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_syscall1nr() for _exit; [still wastes 4 bytes] 

committer: jreiser <jreiser> 1142210712 +0000
This commit is contained in:
John Reiser 2006-03-13 00:45:12 +00:00
parent 88d5798f45
commit cb7ee4c5d2
1 changed files with 22 additions and 1 deletions
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23
src/stub/linux.hh
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@ -214,6 +214,27 @@ type name(type1 arg1) \
return (type) __res; \
}
#define _syscall1nr(name,type1,arg1) \
void __attribute__((__noreturn__)) name(type1 arg1) \
{ \
if (Z1(__NR_##name)) { \
if (Z0(arg1)) { \
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %0; popl %%eax; int $0x80" \
: : "g" (__NR_##name) ); \
} else if (Z1(arg1)) { \
__asm__ __volatile__ ("push %1; popl %%ebx; push %0; popl %%eax; int $0x80" \
: : "g" (__NR_##name),"g" ((long)(arg1)) ); \
} else { \
__asm__ __volatile__ ("push %0; popl %%eax; int $0x80" \
: : "g" (__NR_##name),"b" ((long)(arg1))); \
} \
} else { \
__asm__ __volatile__ ("int $0x80" \
: : "a" (__NR_##name),"b" ((long)(arg1))); \
} \
for(;;) ; \
}
// special for mmap; somehow Z0(arg1) and Z1(arg1) do not work
#define _syscall1m(type,name,type1,arg1) \
type name(type1 arg1) \
@ -310,7 +331,7 @@ static inline _syscall1(int,adjtimex,struct timex *,ntx)
static inline _syscall1(void *,brk,void *,high)
static inline _syscall1(int,close,int,fd)
static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
static inline _syscall1(int,_exit,int,exitcode)
static inline _syscall1nr(_exit,int,exitcode)
static inline _syscall3(int,fcntl,int,fd,int,cmd,long,arg)
static inline _syscall2(int,ftruncate,int,fd,size_t,len)
static inline _syscall0(pid_t,fork)