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authorAndi Kleen <ak@suse.de>2006-04-07 19:50:31 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-09 11:53:53 -0700
commit67d53ea5a3d42aadeb1584e757ca4660c0e8a810 (patch)
tree054906bb672c6faad287ede5b34c53d56afdc629 /arch/x86_64
parentbbd3aff89d4b34ef17a748e4c001ecc5b43e3e55 (diff)
[PATCH] x86_64: Eliminate IA32_NR_syscalls define
Or rather compute it based on the table length automatically. This also has the intended side effect of not warning for new system calls anymore. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/ia32/ia32entry.S17
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index 35b2faccdc6..393dc83f3b8 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -15,6 +15,8 @@
#include <asm/vsyscall32.h>
#include <linux/linkage.h>
+#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
+
.macro IA32_ARG_FIXUP noebp=0
movl %edi,%r8d
.if \noebp
@@ -109,8 +111,8 @@ ENTRY(ia32_sysenter_target)
CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
@@ -210,8 +212,8 @@ ENTRY(ia32_cstar_target)
CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
- cmpl $IA32_NR_syscalls,%eax
- jae ia32_badsys
+ cmpl $IA32_NR_syscalls-1,%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
@@ -296,8 +298,8 @@ ENTRY(ia32_syscall)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
jnz ia32_tracesys
ia32_do_syscall:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP
call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
@@ -691,6 +693,3 @@ ia32_sys_call_table:
.quad compat_sys_set_robust_list
.quad compat_sys_get_robust_list
ia32_syscall_end:
- .rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
- .quad ni_syscall
- .endr