mirror of
https://github.com/upx/upx
synced 2025-09-28 19:06:07 +08:00
Linux syscalls can clobber any input register, thanks to gcc and
the lack of a Linux kernel ABI. linux.hh committer: jreiser <jreiser> 1144967342 +0000
This commit is contained in:
John Reiser
parent
f700273624
commit
6a4db2ecab
|
|
@ -188,13 +188,13 @@ type name(void) \
|
|||
{ \
|
||||
long __res; \
|
||||
if (Z1(__NR_##name)) { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name)); \
|
||||
: [sysN] "g" (__NR_##name)); \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "a" (__NR_##name)); \
|
||||
: [sysN] "a" (__NR_##name)); \
|
||||
} \
|
||||
return (type) __res; \
|
||||
}
|
||||
|
|
@ -202,26 +202,26 @@ type name(void) \
|
|||
#define _syscall1(type,name,type1,arg1) \
|
||||
type name(type1 arg1) \
|
||||
{ \
|
||||
long __res; \
|
||||
long __res, junk; \
|
||||
if (Z1(__NR_##name)) { \
|
||||
if (Z0(arg1)) { \
|
||||
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name) \
|
||||
: [sysN] "g" (__NR_##name) \
|
||||
: "ebx"); \
|
||||
} else if (Z1(arg1)) { \
|
||||
__asm__ __volatile__ ("push %2; popl %%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("push %[a1]; popl %%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"g" ((long)(arg1)) \
|
||||
: [sysN] "g" (__NR_##name), [a1] "g" ((long)(arg1)) \
|
||||
: "ebx"); \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"b" ((long)(arg1))); \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res), "=b" (junk) \
|
||||
: [sysN] "g" (__NR_##name),"b" ((long)(arg1))); \
|
||||
} \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "=a" (__res), "=b" (junk) \
|
||||
: "a" (__NR_##name),"b" ((long)(arg1))); \
|
||||
} \
|
||||
return (type) __res; \
|
||||
|
|
@ -235,8 +235,8 @@ void __attribute__((__noreturn__)) name(type1 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)) ); \
|
||||
__asm__ __volatile__ ("push %[a1]; popl %%ebx; push %[sysN]; popl %%eax; int $0x80" \
|
||||
: : [sysN] "g" (__NR_##name), [a1] "g" ((long)(arg1)) ); \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("push %0; popl %%eax; int $0x80" \
|
||||
: : "g" (__NR_##name),"b" ((long)(arg1))); \
|
||||
|
|
@ -248,71 +248,60 @@ void __attribute__((__noreturn__)) name(type1 arg1) \
|
|||
for(;;) ; \
|
||||
}
|
||||
|
||||
// special for mmap; somehow Z0(arg1) and Z1(arg1) do not 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; \
|
||||
long __res, junkb, junkc; \
|
||||
if (Z1(__NR_##name)) { \
|
||||
if (Z0(arg1) && Z0(arg2)) { \
|
||||
__asm__ __volatile__ ("xorl %%ecx,%%ecx; xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("xorl %%ecx,%%ecx; xorl %%ebx,%%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name) \
|
||||
: [sysN] "g" (__NR_##name) \
|
||||
: "ebx", "ecx"); \
|
||||
} else if (Z0(arg1) && Z1(arg2)) { \
|
||||
__asm__ __volatile__ ("push %2; popl %%ecx; xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("push %[a2]; popl %%ecx; xorl %%ebx,%%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"g" ((long)(arg2)) \
|
||||
: [sysN] "g" (__NR_##name), [a2] "g" ((long)(arg2)) \
|
||||
: "ebx", "ecx"); \
|
||||
} else if (Z1(arg1) && Z0(arg2)) { \
|
||||
__asm__ __volatile__ ("xorl %%ecx,%%ecx; push %2; popl %%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("xorl %%ecx,%%ecx; push %[a1]; popl %%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"g" ((long)(arg1)) \
|
||||
: [sysN] "g" (__NR_##name), [a1] "g" ((long)(arg1)) \
|
||||
: "ebx", "ecx"); \
|
||||
} else if (Z1(arg1) && Z1(arg2)) { \
|
||||
__asm__ __volatile__ ("push %3; popl %%ecx; push %2; popl %%ebx; push %1; popl %0; int $0x80" \
|
||||
__asm__ __volatile__ ("push %[a2]; popl %%ecx; push %[a1]; popl %%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"g" ((long)(arg1)),"g" ((long)(arg2)) \
|
||||
: [sysN] "g" (__NR_##name), [a1] "g" ((long)(arg1)), [a2] "g" ((long)(arg2)) \
|
||||
: "ebx", "ecx"); \
|
||||
} else if (Z0(arg1)) { \
|
||||
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %1; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"c" ((long)(arg2)) \
|
||||
__asm__ __volatile__ ("xorl %%ebx,%%ebx; push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res), "=c" (junkc) \
|
||||
: [sysN] "g" (__NR_##name),"c" ((long)(arg2)) \
|
||||
: "ebx"); \
|
||||
} else if (Z0(arg2)) { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; xorl %%ecx,%%ecx; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"b" ((long)(arg1)) \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; xorl %%ecx,%%ecx; int $0x80" \
|
||||
: "=a" (__res), "=b" (junkb) \
|
||||
: [sysN] "g" (__NR_##name),"b" ((long)(arg1)) \
|
||||
: "ecx"); \
|
||||
} else if (Z1(arg1)) { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; push %2; popl %%ebx; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"g" ((long)(arg1)),"c" ((long)(arg2)) \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; push %[a1]; popl %%ebx; int $0x80" \
|
||||
: "=a" (__res), "=c" (junkc) \
|
||||
: [sysN] "g" (__NR_##name), [a1] "g" ((long)(arg1)),"c" ((long)(arg2)) \
|
||||
: "ebx"); \
|
||||
} else if (Z1(arg2)) { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; push %3; popl %%ecx; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"b" ((long)(arg1)),"g" ((long)(arg2)) \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; push %[a2]; popl %%ecx; int $0x80" \
|
||||
: "=a" (__res), "=b" (junkb) \
|
||||
: [sysN] "g" (__NR_##name),"b" ((long)(arg1)), [a2] "g" ((long)(arg2)) \
|
||||
: "ecx"); \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res), "=b" (junkb), "=c" (junkc) \
|
||||
: [sysN] "g" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
|
||||
} \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "a" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
|
||||
: "=a" (__res), "=b" (junkb), "=c" (junkc) \
|
||||
: [sysN] "a" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
|
||||
} \
|
||||
return (type) __res; \
|
||||
}
|
||||
|
|
@ -320,16 +309,16 @@ type name(type1 arg1,type2 arg2) \
|
|||
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
|
||||
type name(type1 arg1,type2 arg2,type3 arg3) \
|
||||
{ \
|
||||
long __res; \
|
||||
long __res, junkb, junkc, junkd; \
|
||||
if (Z1(__NR_##name)) { \
|
||||
__asm__ __volatile__ ("push %1; popl %0; int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "g" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
|
||||
__asm__ __volatile__ ("push %[sysN]; popl %0; int $0x80" \
|
||||
: "=a" (__res), "=b" (junkb), "=c" (junkc), "=d" (junkd) \
|
||||
: [sysN] "g" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
|
||||
"d" ((long)(arg3))); \
|
||||
} else { \
|
||||
__asm__ __volatile__ ("int $0x80" \
|
||||
: "=a" (__res) \
|
||||
: "a" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
|
||||
: "=a" (__res), "=b" (junkb), "=c" (junkc), "=d" (junkd) \
|
||||
: [sysN] "a" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
|
||||
"d" ((long)(arg3))); \
|
||||
} \
|
||||
return (type) __res; \
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user