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/* 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)) (base) \
<< (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)
#define store_register(regno, value) \
(c->regs->dwarf_register_##regno = (value))
#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])
#define store_register(regno) (c->regs->gpr[regno] = (value))
#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; \
})
#define store_deref(size, addr, value) \
({ \
int _bad = 0; \
switch (size) \
{ \
case 1: __put_user_asm(((u8)(value),addr,_bad,"b","b","iq",1); break; \
case 2: __put_user_asm(((u16)(value),addr,_bad,"w","w","ir",1); break; \
case 4: __put_user_asm(((u32)(value),addr,_bad,"l","k","ir",1); break; \
case 8: __put_user_asm(((u64)(value),addr,_bad,"q","","ir",1); break; \
default: __put_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
})
#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; \
})
#define store_deref(size, addr, value) \
({ \
int _bad = 0; \
switch (size) \
{ \
case 1: __put_user_asm(((u8)(value),addr,_bad,"stb",1); break; \
case 2: __put_user_asm(((u16)(value),addr,_bad,"sth",1); break; \
case 4: __put_user_asm(((u32)(value),addr,_bad,"stw",1); break; \
case 8: __put_user_asm(((u64)(value),addr,_bad,"std",1); break; \
default: __put_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
})
#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; \
})
#define store_deref(size, addr, value) \
({ \
int _bad = 0; \
switch (size) \
{ \
case 1: __put_user_asm(((u8)(value),addr,_bad,"stb"); break; \
case 2: __put_user_asm(((u16)(value),addr,_bad,"sth"); break; \
case 4: __put_user_asm(((u32)(value),addr,_bad,"stw"); break; \
case 8: __put_user_asm2(((u64)(value),addr,_bad); break; \
default: __put_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
})
#endif
#define deref_string(dst, addr, maxbytes) \
({ \
uintptr_t _addr; \
size_t _len; \
unsigned char _c; \
char *_d = (dst); \
for (_len = (maxbytes), _addr = (addr); \
_len > 1 && (_c = deref (1, _addr)) != '\0'; \
--_len, ++_addr) \
*_d++ = _c; \
*_d = '\0'; \
(dst); \
})
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