diff options
Diffstat (limited to 'src/syscall-s390.h')
| -rw-r--r-- | src/syscall-s390.h | 94 |
1 files changed, 53 insertions, 41 deletions
diff --git a/src/syscall-s390.h b/src/syscall-s390.h index 515c217..3ec5ee3 100644 --- a/src/syscall-s390.h +++ b/src/syscall-s390.h @@ -4,37 +4,25 @@ #define __NR_io_submit 246 #define __NR_io_cancel 247 -#define _svc_clobber "2", "cc", "memory" - -#ifdef __s390x__ -#define __LR "lgr " /* 64 bit load register */ -#else -#define __LR "lr " /* 32 bit load register */ -#endif - -#define io_syscall0(type,fname,sname) \ -type fname(void) { \ - long __res; \ - __asm__ __volatile__ ( \ - " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ - : "i" (__NR_##sname) \ - : _svc_clobber ); \ - return (type) __res; \ -} +#define io_svc_clobber "1", "cc", "memory" #define io_syscall1(type,fname,sname,type1,arg1) \ type fname(type1 arg1) { \ register type1 __arg1 asm("2") = arg1; \ + register long __svcres asm("2"); \ long __res; \ __asm__ __volatile__ ( \ + " .if %1 < 256\n" \ " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ + " .else\n" \ + " la %%r1,%1\n" \ + " .svc 0\n" \ + " .endif" \ + : "=d" (__svcres) \ : "i" (__NR_##sname), \ - "d" (__arg1) \ - : _svc_clobber ); \ + "0" (__arg1) \ + : io_svc_clobber ); \ + __res = __svcres; \ return (type) __res; \ } @@ -42,34 +30,46 @@ type fname(type1 arg1) { \ type fname(type1 arg1, type2 arg2) { \ register type1 __arg1 asm("2") = arg1; \ register type2 __arg2 asm("3") = arg2; \ + register long __svcres asm("2"); \ long __res; \ __asm__ __volatile__ ( \ + " .if %1 < 256\n" \ " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ + " .else\n" \ + " la %%r1,%1\n" \ + " svc 0\n" \ + " .endif" \ + : "=d" (__svcres) \ : "i" (__NR_##sname), \ - "d" (__arg1), \ + "0" (__arg1), \ "d" (__arg2) \ - : _svc_clobber ); \ + : io_svc_clobber ); \ + __res = __svcres; \ return (type) __res; \ } #define io_syscall3(type,fname,sname,type1,arg1,type2,arg2, \ type3,arg3) \ -type fname(type1 arg1, type2 arg2, type3 arg3) { \ +type fname(type1 arg1, type2 arg2, type3 arg3) { \ register type1 __arg1 asm("2") = arg1; \ register type2 __arg2 asm("3") = arg2; \ register type3 __arg3 asm("4") = arg3; \ + register long __svcres asm("2"); \ long __res; \ __asm__ __volatile__ ( \ + " .if %1 < 256\n" \ " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ + " .else\n" \ + " la %%r1,%1\n" \ + " svc 0\n" \ + " .endif" \ + : "=d" (__svcres) \ : "i" (__NR_##sname), \ - "d" (__arg1), \ + "0" (__arg1), \ "d" (__arg2), \ "d" (__arg3) \ - : _svc_clobber ); \ + : io_svc_clobber ); \ + __res = __svcres; \ return (type) __res; \ } @@ -80,40 +80,52 @@ type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ register type2 __arg2 asm("3") = arg2; \ register type3 __arg3 asm("4") = arg3; \ register type4 __arg4 asm("5") = arg4; \ + register long __svcres asm("2"); \ long __res; \ __asm__ __volatile__ ( \ + " .if %1 < 256\n" \ " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ + " .else\n" \ + " la %%r1,%1\n" \ + " svc 0\n" \ + " .endif" \ + : "=d" (__svcres) \ : "i" (__NR_##sname), \ - "d" (__arg1), \ + "0" (__arg1), \ "d" (__arg2), \ "d" (__arg3), \ "d" (__arg4) \ - : _svc_clobber ); \ + : io_svc_clobber ); \ + __res = __svcres; \ return (type) __res; \ } #define io_syscall5(type,fname,sname,type1,arg1,type2,arg2, \ type3,arg3,type4,arg4,type5,arg5) \ type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ - type5 arg5) { \ + type5 arg5) { \ register type1 __arg1 asm("2") = arg1; \ register type2 __arg2 asm("3") = arg2; \ register type3 __arg3 asm("4") = arg3; \ register type4 __arg4 asm("5") = arg4; \ register type5 __arg5 asm("6") = arg5; \ + register long __svcres asm("2"); \ long __res; \ __asm__ __volatile__ ( \ + " .if %1 < 256\n" \ " svc %b1\n" \ - " "__LR" %0,2" \ - : "=d" (__res) \ + " .else\n" \ + " la %%r1,%1\n" \ + " svc 0\n" \ + " .endif" \ + : "=d" (__svcres) \ : "i" (__NR_##sname), \ - "d" (__arg1), \ + "0" (__arg1), \ "d" (__arg2), \ "d" (__arg3), \ "d" (__arg4), \ "d" (__arg5) \ - : _svc_clobber ); \ + : io_svc_clobber ); \ + __res = __svcres; \ return (type) __res; \ } |