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tail order the args for better compressability;

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special syscall1m for mmap because Z0 and Z1 don't work there.

committer: jreiser <jreiser> 958847154 +0000
This commit is contained in:
John Reiser 2000-05-20 18:25:54 +00:00
parent 7854a924c7
commit 1c24a96864
1 changed files with 19 additions and 8 deletions
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27
src/stub/linux.hh
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@ -132,12 +132,12 @@ type name(type1 arg1) \
long __res; \
if (Z1(__NR_##name)) { \
if (Z0(arg1)) { \
__asm__ __volatile__ ("push %1; popl %0; xorl %%ebx,%%ebx; int $0x80" \
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name) \
: "ebx"); \
} else if (Z1(arg1)) { \
__asm__ __volatile__ ("push %1; popl %0; push %2; popl %%ebx; int $0x80" \
__asm__ __volatile__ ("push %2; popl %%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"g" ((long)(arg1)) \
: "ebx"); \
@ -154,33 +154,44 @@ type name(type1 arg1) \
return (type) __res; \
}
// special for mmap; somehow Z0(arg1) and Z1(arg1) don't work
#define _syscall1m(type,name,type1,arg1) \
type name(type1 arg1) \
{ \
long __res; \
__asm__ __volatile__ ("push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"b" ((long)(arg1))); \
return (type) __res; \
}
#define _syscall2(type,name,type1,arg1,type2,arg2) \
type name(type1 arg1,type2 arg2) \
{ \
long __res; \
if (Z1(__NR_##name)) { \
if (Z0(arg1) && Z0(arg2)) { \
__asm__ __volatile__ ("push %1; popl %0; xorl %%ebx,%%ebx; xorl %%ecx,%%ecx; int $0x80" \
__asm__ __volatile__ ("xorl %%ecx,%%ecx; xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name) \
: "ebx", "ecx"); \
} else if (Z0(arg1) && Z1(arg2)) { \
__asm__ __volatile__ ("push %1; popl %0; xorl %%ebx,%%ebx; push %2; popl %%ecx; int $0x80" \
__asm__ __volatile__ ("push %2; popl %%ecx; xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"g" ((long)(arg2)) \
: "ebx", "ecx"); \
} else if (Z1(arg1) && Z0(arg2)) { \
__asm__ __volatile__ ("push %1; popl %0; push %2; popl %%ebx; xorl %%ecx,%%ecx; int $0x80" \
__asm__ __volatile__ ("xorl %%ecx,%%ecx; push %2; popl %%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"g" ((long)(arg1)) \
: "ebx", "ecx"); \
} else if (Z1(arg1) && Z1(arg2)) { \
__asm__ __volatile__ ("push %1; popl %0; push %2; popl %%ebx; push %3; popl %%ecx; int $0x80" \
__asm__ __volatile__ ("push %3; popl %%ecx; push %2; popl %%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"g" ((long)(arg1)),"g" ((long)(arg2)) \
: "ebx", "ecx"); \
} else if (Z0(arg1)) { \
__asm__ __volatile__ ("push %1; popl %0; xorl %%ebx,%%ebx; int $0x80" \
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
: "=a" (__res) \
: "g" (__NR_##name),"c" ((long)(arg2)) \
: "ebx"); \
@ -253,7 +264,7 @@ static inline _syscall0(pid_t,getpid)
static inline _syscall2(int,getrusage,int,who,struct rusage *,usage);
static inline _syscall2(int,gettimeofday,struct timeval *,tv,void *,tz)
static inline _syscall3(off_t,lseek,int,fd,off_t,offset,int,whence)
static inline _syscall1(caddr_t,mmap,const int *,args)
static inline _syscall1m(caddr_t,mmap,const int *,args)
static inline _syscall3(int,mprotect,void *,addr,size_t,len,int,prot)
static inline _syscall3(int,msync,const void *,start,size_t,length,int,flags)
static inline _syscall2(int,munmap,void *,start,size_t,length)