gwj / at91sam9263 · Commits

Commit 70a194b930797263bd6cb962d7f09596a07b4fef

Authored by bellard
1 parent 25731098

fixed invalid Linux asm/unistd.h header for PowerPC and gcc 3.3 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@367 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 123 additions and 0 deletions
linux-user/syscall.c
  View file @70a194b
... ... @@ -68,6 +68,129 @@
68 68 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2])
69 69 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2])
70 70  
  71 +
  72 +#if defined(__powerpc__)
  73 +#undef __syscall_nr
  74 +#undef __sc_loadargs_0
  75 +#undef __sc_loadargs_1
  76 +#undef __sc_loadargs_2
  77 +#undef __sc_loadargs_3
  78 +#undef __sc_loadargs_4
  79 +#undef __sc_loadargs_5
  80 +#undef __sc_asm_input_0
  81 +#undef __sc_asm_input_1
  82 +#undef __sc_asm_input_2
  83 +#undef __sc_asm_input_3
  84 +#undef __sc_asm_input_4
  85 +#undef __sc_asm_input_5
  86 +#undef _syscall0
  87 +#undef _syscall1
  88 +#undef _syscall2
  89 +#undef _syscall3
  90 +#undef _syscall4
  91 +#undef _syscall5
  92 +
  93 +/* need to redefine syscalls as Linux kernel defines are incorrect for
  94 + the clobber list */
  95 +/* On powerpc a system call basically clobbers the same registers like a
  96 + * function call, with the exception of LR (which is needed for the
  97 + * "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
  98 + * an error return status).
  99 + */
  100 +
  101 +#define __syscall_nr(nr, type, name, args...) \
  102 + unsigned long __sc_ret, __sc_err; \
  103 + { \
  104 + register unsigned long __sc_0 __asm__ ("r0"); \
  105 + register unsigned long __sc_3 __asm__ ("r3"); \
  106 + register unsigned long __sc_4 __asm__ ("r4"); \
  107 + register unsigned long __sc_5 __asm__ ("r5"); \
  108 + register unsigned long __sc_6 __asm__ ("r6"); \
  109 + register unsigned long __sc_7 __asm__ ("r7"); \
  110 + \
  111 + __sc_loadargs_##nr(name, args); \
  112 + __asm__ __volatile__ \
  113 + ("sc \n\t" \
  114 + "mfcr %0 " \
  115 + : "=&r" (__sc_0), \
  116 + "=&r" (__sc_3), "=&r" (__sc_4), \
  117 + "=&r" (__sc_5), "=&r" (__sc_6), \
  118 + "=&r" (__sc_7) \
  119 + : __sc_asm_input_##nr \
  120 + : "cr0", "ctr", "memory", \
  121 + "r8", "r9", "r10","r11", "r12"); \
  122 + __sc_ret = __sc_3; \
  123 + __sc_err = __sc_0; \
  124 + } \
  125 + if (__sc_err & 0x10000000) \
  126 + { \
  127 + errno = __sc_ret; \
  128 + __sc_ret = -1; \
  129 + } \
  130 + return (type) __sc_ret
  131 +
  132 +#define __sc_loadargs_0(name, dummy...) \
  133 + __sc_0 = __NR_##name
  134 +#define __sc_loadargs_1(name, arg1) \
  135 + __sc_loadargs_0(name); \
  136 + __sc_3 = (unsigned long) (arg1)
  137 +#define __sc_loadargs_2(name, arg1, arg2) \
  138 + __sc_loadargs_1(name, arg1); \
  139 + __sc_4 = (unsigned long) (arg2)
  140 +#define __sc_loadargs_3(name, arg1, arg2, arg3) \
  141 + __sc_loadargs_2(name, arg1, arg2); \
  142 + __sc_5 = (unsigned long) (arg3)
  143 +#define __sc_loadargs_4(name, arg1, arg2, arg3, arg4) \
  144 + __sc_loadargs_3(name, arg1, arg2, arg3); \
  145 + __sc_6 = (unsigned long) (arg4)
  146 +#define __sc_loadargs_5(name, arg1, arg2, arg3, arg4, arg5) \
  147 + __sc_loadargs_4(name, arg1, arg2, arg3, arg4); \
  148 + __sc_7 = (unsigned long) (arg5)
  149 +
  150 +#define __sc_asm_input_0 "0" (__sc_0)
  151 +#define __sc_asm_input_1 __sc_asm_input_0, "1" (__sc_3)
  152 +#define __sc_asm_input_2 __sc_asm_input_1, "2" (__sc_4)
  153 +#define __sc_asm_input_3 __sc_asm_input_2, "3" (__sc_5)
  154 +#define __sc_asm_input_4 __sc_asm_input_3, "4" (__sc_6)
  155 +#define __sc_asm_input_5 __sc_asm_input_4, "5" (__sc_7)
  156 +
  157 +#define _syscall0(type,name) \
  158 +type name(void) \
  159 +{ \
  160 + __syscall_nr(0, type, name); \
  161 +}
  162 +
  163 +#define _syscall1(type,name,type1,arg1) \
  164 +type name(type1 arg1) \
  165 +{ \
  166 + __syscall_nr(1, type, name, arg1); \
  167 +}
  168 +
  169 +#define _syscall2(type,name,type1,arg1,type2,arg2) \
  170 +type name(type1 arg1, type2 arg2) \
  171 +{ \
  172 + __syscall_nr(2, type, name, arg1, arg2); \
  173 +}
  174 +
  175 +#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
  176 +type name(type1 arg1, type2 arg2, type3 arg3) \
  177 +{ \
  178 + __syscall_nr(3, type, name, arg1, arg2, arg3); \
  179 +}
  180 +
  181 +#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
  182 +type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
  183 +{ \
  184 + __syscall_nr(4, type, name, arg1, arg2, arg3, arg4); \
  185 +}
  186 +
  187 +#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
  188 +type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
  189 +{ \
  190 + __syscall_nr(5, type, name, arg1, arg2, arg3, arg4, arg5); \
  191 +}
  192 +#endif
  193 +
71 194 #define __NR_sys_uname __NR_uname
72 195 #define __NR_sys_getcwd1 __NR_getcwd
73 196 #define __NR_sys_statfs __NR_statfs
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