File:  [Qemu by Fabrice Bellard] / qemu / tests / hello-arm.c
Revision 1.1.1.2 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:47:58 2018 UTC (3 years, 3 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu1001, qemu1000, qemu0151, qemu0150, qemu0141, qemu0140, qemu0130, qemu0125, qemu0124, qemu0123, qemu0122, qemu0121, qemu0120, qemu0111, qemu0110, qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, qemu0091, HEAD
qemu 0.9.1

    1: #define __NR_SYSCALL_BASE	0x900000
    2: #define __NR_exit1			(__NR_SYSCALL_BASE+  1)
    3: #define __NR_write			(__NR_SYSCALL_BASE+  4)
    4: 
    5: #define __sys2(x) #x
    6: #define __sys1(x) __sys2(x)
    7: 
    8: #ifndef __syscall
    9: #define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t"
   10: #endif
   11: 
   12: #define __syscall_return(type, res)					\
   13: do {									\
   14: 	return (type) (res);						\
   15: } while (0)
   16: 
   17: #define _syscall0(type,name)						\
   18: type name(void) {							\
   19:   long __res;								\
   20:   __asm__ __volatile__ (						\
   21:   __syscall(name)							\
   22:   "mov %0,r0"								\
   23:   :"=r" (__res) : : "r0","lr");						\
   24:   __syscall_return(type,__res);						\
   25: }
   26: 
   27: #define _syscall1(type,name,type1,arg1)					\
   28: type name(type1 arg1) {							\
   29:   long __res;								\
   30:   __asm__ __volatile__ (						\
   31:   "mov\tr0,%1\n\t"							\
   32:   __syscall(name)							\
   33:   "mov %0,r0"								\
   34:         : "=r" (__res)							\
   35:         : "r" ((long)(arg1))						\
   36: 	: "r0","lr");							\
   37:   __syscall_return(type,__res);						\
   38: }
   39: 
   40: #define _syscall2(type,name,type1,arg1,type2,arg2)			\
   41: type name(type1 arg1,type2 arg2) {					\
   42:   long __res;								\
   43:   __asm__ __volatile__ (						\
   44:   "mov\tr0,%1\n\t"							\
   45:   "mov\tr1,%2\n\t"							\
   46:   __syscall(name)							\
   47:   "mov\t%0,r0"								\
   48:         : "=r" (__res)							\
   49:         : "r" ((long)(arg1)),"r" ((long)(arg2))				\
   50: 	: "r0","r1","lr");						\
   51:   __syscall_return(type,__res);						\
   52: }
   53: 
   54: 
   55: #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
   56: type name(type1 arg1,type2 arg2,type3 arg3) {				\
   57:   long __res;								\
   58:   __asm__ __volatile__ (						\
   59:   "mov\tr0,%1\n\t"							\
   60:   "mov\tr1,%2\n\t"							\
   61:   "mov\tr2,%3\n\t"							\
   62:   __syscall(name)							\
   63:   "mov\t%0,r0"								\
   64:         : "=r" (__res)							\
   65:         : "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3))	\
   66:         : "r0","r1","r2","lr");						\
   67:   __syscall_return(type,__res);						\
   68: }
   69: 
   70: 
   71: #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)		\
   72: type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {				\
   73:   long __res;										\
   74:   __asm__ __volatile__ (								\
   75:   "mov\tr0,%1\n\t"									\
   76:   "mov\tr1,%2\n\t"									\
   77:   "mov\tr2,%3\n\t"									\
   78:   "mov\tr3,%4\n\t"									\
   79:   __syscall(name)									\
   80:   "mov\t%0,r0"										\
   81:   	: "=r" (__res)									\
   82:   	: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4))	\
   83:   	: "r0","r1","r2","r3","lr");							\
   84:   __syscall_return(type,__res);								\
   85: }
   86: 
   87: 
   88: #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5)	\
   89: type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {			\
   90:   long __res;										\
   91:   __asm__ __volatile__ (								\
   92:   "mov\tr0,%1\n\t"									\
   93:   "mov\tr1,%2\n\t"									\
   94:   "mov\tr2,%3\n\t"									\
   95:   "mov\tr3,%4\n\t"									\
   96:   "mov\tr4,%5\n\t"									\
   97:   __syscall(name)									\
   98:   "mov\t%0,r0"										\
   99:   	: "=r" (__res)									\
  100:   	: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)),	\
  101: 	  "r" ((long)(arg5))								\
  102: 	: "r0","r1","r2","r3","r4","lr");						\
  103:   __syscall_return(type,__res);								\
  104: }
  105: 
  106: _syscall1(int,exit1,int,status);
  107: _syscall3(int,write,int,fd,const char *,buf, int, len);
  108: 
  109: void _start(void)
  110: {
  111:     write(1, "Hello World\n", 12);
  112:     exit1(0);
  113: }

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