diff options
Diffstat (limited to 'runtime/loc2c-runtime.h')
| -rw-r--r-- | runtime/loc2c-runtime.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/runtime/loc2c-runtime.h b/runtime/loc2c-runtime.h new file mode 100644 index 00000000..6385ec83 --- /dev/null +++ b/runtime/loc2c-runtime.h @@ -0,0 +1,125 @@ +/* target operations */ + +#include <linux/types.h> +#define intptr_t long +#define uintptr_t unsigned long + + +/* These three macro definitions are generic, just shorthands + used by the generated code. */ + +#define op_abs(x) (x < 0 ? -x : x) + +#define fetch_bitfield(target, base, higherbits, nbits) \ + target = (((base) >> (sizeof (base) * 8 - (higherbits) - (nbits))) \ + & (((__typeof (base)) 1 << (nbits)) - 1)) + +#define store_bitfield(target, base, higherbits, nbits) \ + target = (target \ + &~ ((((__typeof (base)) 1 << (nbits)) - 1) \ + << (sizeof (base) * 8 - (higherbits) - (nbits))) \ + | ((__typeof (base)) (value) \ + << (sizeof (base) * 8 - (higherbits) - (nbits)))) + + +/* These operations are target-specific. */ +#include <asm/uaccess.h> + +#define fetch_register(regno) ((intptr_t) c->regs->dwarf_register_##regno) + +#if defined __i386__ + +#define dwarf_register_0 eax +#define dwarf_register_1 ecx +#define dwarf_register_2 edx +#define dwarf_register_3 ebx +#define dwarf_register_4 esp +#define dwarf_register_5 ebp +#define dwarf_register_6 esi +#define dwarf_register_7 edi + +#elif defined __x86_64__ + +#define dwarf_register_0 eax +#define dwarf_register_1 edx +#define dwarf_register_2 ecx +#define dwarf_register_3 ebx +#define dwarf_register_4 esi +#define dwarf_register_5 edi +#define dwarf_register_6 ebp +#define dwarf_register_7 esp +#define dwarf_register_8 r8 +#define dwarf_register_9 r9 +#define dwarf_register_10 r10 +#define dwarf_register_11 r11 +#define dwarf_register_12 r12 +#define dwarf_register_13 r13 +#define dwarf_register_14 r14 +#define dwarf_register_15 r15 + +#elif defined __powerpc__ + +#undef fetch_register +#define fetch_register(regno) ((intptr_t) c->regs->gpr[regno]) + +#endif + +#if defined __i386__ || defined __x86_64__ + +#define deref(size, addr) \ + ({ \ + int _bad = 0; \ + u8 _b; u16 _w; u32 _l; u64 _q; \ + intptr_t _v; \ + switch (size) \ + { \ + case 1: __get_user_asm(_b,addr,_bad,"b","b","=q",1); _v = _b; break; \ + case 2: __get_user_asm(_w,addr,_bad,"w","w","=r",1); _v = _w; break; \ + case 4: __get_user_asm(_l,addr,_bad,"l","","=r",1); _v = _l; break; \ + case 8: __get_user_asm(_q,addr,_bad,"q","","=r",1); _v = _q; break; \ + default: _v = __get_user_bad(); \ + } \ + if (_bad) \ + goto deref_fault; \ + _v; \ + }) + +#elif defined __powerpc64__ + +#define deref(size, addr) \ + ({ \ + int _bad = 0; \ + intptr_t _v; \ + switch (size) \ + { \ + case 1: __get_user_asm(_v,addr,_bad,"lbz",1); break; \ + case 2: __get_user_asm(_v,addr,_bad,"lhz",1); break; \ + case 4: __get_user_asm(_v,addr,_bad,"lwz",1); break; \ + case 8: __get_user_asm(_v,addr,_bad,"ld",1); break; \ + default: _v = __get_user_bad(); \ + } \ + if (_bad) \ + goto deref_fault; \ + _v; \ + }) + +#elif defined __powerpc__ + +#define deref(size, addr) \ + ({ \ + int _bad = 0; \ + intptr_t _v; \ + switch (size) \ + { \ + case 1: __get_user_asm(_v,addr,_bad,"lbz"); break; \ + case 2: __get_user_asm(_v,addr,_bad,"lhz"); break; \ + case 4: __get_user_asm(_v,addr,_bad,"lwz"); break; \ + case 8: __get_user_asm(_v,addr,_bad,"ld"); break; \ + default: _v = __get_user_bad(); \ + } \ + if (_bad) \ + goto deref_fault; \ + _v; \ + }) + +#endif |