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Refactorization of ESIL code generation for x86 instructions (new files)

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Gonzalo J. Carracedo 2013-11-19 00:15:21 +01:00 committed by pancake
parent 24cddb1ad6
commit 3736b218b2
2 changed files with 113 additions and 0 deletions
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79
libr/anal/p/esil_x86_udis.c Normal file
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/* radare - LGPL - Copyright 2009-2013 - nibble, pancake */
#include <r_lib.h>
#include <r_types.h>
#include <r_anal.h>
#include <r_util.h>
#include "udis86/types.h"
#include "udis86/extern.h"
#include "udis86/esil.h"
UDIS86_ESIL (nop, ",");
UDIS86_ESIL (jo, "?of,%s=%s", info->pc, dst);
UDIS86_ESIL (jno, "?!of,%s=%s", info->pc, dst);
UDIS86_ESIL (jb, "?cf,%s=%s", info->pc, dst);
UDIS86_ESIL (jae, "?cf,%s=%s", info->pc, dst);
UDIS86_ESIL (jz, "?zf,%s=%s", info->pc, dst);
UDIS86_ESIL (jnz, "?!zf,%s=%s", info->pc, dst);
UDIS86_ESIL (ja, "?!cf&!zf,%s=%s", info->pc, dst);
UDIS86_ESIL (jbe, "?cf&zf,%s=%s", info->pc, dst);
UDIS86_ESIL (js, "?sf,%s=%s", info->pc, dst);
UDIS86_ESIL (jns, "?!sf,%s=%s", info->pc, dst);
UDIS86_ESIL (jp, "?pf,%s=%s", info->pc, dst);
UDIS86_ESIL (jnp, "?!pf,%s=%s", info->pc, dst);
UDIS86_ESIL (jl, "?sf^of,%s=%s", info->pc, dst);
UDIS86_ESIL (jge, "?sf^!of,%s=%s", info->pc, dst);
UDIS86_ESIL (jle, "?(sf^of)|zf,%s=%s", info->pc, dst);
UDIS86_ESIL (jg, "?(sf^!of)&!zf,%s=%s", info->pc, dst);
UDIS86_ESIL (jcxz, "?cx==0,%s=%s", info->pc, dst);
UDIS86_ESIL (jecxz, "?ecx==0,%s=%s", info->pc, dst);
UDIS86_ESIL (jrcxz, "?rcx==0,%s=%s", info->pc, dst);
UDIS86_ESIL (jmp, "%s=%s", info->pc, dst);
UDIS86_ESIL (call, "%s-=%d,%d[%s]=%s,%s=%s", info->sp, info->regsz, info->regsz, info->sp, info->pc, info->pc, dst);
UDIS86_ESIL (shl, "cf=%s&(1<<%d-%s),%s<<=%s,zf=%s==0", dst, info->regsz * 8, src, dst, src, dst);
UDIS86_ESIL (rol, "cf=%s&(1<<%s),%s>>=%s,zf=%s==0", dst, src, dst, src, dst);
UDIS86_ESIL (ror, "cf=%s&(1<<%d-%s),%s<<<=%s,zf=%s==0", dst, info->regsz * 8, src, dst, src, dst);
UDIS86_ESIL (add, "cf=(%s+%s)<%s|(%s+%s)<%s,of=!((%s^%s)>>%d)&(((%s+%s)^%s)>>%d),%s+=%s,zf=%s==0,sf=%s>>%d", dst, src, dst, dst, src, src, dst, src, info->bits - 1, dst, src, src, info->bits - 1, dst, src, dst, dst, info->bits - 1);
UDIS86_ESIL (inc, "of=(%s^(%s+1))>>%d,%s++,zf=%s==0,sf=%s>>%d", dst, dst, info->bits - 1, dst, dst, dst, info->bits - 1);
UDIS86_ESIL (sub, "cf=%s<%s,of=!((%s^%s)>>%d)&(((%s+%s)^%s)>>%d),%s-=%s,zf=%s==0,sf=%s>>%d", dst, src, dst, src, info->bits - 1, dst, src, src, info->bits - 1, dst, src, dst, dst, info->bits - 1);
UDIS86_ESIL (dec, "of=(%s^(%s-1))>>%d,%s--,zf=%s==0,sf=%s>>%d", dst, dst, info->bits - 1, dst, dst, dst, info->bits - 1);
UDIS86_ESIL (cmp, "cf=%s<%s,zf=%s==%s", dst, src, dst, src);
UDIS86_ESIL (xor, "%s^=%s,zf=%s==0,sf=%s>>%d,cf=0,of=0", dst, src, dst, dst, info->bits - 1);
UDIS86_ESIL (or, "%s|=%s,zf=%s==0,sf=%s>>%d,cf=0,of=0", dst, src, dst, dst, info->bits - 1);
UDIS86_ESIL (and, "%s&=%s,zf=%s==0,sf=%s>>%d,cf=0,of=0", dst, src, dst, dst, info->bits - 1);
UDIS86_ESIL (test, "zf=%s&%s==0,sf=%s>>%d,cf=0,of=0", dst, src, dst, info->bits - 1);
UDIS86_ESIL (syscall, "$");
UDIS86_ESIL (int, "$0x%"PFMT64x",%s+=%d", info->n, info->pc, info->oplen);
UDIS86_ESIL (lea, "%s=%s,%s+=%d", dst, src, info->pc, info->oplen);
UDIS86_ESIL (mov, "%s=%s,%s+=%d", dst, src, info->pc, info->oplen);
UDIS86_ESIL (push, "%s-=%d,%d[%s]=%s,%s+=%d", info->sp, info->regsz, info->regsz, info->sp, dst, info->pc, info->oplen);
UDIS86_ESIL (pop, "%s=%d[%s],%s+=%d,%s+=%d", dst, info->regsz, info->sp, info->sp, info->regsz, info->pc, info->oplen);
UDIS86_ESIL (leave, "%s=%s,%s=%d[%s],%s+=%d,%s+=%d", info->sp, info->bp, src, info->regsz, info->sp, info->sp, info->regsz, info->pc, info->oplen);
UDIS86_ESIL (ret, "%s=%d[%s],%s+=%d", info->pc, info->regsz, info->sp, info->sp, info->regsz);
#define OP(args, inst) [JOIN (UD_I, inst)] = {args, UDIS86_ESIL_HANDLER (inst)}
/* This is the fastest way I can think about to implement this list of handlers */
UDis86Esil udis86_esil_callback_table[904] =
{
OP (0, nop), OP (1, jo), OP (1, jno), OP (1, jb), OP (1, jae),
OP (1, jz), OP (1, jnz), OP (1, ja), OP (1, jbe), OP (1, js),
OP (1, jns), OP (1, jp), OP (1, jnp), OP (1, jl), OP (1, jge),
OP (1, jle), OP (1, jg), OP (1, jcxz), OP (1, jecxz), OP (1, jrcxz),
OP (1, jmp), OP (1, call), OP (2, shl), OP (2, rol), OP (2, ror),
OP (2, add), OP (1, inc), OP (2, sub), OP (1, dec), OP (2, cmp),
OP (2, xor), OP (2, or), OP (2, and), OP (2, test), OP (0, syscall),
OP (1, int), OP (2, lea), OP (2, mov), OP (1, push), OP (1, pop),
OP (0, leave), OP (0, ret)
};
UDis86Esil *
udis86_esil_get_handler (enum ud_mnemonic_code code)
{
if (udis86_esil_callback_table[code].callback == NULL)
return NULL;
return udis86_esil_callback_table + code;
}

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shlr/udis86/esil.h Normal file
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#ifndef _UDIS86_ESIL_H
#define _UDIS86_ESIL_H
/* This may be useful for other architectures */
#define esilprintf(op, fmt, arg...) snprintf (op->esil, sizeof (op->esil) - 3, fmt, ##arg)
#define UDIS86_ESIL_ARGUMENTS const UDis86OPInfo *info, RAnalOp *op, const char *dst, const char *src, const char *src2
typedef struct udis86_op_info {
ut64 n;
int bits;
ut64 bitmask;
int regsz;
int oplen;
const char *pc;
const char *sp;
const char *bp;
} UDis86OPInfo;
typedef struct udis86_esil_t {
int argc;
void (*callback) (UDIS86_ESIL_ARGUMENTS);
} UDis86Esil;
#define _JOIN(a1, a2) a1 ## a2
#define JOIN(a1, a2) _JOIN (a1, a2)
#define UDIS86_ESIL_HANDLER(name) JOIN (JOIN (__x86_, name), _to_esil)
#define UDIS86_ESIL_PROTO(name) void UDIS86_ESIL_HANDLER (name) (UDIS86_ESIL_ARGUMENTS)
#define UDIS86_ESIL(name, fmt, arg...) UDIS86_ESIL_PROTO (name) { esilprintf (op, fmt, ##arg); }
UDis86Esil *udis86_esil_get_handler (enum ud_mnemonic_code);
#endif /* _UDIS86_ESIL_H */