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authorH. Peter Anvin <hpa@zytor.com>2012-02-14 17:38:31 -0500
committerH. Peter Anvin <hpa@zytor.com>2012-02-20 15:51:00 -0500
commit6cbb369f578378cf5b1876766d860ae7c2a94d60 (patch)
tree0006e59ecea7023014dd619cb4199eb342b60fb7 /arch/x86
parent6630f11ba54414b9870d87dfef2bee467bfa842a (diff)
x32: Generate <asm/unistd_x32.h>
Generate <asm/unistd_x32.h>; this exports x32 system call numbers to user space. [ v2: Enclose all arguments to syshdr in '' so empty arguments aren't dropped on the floor. ] Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/Kbuild1
-rw-r--r--arch/x86/include/asm/unistd.h7
-rw-r--r--arch/x86/syscalls/Makefile13
3 files changed, 17 insertions, 4 deletions
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 986954fb9513..f9c0d3ba9e84 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -25,3 +25,4 @@ header-y += vsyscall.h
25 25
26genhdr-y += unistd_32.h 26genhdr-y += unistd_32.h
27genhdr-y += unistd_64.h 27genhdr-y += unistd_64.h
28genhdr-y += unistd_x32.h
diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h
index 21f77b89e47a..dab5349f14fc 100644
--- a/arch/x86/include/asm/unistd.h
+++ b/arch/x86/include/asm/unistd.h
@@ -1,6 +1,9 @@
1#ifndef _ASM_X86_UNISTD_H 1#ifndef _ASM_X86_UNISTD_H
2#define _ASM_X86_UNISTD_H 1 2#define _ASM_X86_UNISTD_H 1
3 3
4/* x32 syscall flag bit */
5#define __X32_SYSCALL_BIT 0x40000000
6
4#ifdef __KERNEL__ 7#ifdef __KERNEL__
5# ifdef CONFIG_X86_32 8# ifdef CONFIG_X86_32
6 9
@@ -52,8 +55,10 @@
52#else 55#else
53# ifdef __i386__ 56# ifdef __i386__
54# include <asm/unistd_32.h> 57# include <asm/unistd_32.h>
55# else 58# elif defined(__LP64__)
56# include <asm/unistd_64.h> 59# include <asm/unistd_64.h>
60# else
61# include <asm/unistd_x32.h>
57# endif 62# endif
58#endif 63#endif
59 64
diff --git a/arch/x86/syscalls/Makefile b/arch/x86/syscalls/Makefile
index 89dd9581c5a2..8051c3134ad1 100644
--- a/arch/x86/syscalls/Makefile
+++ b/arch/x86/syscalls/Makefile
@@ -10,8 +10,10 @@ syshdr := $(srctree)/$(src)/syscallhdr.sh
10systbl := $(srctree)/$(src)/syscalltbl.sh 10systbl := $(srctree)/$(src)/syscalltbl.sh
11 11
12quiet_cmd_syshdr = SYSHDR $@ 12quiet_cmd_syshdr = SYSHDR $@
13 cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' $< $@ \ 13 cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
14 $(syshdr_abi_$(basetarget)) $(syshdr_pfx_$(basetarget)) 14 '$(syshdr_abi_$(basetarget))' \
15 '$(syshdr_pfx_$(basetarget))' \
16 '$(syshdr_offset_$(basetarget))'
15quiet_cmd_systbl = SYSTBL $@ 17quiet_cmd_systbl = SYSTBL $@
16 cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@ 18 cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
17 19
@@ -24,6 +26,11 @@ syshdr_pfx_unistd_32_ia32 := ia32_
24$(out)/unistd_32_ia32.h: $(syscall32) $(syshdr) 26$(out)/unistd_32_ia32.h: $(syscall32) $(syshdr)
25 $(call if_changed,syshdr) 27 $(call if_changed,syshdr)
26 28
29syshdr_abi_unistd_x32 := common,x32
30syshdr_offset_unistd_x32 := __X32_SYSCALL_BIT
31$(out)/unistd_x32.h: $(syscall64) $(syshdr)
32 $(call if_changed,syshdr)
33
27syshdr_abi_unistd_64 := common,64 34syshdr_abi_unistd_64 := common,64
28$(out)/unistd_64.h: $(syscall64) $(syshdr) 35$(out)/unistd_64.h: $(syscall64) $(syshdr)
29 $(call if_changed,syshdr) 36 $(call if_changed,syshdr)
@@ -33,7 +40,7 @@ $(out)/syscalls_32.h: $(syscall32) $(systbl)
33$(out)/syscalls_64.h: $(syscall64) $(systbl) 40$(out)/syscalls_64.h: $(syscall64) $(systbl)
34 $(call if_changed,systbl) 41 $(call if_changed,systbl)
35 42
36syshdr-y += unistd_32.h unistd_64.h 43syshdr-y += unistd_32.h unistd_64.h unistd_x32.h
37syshdr-y += syscalls_32.h 44syshdr-y += syscalls_32.h
38syshdr-$(CONFIG_X86_64) += unistd_32_ia32.h 45syshdr-$(CONFIG_X86_64) += unistd_32_ia32.h
39syshdr-$(CONFIG_X86_64) += syscalls_64.h 46syshdr-$(CONFIG_X86_64) += syscalls_64.h