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-rw-r--r--arch/um/sys-x86_64/Makefile37
-rw-r--r--arch/um/sys-x86_64/bugs.c122
-rw-r--r--arch/um/sys-x86_64/delay.c26
-rw-r--r--arch/um/sys-x86_64/fault.c23
-rw-r--r--arch/um/sys-x86_64/mem.c25
-rw-r--r--arch/um/sys-x86_64/ptrace.c138
-rw-r--r--arch/um/sys-x86_64/ptrace_user.c51
-rw-r--r--arch/um/sys-x86_64/sigcontext.c39
-rw-r--r--arch/um/sys-x86_64/signal.c276
-rw-r--r--arch/um/sys-x86_64/syscalls.c186
-rw-r--r--arch/um/sys-x86_64/sysrq.c49
-rw-r--r--arch/um/sys-x86_64/util/Makefile10
-rw-r--r--arch/um/sys-x86_64/util/mk_sc.c58
-rw-r--r--arch/um/sys-x86_64/util/mk_thread_kern.c21
-rw-r--r--arch/um/sys-x86_64/util/mk_thread_user.c30
15 files changed, 1091 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
new file mode 100644
index 000000000000..2129e3143559
--- /dev/null
+++ b/arch/um/sys-x86_64/Makefile
@@ -0,0 +1,37 @@
1#
2# Copyright 2003 PathScale, Inc.
3#
4# Licensed under the GPL
5#
6
7lib-y = bitops.o bugs.o csum-partial.o delay.o fault.o mem.o memcpy.o \
8 ptrace.o ptrace_user.o semaphore.o sigcontext.o signal.o \
9 syscalls.o sysrq.o thunk.o
10
11USER_OBJS := ptrace_user.o sigcontext.o
12
13include arch/um/scripts/Makefile.rules
14
15SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \
16 semaphore.c thunk.S
17
18# this needs to be before the foreach, because clean-files does not accept
19# complete paths like $(src)/$f.
20clean-files := $(SYMLINKS)
21
22targets += $(SYMLINKS)
23
24SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$f)
25
26bitops.c-dir = lib
27csum-copy.S-dir = lib
28csum-partial.c-dir = lib
29csum-wrappers.c-dir = lib
30memcpy.S-dir = lib
31semaphore.c-dir = kernel
32thunk.S-dir = lib
33
34$(SYMLINKS): FORCE
35 $(call if_changed,make_link)
36
37CFLAGS_csum-partial.o := -Dcsum_partial=arch_csum_partial
diff --git a/arch/um/sys-x86_64/bugs.c b/arch/um/sys-x86_64/bugs.c
new file mode 100644
index 000000000000..fdce7ea98ca7
--- /dev/null
+++ b/arch/um/sys-x86_64/bugs.c
@@ -0,0 +1,122 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include "linux/sched.h"
8#include "linux/errno.h"
9#include "asm/system.h"
10#include "asm/pda.h"
11#include "sysdep/ptrace.h"
12#include "os.h"
13
14void arch_init_thread(void)
15{
16}
17
18void arch_check_bugs(void)
19{
20}
21
22int arch_handle_signal(int sig, union uml_pt_regs *regs)
23{
24 return(0);
25}
26
27#define MAXTOKEN 64
28
29/* Set during early boot */
30int host_has_cmov = 1;
31int host_has_xmm = 0;
32
33static char token(int fd, char *buf, int len, char stop)
34{
35 int n;
36 char *ptr, *end, c;
37
38 ptr = buf;
39 end = &buf[len];
40 do {
41 n = os_read_file(fd, ptr, sizeof(*ptr));
42 c = *ptr++;
43 if(n != sizeof(*ptr)){
44 if(n == 0) return(0);
45 printk("Reading /proc/cpuinfo failed, err = %d\n", -n);
46 if(n < 0)
47 return(n);
48 else
49 return(-EIO);
50 }
51 } while((c != '\n') && (c != stop) && (ptr < end));
52
53 if(ptr == end){
54 printk("Failed to find '%c' in /proc/cpuinfo\n", stop);
55 return(-1);
56 }
57 *(ptr - 1) = '\0';
58 return(c);
59}
60
61static int find_cpuinfo_line(int fd, char *key, char *scratch, int len)
62{
63 int n;
64 char c;
65
66 scratch[len - 1] = '\0';
67 while(1){
68 c = token(fd, scratch, len - 1, ':');
69 if(c <= 0)
70 return(0);
71 else if(c != ':'){
72 printk("Failed to find ':' in /proc/cpuinfo\n");
73 return(0);
74 }
75
76 if(!strncmp(scratch, key, strlen(key)))
77 return(1);
78
79 do {
80 n = os_read_file(fd, &c, sizeof(c));
81 if(n != sizeof(c)){
82 printk("Failed to find newline in "
83 "/proc/cpuinfo, err = %d\n", -n);
84 return(0);
85 }
86 } while(c != '\n');
87 }
88 return(0);
89}
90
91int cpu_feature(char *what, char *buf, int len)
92{
93 int fd, ret = 0;
94
95 fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
96 if(fd < 0){
97 printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd);
98 return(0);
99 }
100
101 if(!find_cpuinfo_line(fd, what, buf, len)){
102 printk("Couldn't find '%s' line in /proc/cpuinfo\n", what);
103 goto out_close;
104 }
105
106 token(fd, buf, len, '\n');
107 ret = 1;
108
109 out_close:
110 os_close_file(fd);
111 return(ret);
112}
113
114/* Overrides for Emacs so that we follow Linus's tabbing style.
115 * Emacs will notice this stuff at the end of the file and automatically
116 * adjust the settings for this buffer only. This must remain at the end
117 * of the file.
118 * ---------------------------------------------------------------------------
119 * Local variables:
120 * c-file-style: "linux"
121 * End:
122 */
diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c
new file mode 100644
index 000000000000..f3b5187942b4
--- /dev/null
+++ b/arch/um/sys-x86_64/delay.c
@@ -0,0 +1,26 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 * Copied from arch/x86_64
4 *
5 * Licensed under the GPL
6 */
7
8#include "asm/processor.h"
9
10void __delay(unsigned long loops)
11{
12 unsigned long i;
13
14 for(i = 0; i < loops; i++) ;
15}
16
17/*
18 * Overrides for Emacs so that we follow Linus's tabbing style.
19 * Emacs will notice this stuff at the end of the file and automatically
20 * adjust the settings for this buffer only. This must remain at the end
21 * of the file.
22 * ---------------------------------------------------------------------------
23 * Local variables:
24 * c-file-style: "linux"
25 * End:
26 */
diff --git a/arch/um/sys-x86_64/fault.c b/arch/um/sys-x86_64/fault.c
new file mode 100644
index 000000000000..cee1513c5c31
--- /dev/null
+++ b/arch/um/sys-x86_64/fault.c
@@ -0,0 +1,23 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include "user.h"
8
9int arch_fixup(unsigned long address, void *sc_ptr)
10{
11 /* XXX search_exception_tables() */
12 return(0);
13}
14
15/* Overrides for Emacs so that we follow Linus's tabbing style.
16 * Emacs will notice this stuff at the end of the file and automatically
17 * adjust the settings for this buffer only. This must remain at the end
18 * of the file.
19 * ---------------------------------------------------------------------------
20 * Local variables:
21 * c-file-style: "linux"
22 * End:
23 */
diff --git a/arch/um/sys-x86_64/mem.c b/arch/um/sys-x86_64/mem.c
new file mode 100644
index 000000000000..3f59a0a4f156
--- /dev/null
+++ b/arch/um/sys-x86_64/mem.c
@@ -0,0 +1,25 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include "linux/mm.h"
8#include "asm/page.h"
9#include "asm/mman.h"
10
11unsigned long vm_stack_flags = __VM_STACK_FLAGS;
12unsigned long vm_stack_flags32 = __VM_STACK_FLAGS;
13unsigned long vm_data_default_flags = __VM_DATA_DEFAULT_FLAGS;
14unsigned long vm_data_default_flags32 = __VM_DATA_DEFAULT_FLAGS;
15unsigned long vm_force_exec32 = PROT_EXEC;
16
17/* Overrides for Emacs so that we follow Linus's tabbing style.
18 * Emacs will notice this stuff at the end of the file and automatically
19 * adjust the settings for this buffer only. This must remain at the end
20 * of the file.
21 * ---------------------------------------------------------------------------
22 * Local variables:
23 * c-file-style: "linux"
24 * End:
25 */
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
new file mode 100644
index 000000000000..8c146b2a1e00
--- /dev/null
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -0,0 +1,138 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#define __FRAME_OFFSETS
8#include "asm/ptrace.h"
9#include "linux/sched.h"
10#include "linux/errno.h"
11#include "asm/elf.h"
12
13/* XXX x86_64 */
14unsigned long not_ss;
15unsigned long not_ds;
16unsigned long not_es;
17
18#define SC_SS(r) (not_ss)
19#define SC_DS(r) (not_ds)
20#define SC_ES(r) (not_es)
21
22/* determines which flags the user has access to. */
23/* 1 = access 0 = no access */
24#define FLAG_MASK 0x44dd5UL
25
26int putreg(struct task_struct *child, int regno, unsigned long value)
27{
28 unsigned long tmp;
29
30#ifdef TIF_IA32
31 /* Some code in the 64bit emulation may not be 64bit clean.
32 Don't take any chances. */
33 if (test_tsk_thread_flag(child, TIF_IA32))
34 value &= 0xffffffff;
35#endif
36 switch (regno){
37 case FS:
38 case GS:
39 case DS:
40 case ES:
41 case SS:
42 case CS:
43 if (value && (value & 3) != 3)
44 return -EIO;
45 value &= 0xffff;
46 break;
47
48 case FS_BASE:
49 case GS_BASE:
50 if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
51 return -EIO;
52 break;
53
54 case EFLAGS:
55 value &= FLAG_MASK;
56 tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK;
57 value |= tmp;
58 break;
59 }
60
61 PT_REGS_SET(&child->thread.regs, regno, value);
62 return 0;
63}
64
65unsigned long getreg(struct task_struct *child, int regno)
66{
67 unsigned long retval = ~0UL;
68 switch (regno) {
69 case FS:
70 case GS:
71 case DS:
72 case ES:
73 case SS:
74 case CS:
75 retval = 0xffff;
76 /* fall through */
77 default:
78 retval &= PT_REG(&child->thread.regs, regno);
79#ifdef TIF_IA32
80 if (test_tsk_thread_flag(child, TIF_IA32))
81 retval &= 0xffffffff;
82#endif
83 }
84 return retval;
85}
86
87void arch_switch(void)
88{
89/* XXX
90 printk("arch_switch\n");
91*/
92}
93
94int is_syscall(unsigned long addr)
95{
96 panic("is_syscall");
97}
98
99int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
100{
101 panic("dump_fpu");
102 return(1);
103}
104
105int get_fpregs(unsigned long buf, struct task_struct *child)
106{
107 panic("get_fpregs");
108 return(0);
109}
110
111int set_fpregs(unsigned long buf, struct task_struct *child)
112{
113 panic("set_fpregs");
114 return(0);
115}
116
117int get_fpxregs(unsigned long buf, struct task_struct *tsk)
118{
119 panic("get_fpxregs");
120 return(0);
121}
122
123int set_fpxregs(unsigned long buf, struct task_struct *tsk)
124{
125 panic("set_fxpregs");
126 return(0);
127}
128
129/*
130 * Overrides for Emacs so that we follow Linus's tabbing style.
131 * Emacs will notice this stuff at the end of the file and automatically
132 * adjust the settings for this buffer only. This must remain at the end
133 * of the file.
134 * ---------------------------------------------------------------------------
135 * Local variables:
136 * c-file-style: "linux"
137 * End:
138 */
diff --git a/arch/um/sys-x86_64/ptrace_user.c b/arch/um/sys-x86_64/ptrace_user.c
new file mode 100644
index 000000000000..12e404c6fa46
--- /dev/null
+++ b/arch/um/sys-x86_64/ptrace_user.c
@@ -0,0 +1,51 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include <stddef.h>
8#include <errno.h>
9#include "ptrace_user.h"
10#include "user.h"
11#include "kern_constants.h"
12
13int ptrace_getregs(long pid, unsigned long *regs_out)
14{
15 if(ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
16 return(-errno);
17 return(0);
18}
19
20int ptrace_setregs(long pid, unsigned long *regs)
21{
22 if(ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
23 return(-errno);
24 return(0);
25}
26
27void ptrace_pokeuser(unsigned long addr, unsigned long data)
28{
29 panic("ptrace_pokeuser");
30}
31
32#define DS 184
33#define ES 192
34#define __USER_DS 0x2b
35
36void arch_enter_kernel(void *task, int pid)
37{
38}
39
40void arch_leave_kernel(void *task, int pid)
41{
42#ifdef UM_USER_CS
43 if(ptrace(PTRACE_POKEUSR, pid, CS, UM_USER_CS) < 0)
44 printk("POKEUSR CS failed");
45#endif
46
47 if(ptrace(PTRACE_POKEUSR, pid, DS, __USER_DS) < 0)
48 printk("POKEUSR DS failed");
49 if(ptrace(PTRACE_POKEUSR, pid, ES, __USER_DS) < 0)
50 printk("POKEUSR ES failed");
51}
diff --git a/arch/um/sys-x86_64/sigcontext.c b/arch/um/sys-x86_64/sigcontext.c
new file mode 100644
index 000000000000..c88e64def6f2
--- /dev/null
+++ b/arch/um/sys-x86_64/sigcontext.c
@@ -0,0 +1,39 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include <stdio.h>
8#include <string.h>
9#include <signal.h>
10#include "user.h"
11
12void sc_to_sc(void *to_ptr, void *from_ptr)
13{
14 struct sigcontext *to = to_ptr, *from = from_ptr;
15 int size = sizeof(*to); /* + sizeof(struct _fpstate); */
16
17 memcpy(to, from, size);
18 if(from->fpstate != NULL)
19 to->fpstate = (struct _fpstate *) (to + 1);
20
21 to->fpstate = NULL;
22}
23
24unsigned long *sc_sigmask(void *sc_ptr)
25{
26 struct sigcontext *sc = sc_ptr;
27
28 return(&sc->oldmask);
29}
30
31/* Overrides for Emacs so that we follow Linus's tabbing style.
32 * Emacs will notice this stuff at the end of the file and automatically
33 * adjust the settings for this buffer only. This must remain at the end
34 * of the file.
35 * ---------------------------------------------------------------------------
36 * Local variables:
37 * c-file-style: "linux"
38 * End:
39 */
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
new file mode 100644
index 000000000000..5bc5a0d796e5
--- /dev/null
+++ b/arch/um/sys-x86_64/signal.c
@@ -0,0 +1,276 @@
1/*
2 * Copyright (C) 2003 PathScale, Inc.
3 * Licensed under the GPL
4 */
5
6#include "linux/stddef.h"
7#include "linux/errno.h"
8#include "linux/personality.h"
9#include "linux/ptrace.h"
10#include "asm/current.h"
11#include "asm/uaccess.h"
12#include "asm/sigcontext.h"
13#include "asm/ptrace.h"
14#include "asm/arch/ucontext.h"
15#include "choose-mode.h"
16#include "sysdep/ptrace.h"
17#include "frame_kern.h"
18
19#ifdef CONFIG_MODE_SKAS
20
21#include "skas.h"
22
23static int copy_sc_from_user_skas(struct pt_regs *regs,
24 struct sigcontext *from)
25{
26 int err = 0;
27
28#define GETREG(regs, regno, sc, regname) \
29 __get_user((regs)->regs.skas.regs[(regno) / sizeof(unsigned long)], \
30 &(sc)->regname)
31
32 err |= GETREG(regs, R8, from, r8);
33 err |= GETREG(regs, R9, from, r9);
34 err |= GETREG(regs, R10, from, r10);
35 err |= GETREG(regs, R11, from, r11);
36 err |= GETREG(regs, R12, from, r12);
37 err |= GETREG(regs, R13, from, r13);
38 err |= GETREG(regs, R14, from, r14);
39 err |= GETREG(regs, R15, from, r15);
40 err |= GETREG(regs, RDI, from, rdi);
41 err |= GETREG(regs, RSI, from, rsi);
42 err |= GETREG(regs, RBP, from, rbp);
43 err |= GETREG(regs, RBX, from, rbx);
44 err |= GETREG(regs, RDX, from, rdx);
45 err |= GETREG(regs, RAX, from, rax);
46 err |= GETREG(regs, RCX, from, rcx);
47 err |= GETREG(regs, RSP, from, rsp);
48 err |= GETREG(regs, RIP, from, rip);
49 err |= GETREG(regs, EFLAGS, from, eflags);
50 err |= GETREG(regs, CS, from, cs);
51
52#undef GETREG
53
54 return(err);
55}
56
57int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
58 struct pt_regs *regs, unsigned long mask)
59{
60 unsigned long eflags;
61 int err = 0;
62
63 err |= __put_user(0, &to->gs);
64 err |= __put_user(0, &to->fs);
65
66#define PUTREG(regs, regno, sc, regname) \
67 __put_user((regs)->regs.skas.regs[(regno) / sizeof(unsigned long)], \
68 &(sc)->regname)
69
70 err |= PUTREG(regs, RDI, to, rdi);
71 err |= PUTREG(regs, RSI, to, rsi);
72 err |= PUTREG(regs, RBP, to, rbp);
73 err |= PUTREG(regs, RSP, to, rsp);
74 err |= PUTREG(regs, RBX, to, rbx);
75 err |= PUTREG(regs, RDX, to, rdx);
76 err |= PUTREG(regs, RCX, to, rcx);
77 err |= PUTREG(regs, RAX, to, rax);
78 err |= PUTREG(regs, R8, to, r8);
79 err |= PUTREG(regs, R9, to, r9);
80 err |= PUTREG(regs, R10, to, r10);
81 err |= PUTREG(regs, R11, to, r11);
82 err |= PUTREG(regs, R12, to, r12);
83 err |= PUTREG(regs, R13, to, r13);
84 err |= PUTREG(regs, R14, to, r14);
85 err |= PUTREG(regs, R15, to, r15);
86 err |= PUTREG(regs, CS, to, cs); /* XXX x86_64 doesn't do this */
87 err |= __put_user(current->thread.err, &to->err);
88 err |= __put_user(current->thread.trap_no, &to->trapno);
89 err |= PUTREG(regs, RIP, to, rip);
90 err |= PUTREG(regs, EFLAGS, to, eflags);
91#undef PUTREG
92
93 err |= __put_user(mask, &to->oldmask);
94 err |= __put_user(current->thread.cr2, &to->cr2);
95
96 return(err);
97}
98
99#endif
100
101#ifdef CONFIG_MODE_TT
102int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
103 int fpsize)
104{
105 struct _fpstate *to_fp, *from_fp;
106 unsigned long sigs;
107 int err;
108
109 to_fp = to->fpstate;
110 from_fp = from->fpstate;
111 sigs = to->oldmask;
112 err = copy_from_user(to, from, sizeof(*to));
113 to->oldmask = sigs;
114 return(err);
115}
116
117int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp,
118 struct sigcontext *from, int fpsize)
119{
120 struct _fpstate *to_fp, *from_fp;
121 int err;
122
123 to_fp = (fp ? fp : (struct _fpstate *) (to + 1));
124 from_fp = from->fpstate;
125 err = copy_to_user(to, from, sizeof(*to));
126 return(err);
127}
128
129#endif
130
131static int copy_sc_from_user(struct pt_regs *to, void __user *from)
132{
133 int ret;
134
135 ret = CHOOSE_MODE(copy_sc_from_user_tt(UPT_SC(&to->regs), from,
136 sizeof(struct _fpstate)),
137 copy_sc_from_user_skas(to, from));
138 return(ret);
139}
140
141static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp,
142 struct pt_regs *from, unsigned long mask)
143{
144 return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs),
145 sizeof(*fp)),
146 copy_sc_to_user_skas(to, fp, from, mask)));
147}
148
149struct rt_sigframe
150{
151 char *pretcode;
152 struct ucontext uc;
153 struct siginfo info;
154};
155
156#define round_down(m, n) (((m) / (n)) * (n))
157
158int setup_signal_stack_si(unsigned long stack_top, int sig,
159 struct k_sigaction *ka, struct pt_regs * regs,
160 siginfo_t *info, sigset_t *set)
161{
162 struct rt_sigframe __user *frame;
163 struct _fpstate __user *fp = NULL;
164 int err = 0;
165 struct task_struct *me = current;
166
167 frame = (struct rt_sigframe __user *)
168 round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
169 frame -= 128;
170
171 if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
172 goto out;
173
174#if 0 /* XXX */
175 if (save_i387(fp) < 0)
176 err |= -1;
177#endif
178 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
179 goto out;
180
181 if (ka->sa.sa_flags & SA_SIGINFO) {
182 err |= copy_siginfo_to_user(&frame->info, info);
183 if (err)
184 goto out;
185 }
186
187 /* Create the ucontext. */
188 err |= __put_user(0, &frame->uc.uc_flags);
189 err |= __put_user(0, &frame->uc.uc_link);
190 err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
191 err |= __put_user(sas_ss_flags(PT_REGS_SP(regs)),
192 &frame->uc.uc_stack.ss_flags);
193 err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
194 err |= copy_sc_to_user(&frame->uc.uc_mcontext, fp, regs, set->sig[0]);
195 err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
196 if (sizeof(*set) == 16) {
197 __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
198 __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
199 }
200 else
201 err |= __copy_to_user(&frame->uc.uc_sigmask, set,
202 sizeof(*set));
203
204 /* Set up to return from userspace. If provided, use a stub
205 already in userspace. */
206 /* x86-64 should always use SA_RESTORER. */
207 if (ka->sa.sa_flags & SA_RESTORER)
208 err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
209 else
210 /* could use a vstub here */
211 goto out;
212
213 if (err)
214 goto out;
215
216 /* Set up registers for signal handler */
217 {
218 struct exec_domain *ed = current_thread_info()->exec_domain;
219 if (unlikely(ed && ed->signal_invmap && sig < 32))
220 sig = ed->signal_invmap[sig];
221 }
222
223 PT_REGS_RDI(regs) = sig;
224 /* In case the signal handler was declared without prototypes */
225 PT_REGS_RAX(regs) = 0;
226
227 /* This also works for non SA_SIGINFO handlers because they expect the
228 next argument after the signal number on the stack. */
229 PT_REGS_RSI(regs) = (unsigned long) &frame->info;
230 PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
231 PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
232
233 PT_REGS_RSP(regs) = (unsigned long) frame;
234 out:
235 return(err);
236}
237
238long sys_rt_sigreturn(struct pt_regs *regs)
239{
240 unsigned long sp = PT_REGS_SP(&current->thread.regs);
241 struct rt_sigframe __user *frame =
242 (struct rt_sigframe __user *)(sp - 8);
243 struct ucontext __user *uc = &frame->uc;
244 sigset_t set;
245
246 if(copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
247 goto segfault;
248
249 sigdelsetmask(&set, ~_BLOCKABLE);
250
251 spin_lock_irq(&current->sighand->siglock);
252 current->blocked = set;
253 recalc_sigpending();
254 spin_unlock_irq(&current->sighand->siglock);
255
256 if(copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext))
257 goto segfault;
258
259 /* Avoid ERESTART handling */
260 PT_REGS_SYSCALL_NR(&current->thread.regs) = -1;
261 return(PT_REGS_SYSCALL_RET(&current->thread.regs));
262
263 segfault:
264 force_sig(SIGSEGV, current);
265 return 0;
266}
267/*
268 * Overrides for Emacs so that we follow Linus's tabbing style.
269 * Emacs will notice this stuff at the end of the file and automatically
270 * adjust the settings for this buffer only. This must remain at the end
271 * of the file.
272 * ---------------------------------------------------------------------------
273 * Local variables:
274 * c-file-style: "linux"
275 * End:
276 */
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
new file mode 100644
index 000000000000..68205a03364c
--- /dev/null
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -0,0 +1,186 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include "linux/linkage.h"
8#include "linux/slab.h"
9#include "linux/shm.h"
10#include "asm/uaccess.h"
11#define __FRAME_OFFSETS
12#include "asm/ptrace.h"
13#include "asm/unistd.h"
14#include "asm/prctl.h" /* XXX This should get the constants from libc */
15#include "choose-mode.h"
16
17asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
18{
19 unsigned long raddr;
20
21 return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr;
22}
23
24#ifdef CONFIG_MODE_TT
25extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
26
27long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
28{
29 /* XXX This should check VERIFY_WRITE depending on func, check this
30 * in i386 as well.
31 */
32 if (!access_ok(VERIFY_READ, ptr, bytecount))
33 return -EFAULT;
34 return(modify_ldt(func, ptr, bytecount));
35}
36#endif
37
38#ifdef CONFIG_MODE_SKAS
39extern int userspace_pid[];
40
41long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
42{
43 struct ptrace_ldt ldt;
44 void *buf;
45 int res, n;
46
47 buf = kmalloc(bytecount, GFP_KERNEL);
48 if(buf == NULL)
49 return(-ENOMEM);
50
51 res = 0;
52
53 switch(func){
54 case 1:
55 case 0x11:
56 res = copy_from_user(buf, ptr, bytecount);
57 break;
58 }
59
60 if(res != 0){
61 res = -EFAULT;
62 goto out;
63 }
64
65 ldt = ((struct ptrace_ldt) { .func = func,
66 .ptr = buf,
67 .bytecount = bytecount });
68#warning Need to look up userspace_pid by cpu
69 res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
70 if(res < 0)
71 goto out;
72
73 switch(func){
74 case 0:
75 case 2:
76 n = res;
77 res = copy_to_user(ptr, buf, n);
78 if(res != 0)
79 res = -EFAULT;
80 else
81 res = n;
82 break;
83 }
84
85 out:
86 kfree(buf);
87 return(res);
88}
89#endif
90
91long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
92{
93 return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
94 ptr, bytecount));
95}
96
97#ifdef CONFIG_MODE_TT
98extern long arch_prctl(int code, unsigned long addr);
99
100static long arch_prctl_tt(int code, unsigned long addr)
101{
102 unsigned long tmp;
103 long ret;
104
105 switch(code){
106 case ARCH_SET_GS:
107 case ARCH_SET_FS:
108 ret = arch_prctl(code, addr);
109 break;
110 case ARCH_GET_FS:
111 case ARCH_GET_GS:
112 ret = arch_prctl(code, (unsigned long) &tmp);
113 if(!ret)
114 ret = put_user(tmp, &addr);
115 break;
116 default:
117 ret = -EINVAL;
118 break;
119 }
120
121 return(ret);
122}
123#endif
124
125#ifdef CONFIG_MODE_SKAS
126
127static long arch_prctl_skas(int code, unsigned long addr)
128{
129 long ret = 0;
130
131 switch(code){
132 case ARCH_SET_GS:
133 current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
134 break;
135 case ARCH_SET_FS:
136 current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
137 break;
138 case ARCH_GET_FS:
139 ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
140 break;
141 case ARCH_GET_GS:
142 ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
143long)], &addr);
144 break;
145 default:
146 ret = -EINVAL;
147 break;
148 }
149
150 return(ret);
151}
152#endif
153
154long sys_arch_prctl(int code, unsigned long addr)
155{
156 return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
157}
158
159long sys_clone(unsigned long clone_flags, unsigned long newsp,
160 void __user *parent_tid, void __user *child_tid)
161{
162 long ret;
163
164 /* XXX: normal arch do here this pass, and also pass the regs to
165 * do_fork, instead of NULL. Currently the arch-independent code
166 * ignores these values, while the UML code (actually it's
167 * copy_thread) does the right thing. But this should change,
168 probably. */
169 /*if (!newsp)
170 newsp = UPT_SP(current->thread.regs);*/
171 current->thread.forking = 1;
172 ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
173 current->thread.forking = 0;
174 return(ret);
175}
176
177/*
178 * Overrides for Emacs so that we follow Linus's tabbing style.
179 * Emacs will notice this stuff at the end of the file and automatically
180 * adjust the settings for this buffer only. This must remain at the end
181 * of the file.
182 * ---------------------------------------------------------------------------
183 * Local variables:
184 * c-file-style: "linux"
185 * End:
186 */
diff --git a/arch/um/sys-x86_64/sysrq.c b/arch/um/sys-x86_64/sysrq.c
new file mode 100644
index 000000000000..ddf74691a610
--- /dev/null
+++ b/arch/um/sys-x86_64/sysrq.c
@@ -0,0 +1,49 @@
1/*
2 * Copyright 2003 PathScale, Inc.
3 *
4 * Licensed under the GPL
5 */
6
7#include "linux/kernel.h"
8#include "linux/utsname.h"
9#include "linux/module.h"
10#include "asm/current.h"
11#include "asm/ptrace.h"
12#include "sysrq.h"
13
14void __show_regs(struct pt_regs * regs)
15{
16 printk("\n");
17 print_modules();
18 printk("Pid: %d, comm: %.20s %s %s\n",
19 current->pid, current->comm, print_tainted(), system_utsname.release);
20 printk("RIP: %04lx:[<%016lx>] ", PT_REGS_CS(regs) & 0xffff,
21 PT_REGS_RIP(regs));
22 printk("\nRSP: %016lx EFLAGS: %08lx\n", PT_REGS_RSP(regs),
23 PT_REGS_EFLAGS(regs));
24 printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
25 PT_REGS_RAX(regs), PT_REGS_RBX(regs), PT_REGS_RCX(regs));
26 printk("RDX: %016lx RSI: %016lx RDI: %016lx\n",
27 PT_REGS_RDX(regs), PT_REGS_RSI(regs), PT_REGS_RDI(regs));
28 printk("RBP: %016lx R08: %016lx R09: %016lx\n",
29 PT_REGS_RBP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs));
30 printk("R10: %016lx R11: %016lx R12: %016lx\n",
31 PT_REGS_R10(regs), PT_REGS_R11(regs), PT_REGS_R12(regs));
32 printk("R13: %016lx R14: %016lx R15: %016lx\n",
33 PT_REGS_R13(regs), PT_REGS_R14(regs), PT_REGS_R15(regs));
34}
35
36void show_regs(struct pt_regs *regs)
37{
38 __show_regs(regs);
39 show_trace((unsigned long *) &regs);
40}
41
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/sys-x86_64/util/Makefile b/arch/um/sys-x86_64/util/Makefile
new file mode 100644
index 000000000000..002607980864
--- /dev/null
+++ b/arch/um/sys-x86_64/util/Makefile
@@ -0,0 +1,10 @@
1# Copyright 2003 - 2004 Pathscale, Inc
2# Released under the GPL
3
4hostprogs-y := mk_sc mk_thread
5always := $(hostprogs-y)
6
7mk_thread-objs := mk_thread_kern.o mk_thread_user.o
8
9HOSTCFLAGS_mk_thread_kern.o := $(CFLAGS) $(CPPFLAGS)
10HOSTCFLAGS_mk_thread_user.o := $(USER_CFLAGS)
diff --git a/arch/um/sys-x86_64/util/mk_sc.c b/arch/um/sys-x86_64/util/mk_sc.c
new file mode 100644
index 000000000000..c236e213918d
--- /dev/null
+++ b/arch/um/sys-x86_64/util/mk_sc.c
@@ -0,0 +1,58 @@
1/* Copyright (C) 2003 - 2004 PathScale, Inc
2 * Released under the GPL
3 */
4
5#include <stdio.h>
6#include <signal.h>
7#include <linux/stddef.h>
8
9#define SC_OFFSET(name, field) \
10 printf("#define " name \
11 "(sc) *((unsigned long *) &(((char *) (sc))[%ld]))\n",\
12 offsetof(struct sigcontext, field))
13
14#define SC_FP_OFFSET(name, field) \
15 printf("#define " name \
16 "(sc) *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[%ld]))\n",\
17 offsetof(struct _fpstate, field))
18
19#define SC_FP_OFFSET_PTR(name, field, type) \
20 printf("#define " name \
21 "(sc) ((" type " *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\
22 offsetof(struct _fpstate, field))
23
24int main(int argc, char **argv)
25{
26 SC_OFFSET("SC_RBX", rbx);
27 SC_OFFSET("SC_RCX", rcx);
28 SC_OFFSET("SC_RDX", rdx);
29 SC_OFFSET("SC_RSI", rsi);
30 SC_OFFSET("SC_RDI", rdi);
31 SC_OFFSET("SC_RBP", rbp);
32 SC_OFFSET("SC_RAX", rax);
33 SC_OFFSET("SC_R8", r8);
34 SC_OFFSET("SC_R9", r9);
35 SC_OFFSET("SC_R10", r10);
36 SC_OFFSET("SC_R11", r11);
37 SC_OFFSET("SC_R12", r12);
38 SC_OFFSET("SC_R13", r13);
39 SC_OFFSET("SC_R14", r14);
40 SC_OFFSET("SC_R15", r15);
41 SC_OFFSET("SC_IP", rip);
42 SC_OFFSET("SC_SP", rsp);
43 SC_OFFSET("SC_CR2", cr2);
44 SC_OFFSET("SC_ERR", err);
45 SC_OFFSET("SC_TRAPNO", trapno);
46 SC_OFFSET("SC_CS", cs);
47 SC_OFFSET("SC_FS", fs);
48 SC_OFFSET("SC_GS", gs);
49 SC_OFFSET("SC_EFLAGS", eflags);
50 SC_OFFSET("SC_SIGMASK", oldmask);
51#if 0
52 SC_OFFSET("SC_ORIG_RAX", orig_rax);
53 SC_OFFSET("SC_DS", ds);
54 SC_OFFSET("SC_ES", es);
55 SC_OFFSET("SC_SS", ss);
56#endif
57 return(0);
58}
diff --git a/arch/um/sys-x86_64/util/mk_thread_kern.c b/arch/um/sys-x86_64/util/mk_thread_kern.c
new file mode 100644
index 000000000000..a281673f02b2
--- /dev/null
+++ b/arch/um/sys-x86_64/util/mk_thread_kern.c
@@ -0,0 +1,21 @@
1#include "linux/config.h"
2#include "linux/stddef.h"
3#include "linux/sched.h"
4
5extern void print_head(void);
6extern void print_constant_ptr(char *name, int value);
7extern void print_constant(char *name, char *type, int value);
8extern void print_tail(void);
9
10#define THREAD_OFFSET(field) offsetof(struct task_struct, thread.field)
11
12int main(int argc, char **argv)
13{
14 print_head();
15#ifdef CONFIG_MODE_TT
16 print_constant("TASK_EXTERN_PID", "int", THREAD_OFFSET(mode.tt.extern_pid));
17#endif
18 print_tail();
19 return(0);
20}
21
diff --git a/arch/um/sys-x86_64/util/mk_thread_user.c b/arch/um/sys-x86_64/util/mk_thread_user.c
new file mode 100644
index 000000000000..7989725568b8
--- /dev/null
+++ b/arch/um/sys-x86_64/util/mk_thread_user.c
@@ -0,0 +1,30 @@
1#include <stdio.h>
2
3void print_head(void)
4{
5 printf("/*\n");
6 printf(" * Generated by mk_thread\n");
7 printf(" */\n");
8 printf("\n");
9 printf("#ifndef __UM_THREAD_H\n");
10 printf("#define __UM_THREAD_H\n");
11 printf("\n");
12}
13
14void print_constant_ptr(char *name, int value)
15{
16 printf("#define %s(task) ((unsigned long *) "
17 "&(((char *) (task))[%d]))\n", name, value);
18}
19
20void print_constant(char *name, char *type, int value)
21{
22 printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type,
23 value);
24}
25
26void print_tail(void)
27{
28 printf("\n");
29 printf("#endif\n");
30}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 20:20:33 -0500