GS); 83 DEFINE_LONGS(HOST_GS, GS);
79 DEFINE(HOST_DS, DS); 84 DEFINE_LONGS(HOST_DS, DS);
80 DEFINE(HOST_ES, ES); 85 DEFINE_LONGS(HOST_ES, ES);
81#endif 86#endif
82 87
83 DEFINE(HOST_IP, RIP); 88 DEFINE_LONGS(HOST_IP, RIP);
84 DEFINE(HOST_SP, RSP); 89 DEFINE_LONGS(HOST_SP, RSP);
85 DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); 90 DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
86} 91}
diff --git a/arch/um/sys-x86_64/util/Makefile b/arch/um/sys-x86_64/util/Makefile
deleted file mode 100644
index 75b052cfc206..000000000000
--- a/arch/um/sys-x86_64/util/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
1# Copyright 2003 - 2004 Pathscale, Inc
2# Released under the GPL
3
4hostprogs-y := mk_sc mk_thread
5always := $(hostprogs-y)
6
7HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um
8HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um
diff --git a/arch/um/sys-x86_64/util/mk_sc.c b/arch/um/sys-x86_64/util/mk_sc.c
deleted file mode 100644
index 7619bc377c1f..000000000000
--- a/arch/um/sys-x86_64/util/mk_sc.c
+++ /dev/null
@@ -1,47 +0,0 @@
1/* Copyright (C) 2003 - 2004 PathScale, Inc
2 * Released under the GPL
3 */
4
5#include <stdio.h>
6#include <user-offsets.h>
7
8#define SC_OFFSET(name) \
9 printf("#define " #name \
10 "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\
11 name)
12
13int main(int argc, char **argv)
14{
15 SC_OFFSET(SC_RBX);
16 SC_OFFSET(SC_RCX);
17 SC_OFFSET(SC_RDX);
18 SC_OFFSET(SC_RSI);
19 SC_OFFSET(SC_RDI);
20 SC_OFFSET(SC_RBP);
21 SC_OFFSET(SC_RAX);
22 SC_OFFSET(SC_R8);
23 SC_OFFSET(SC_R9);
24 SC_OFFSET(SC_R10);
25 SC_OFFSET(SC_R11);
26 SC_OFFSET(SC_R12);
27 SC_OFFSET(SC_R13);
28 SC_OFFSET(SC_R14);
29 SC_OFFSET(SC_R15);
30 SC_OFFSET(SC_IP);
31 SC_OFFSET(SC_SP);
32 SC_OFFSET(SC_CR2);
33 SC_OFFSET(SC_ERR);
34 SC_OFFSET(SC_TRAPNO);
35 SC_OFFSET(SC_CS);
36 SC_OFFSET(SC_FS);
37 SC_OFFSET(SC_GS);
38 SC_OFFSET(SC_EFLAGS);
39 SC_OFFSET(SC_SIGMASK);
40#if 0
41 SC_OFFSET(SC_ORIG_RAX);
42 SC_OFFSET(SC_DS);
43 SC_OFFSET(SC_ES);
44 SC_OFFSET(SC_SS);
45#endif
46 return(0);
47}
diff --git a/arch/um/sys-x86_64/util/mk_thread.c b/arch/um/sys-x86_64/util/mk_thread.c
deleted file mode 100644
index 15517396e9cf..000000000000
--- a/arch/um/sys-x86_64/util/mk_thread.c
+++ /dev/null
@@ -1,20 +0,0 @@
1#include <stdio.h>
2#include <kernel-offsets.h>
3
4int main(int argc, char **argv)
5{
6 printf("/*\n");
7 printf(" * Generated by mk_thread\n");
8 printf(" */\n");
9 printf("\n");
10 printf("#ifndef __UM_THREAD_H\n");
11 printf("#define __UM_THREAD_H\n");
12 printf("\n");
13#ifdef TASK_EXTERN_PID
14 printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n",
15 TASK_EXTERN_PID);
16#endif
17 printf("\n");
18 printf("#endif\n");
19 return(0);
20}
diff --git a/arch/um/util/Makefile b/arch/um/util/Makefile
deleted file mode 100644
index 4c7551c28033..000000000000
--- a/arch/um/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1hostprogs-y := mk_task mk_constants
2always := $(hostprogs-y)
3
4HOSTCFLAGS_mk_task.o := -I$(objtree)/arch/um
5HOSTCFLAGS_mk_constants.o := -I$(objtree)/arch/um
diff --git a/arch/um/util/mk_constants.c b/arch/um/util/mk_constants.c
deleted file mode 100644
index ab217becc36a..000000000000
--- a/arch/um/util/mk_constants.c
+++ /dev/null
@@ -1,32 +0,0 @@
1#include <stdio.h>
2#include <kernel-offsets.h>
3
4#define SHOW_INT(sym) printf("#define %s %d\n", #sym, sym)
5#define SHOW_STR(sym) printf("#define %s %s\n", #sym, sym)
6
7int main(int argc, char **argv)
8{
9 printf("/*\n");
10 printf(" * Generated by mk_constants\n");
11 printf(" */\n");
12 printf("\n");
13 printf("#ifndef __UM_CONSTANTS_H\n");
14 printf("#define __UM_CONSTANTS_H\n");
15 printf("\n");
16
17 SHOW_INT(UM_KERN_PAGE_SIZE);
18
19 SHOW_STR(UM_KERN_EMERG);
20 SHOW_STR(UM_KERN_ALERT);
21 SHOW_STR(UM_KERN_CRIT);
22 SHOW_STR(UM_KERN_ERR);
23 SHOW_STR(UM_KERN_WARNING);
24 SHOW_STR(UM_KERN_NOTICE);
25 SHOW_STR(UM_KERN_INFO);
26 SHOW_STR(UM_KERN_DEBUG);
27
28 SHOW_INT(UM_NSEC_PER_SEC);
29 printf("\n");
30 printf("#endif\n");
31 return(0);
32}
diff --git a/arch/um/util/mk_task.c b/arch/um/util/mk_task.c
deleted file mode 100644
index 36c9606505e2..000000000000
--- a/arch/um/util/mk_task.c
+++ /dev/null
@@ -1,30 +0,0 @@
1#include <stdio.h>
2#include <kernel-offsets.h>
3
4void print_ptr(char *name, char *type, int offset)
5{
6 printf("#define %s(task) ((%s *) &(((char *) (task))[%d]))\n", name, type,
7 offset);
8}
9
10void print(char *name, char *type, int offset)
11{
12 printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type,
13 offset);
14}
15
16int main(int argc, char **argv)
17{
18 printf("/*\n");
19 printf(" * Generated by mk_task\n");
20 printf(" */\n");
21 printf("\n");
22 printf("#ifndef __TASK_H\n");
23 printf("#define __TASK_H\n");
24 printf("\n");
25 print_ptr("TASK_REGS", "union uml_pt_regs", TASK_REGS);
26 print("TASK_PID", "int", TASK_PID);
27 printf("\n");
28 printf("#endif\n");
29 return(0);
30}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-24 16:06:27 -0500