no better context is available */
static module *list_mod = NULL;
-EXTERN_STACK_DCL(callStack,function *,1024);
-
#if defined(__APPLE__) && defined(__MACH__)
static char *copying=
{" GNU GENERAL PUBLIC LICENSE Version 2"};
/*-----------------------------------------------------------------*/
/* discoverContext - find out the current context of the bp */
/*-----------------------------------------------------------------*/
-context *discoverContext (unsigned addr, function *func)
+context *discoverContext (unsigned addr, function *func, context *ctxt)
{
module *mod = NULL;
int line = 0;
fprintf(stderr, "addr 0x%x in no module/function (runtime env?)\n",addr);
return NULL;
}
- currCtxt->func = func;
- currCtxt->addr = addr;
- currCtxt->modName = mod->name;
- currCtxt->cline = func->exitline;
+ ctxt->func = func;
+ ctxt->addr = addr;
+ ctxt->modName = mod->name;
+ ctxt->cline = func->exitline;
}
else
{
- currCtxt->func = func;
- currCtxt->addr = func->laddr = addr;
- currCtxt->modName = func->modName;
+ ctxt->func = func;
+ ctxt->addr = func->laddr = addr;
+ ctxt->modName = func->modName;
/* find the c line number */
if(applyToSet(func->cfpoints,lineAtAddr,addr,
- &line,&currCtxt->block,&currCtxt->level))
- currCtxt->cline = func->lline = line;
+ &line,&ctxt->block,&ctxt->level))
+ ctxt->cline = func->lline = line;
else if(applyToSet(func->cfpoints,lineNearAddr,addr,
- &line,&currCtxt->block,&currCtxt->level))
- currCtxt->cline = func->lline = line;
+ &line,&ctxt->block,&ctxt->level))
+ ctxt->cline = func->lline = line;
else
- currCtxt->cline = -1;
+ ctxt->cline = -1;
}
/* find the asm line number */
line = 0;
if (applyToSet(func->afpoints,lineAtAddr,addr,
&line,NULL,NULL))
- currCtxt->asmline = line;
+ ctxt->asmline = line;
else
- currCtxt->asmline = -1;
+ ctxt->asmline = -1;
+
+ return ctxt;
+}
+
+#define IS_BRANCH 1
+#define IS_CALL 2
+#define IS_RET 4
+#define IS_ADDR11 8
+#define IS_ADDR16 16
+#define IS_COND 32
+
+struct instruction {
+ unsigned char flags;
+ unsigned char len;
+};
+
+static struct instruction instructions[] = {
+ [0x28] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x29] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2A] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2B] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2C] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2D] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2E] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x2F] = { .flags = 0, .len = 1 }, /* ADD A,Rn */
+ [0x25] = { .flags = 0, .len = 2 }, /* ADD A,direct */
+ [0x26] = { .flags = 0, .len = 1 }, /* ADD A,@Ri */
+ [0x27] = { .flags = 0, .len = 1 }, /* ADD A,@Ri */
+ [0x24] = { .flags = 0, .len = 2 }, /* ADD A,#data */
+
+ [0x38] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x39] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3A] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3B] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3C] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3D] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3E] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x3F] = { .flags = 0, .len = 1 }, /* ADDC A,Rn */
+ [0x35] = { .flags = 0, .len = 2 }, /* ADDC A,direct */
+ [0x36] = { .flags = 0, .len = 1 }, /* ADDC A,@Ri */
+ [0x37] = { .flags = 0, .len = 1 }, /* ADDC A,@Ri */
+ [0x34] = { .flags = 0, .len = 2 }, /* ADDC A,#data */
+
+ [0x98] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x99] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9A] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9B] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9C] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9D] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9E] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x9F] = { .flags = 0, .len = 1 }, /* SUBB A,Rn */
+ [0x95] = { .flags = 0, .len = 2 }, /* SUBB A,direct */
+ [0x96] = { .flags = 0, .len = 1 }, /* SUBB A,@Ri */
+ [0x97] = { .flags = 0, .len = 1 }, /* SUBB A,@Ri */
+ [0x94] = { .flags = 0, .len = 2 }, /* SUBB A,#data */
+
+ [0x08] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x09] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0A] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0B] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0C] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0D] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0E] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x0F] = { .flags = 0, .len = 1 }, /* INC Rn */
+ [0x05] = { .flags = 0, .len = 2 }, /* INC direct */
+ [0x06] = { .flags = 0, .len = 1 }, /* INC @Ri */
+ [0x07] = { .flags = 0, .len = 1 }, /* INC @Ri */
+ [0x04] = { .flags = 0, .len = 1 }, /* INC A */
+
+ [0xA3] = { .flags = 0, .len = 1 }, /* INC DPTR */
+
+ [0x18] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x19] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1A] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1B] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1C] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1D] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1E] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x1F] = { .flags = 0, .len = 1 }, /* DEC Rn */
+ [0x15] = { .flags = 0, .len = 2 }, /* DEC direct */
+ [0x16] = { .flags = 0, .len = 1 }, /* DEC @Ri */
+ [0x17] = { .flags = 0, .len = 1 }, /* DEC @Ri */
+ [0x14] = { .flags = 0, .len = 1 }, /* DEC A */
+
+ [0xA4] = { .flags = 0, .len = 1 }, /* MUL AB */
+ [0x84] = { .flags = 0, .len = 1 }, /* DIV AB */
+
+ [0xD4] = { .flags = 0, .len = 1 }, /* DA A */
+
+ [0x58] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x59] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5A] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5B] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5C] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5D] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5E] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x5F] = { .flags = 0, .len = 1 }, /* ANL A,Rn */
+ [0x55] = { .flags = 0, .len = 2 }, /* ANL A,direct */
+ [0x56] = { .flags = 0, .len = 1 }, /* ANL A,@Ri */
+ [0x57] = { .flags = 0, .len = 1 }, /* ANL A,@Ri */
+ [0x54] = { .flags = 0, .len = 2 }, /* ANL A,#data */
+ [0x52] = { .flags = 0, .len = 2 }, /* ANL direct,A */
+ [0x53] = { .flags = 0, .len = 3 }, /* ANL direct,#data */
+
+ [0x48] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x49] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4A] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4B] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4C] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4D] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4E] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x4F] = { .flags = 0, .len = 1 }, /* ORL A,Rn */
+ [0x45] = { .flags = 0, .len = 2 }, /* ORL A,direct */
+ [0x46] = { .flags = 0, .len = 1 }, /* ORL A,@Ri */
+ [0x47] = { .flags = 0, .len = 1 }, /* ORL A,@Ri */
+ [0x44] = { .flags = 0, .len = 2 }, /* ORL A,#data */
+ [0x42] = { .flags = 0, .len = 2 }, /* ORL direct,A */
+ [0x43] = { .flags = 0, .len = 3 }, /* ORL direct,#data */
+
+ [0x68] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x69] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6A] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6B] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6C] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6D] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6E] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x6F] = { .flags = 0, .len = 1 }, /* XRL A,Rn */
+ [0x65] = { .flags = 0, .len = 2 }, /* XRL A,direct */
+ [0x66] = { .flags = 0, .len = 1 }, /* XRL A,@Ri */
+ [0x67] = { .flags = 0, .len = 1 }, /* XRL A,@Ri */
+ [0x64] = { .flags = 0, .len = 2 }, /* XRL A,#data */
+ [0x62] = { .flags = 0, .len = 2 }, /* XRL direct,A */
+ [0x63] = { .flags = 0, .len = 3 }, /* XRL direct,#data */
+
+ [0xE4] = { .flags = 0, .len = 1 }, /* CLR A */
+ [0xF4] = { .flags = 0, .len = 1 }, /* CPL A */
+
+ [0x23] = { .flags = 0, .len = 1 }, /* RL A */
+ [0x33] = { .flags = 0, .len = 1 }, /* RLC A */
+ [0x03] = { .flags = 0, .len = 1 }, /* RR A */
+ [0x13] = { .flags = 0, .len = 1 }, /* RRC A */
+
+ [0xC4] = { .flags = 0, .len = 1 }, /* SWAP A */
+
+ [0xE8] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xE9] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xEA] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xEB] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xEC] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xED] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xEE] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xEF] = { .flags = 0, .len = 1 }, /* MOV A,Rn */
+ [0xE5] = { .flags = 0, .len = 2 }, /* MOV A,direct */
+ [0xE6] = { .flags = 0, .len = 1 }, /* MOV A,@Ri */
+ [0xE7] = { .flags = 0, .len = 1 }, /* MOV A,@Ri */
+ [0x74] = { .flags = 0, .len = 2 }, /* MOV A,#data */
+
+ [0xF8] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xF9] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFA] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFB] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFC] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFD] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFE] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+ [0xFF] = { .flags = 0, .len = 1 }, /* MOV Rn,A */
+
+ [0xA8] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xA9] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAA] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAB] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAC] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAD] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAE] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+ [0xAF] = { .flags = 0, .len = 2 }, /* MOV Rn,direct */
+
+ [0x78] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x79] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7A] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7B] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7C] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7D] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7E] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+ [0x7F] = { .flags = 0, .len = 2 }, /* MOV Rn,#data */
+
+ [0xF5] = { .flags = 0, .len = 2 }, /* MOV direct,A */
+ [0x88] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x89] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8A] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8B] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8C] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8D] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8E] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x8F] = { .flags = 0, .len = 2 }, /* MOV direct,Rn */
+ [0x85] = { .flags = 0, .len = 3 }, /* MOV direct,direct */
+ [0x86] = { .flags = 0, .len = 2 }, /* MOV direct,@Ri */
+ [0x87] = { .flags = 0, .len = 2 }, /* MOV direct,@Ri */
+ [0x75] = { .flags = 0, .len = 3 }, /* MOV direct,#data */
+
+ [0xF6] = { .flags = 0, .len = 1 }, /* MOV @Ri,A */
+ [0xF7] = { .flags = 0, .len = 1 }, /* MOV @Ri,A */
+ [0xA6] = { .flags = 0, .len = 2 }, /* MOV @Ri,direct */
+ [0xA7] = { .flags = 0, .len = 2 }, /* MOV @Ri,direct */
+ [0x76] = { .flags = 0, .len = 2 }, /* MOV @Ri,#data */
+ [0x77] = { .flags = 0, .len = 2 }, /* MOV @Ri,#data */
+
+
+ [0x90] = { .flags = 0, .len = 3 }, /* MOV DPTR,#data16 */
+
+ [0x93] = { .flags = 0, .len = 1 }, /* MOVC A,@A+DPTR */
+ [0x83] = { .flags = 0, .len = 1 }, /* MOVC A,@A+PC */
+
+ [0xE2] = { .flags = 0, .len = 1 }, /* MOVX A,@Ri */
+ [0xE3] = { .flags = 0, .len = 1 }, /* MOVX A,@Ri */
+ [0xE0] = { .flags = 0, .len = 1 }, /* MOVX A,@DPTR */
+ [0xF2] = { .flags = 0, .len = 1 }, /* MOVX @Ri,A */
+ [0xF3] = { .flags = 0, .len = 1 }, /* MOVX @Ri,A */
+ [0xF0] = { .flags = 0, .len = 1 }, /* MOVX @DPTR,A */
+
+ [0xC0] = { .flags = 0, .len = 2 }, /* PUSH direct */
+ [0xD0] = { .flags = 0, .len = 2 }, /* POP direct */
+ [0xF5] = { .flags = 0, .len = 2 }, /* MOV direct,A */
+ [0xF5] = { .flags = 0, .len = 2 }, /* MOV direct,A */
+ [0xF5] = { .flags = 0, .len = 2 }, /* MOV direct,A */
+ [0xF5] = { .flags = 0, .len = 2 }, /* MOV direct,A */
+
+ [0xC8] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xC9] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCA] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCB] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCC] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCD] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCE] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xCF] = { .flags = 0, .len = 1 }, /* XCH A,Rn */
+ [0xC5] = { .flags = 0, .len = 2 }, /* XCH A,direct */
+ [0xC6] = { .flags = 0, .len = 1 }, /* XCH A,@Ri */
+ [0xC7] = { .flags = 0, .len = 1 }, /* XCH A,@Ri */
+ [0xD6] = { .flags = 0, .len = 1 }, /* XCHD A,@Ri */
+ [0xD7] = { .flags = 0, .len = 1 }, /* XCHD A,@Ri */
+
+ [0x11] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0x31] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0x51] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0x71] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0x91] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0xb1] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0xd1] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0xf1] = { .flags = IS_CALL, .len = 2 }, /* ACALL addr11 */
+ [0x12] = { .flags = IS_CALL, .len = 3 }, /* LCALL addr16 */
+
+ [0x22] = { .flags = IS_RET, .len = 1 }, /* RET */
+ [0x32] = { .flags = IS_RET, .len = 1 }, /* RETI */
+
+ [0x01] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0x21] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0x41] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0x61] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0x81] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0xa1] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0xc1] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0xe1] = { .flags = IS_BRANCH, .len = 2 }, /* AJMP addr11 */
+ [0x02] = { .flags = IS_BRANCH, .len = 3 }, /* LJMP addr16 */
+
+ [0x80] = { .flags = IS_BRANCH, .len = 2 }, /* SJMP rel */
+
+ [0x73] = { .flags = IS_BRANCH, .len = 1 }, /* JMP @A+DPTR */
+
+ [0x60] = { .flags = IS_BRANCH, .len = 2 }, /* JZ rel */
+ [0x70] = { .flags = IS_BRANCH, .len = 2 }, /* JNZ rel */
+ [0x40] = { .flags = IS_BRANCH, .len = 2 }, /* JC rel */
+ [0x50] = { .flags = IS_BRANCH, .len = 2 }, /* JNC rel */
+ [0x20] = { .flags = IS_BRANCH, .len = 3 }, /* JB bit,rel */
+ [0x30] = { .flags = IS_BRANCH, .len = 3 }, /* JNB bit,rel */
+ [0x10] = { .flags = IS_BRANCH, .len = 3 }, /* JBC bit,direct rel */
+
+ [0xB5] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE A,direct rel */
+ [0xB4] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE A,#data rel */
+ [0xB8] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xB9] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBA] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBB] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBC] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBD] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBE] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xBF] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE Rn,#data rel */
+ [0xB6] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE @Ri,direct rel */
+ [0xB7] = { .flags = IS_BRANCH, .len = 3 }, /* CJNE @Ri,direct rel */
+
+ [0xD8] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xD9] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDA] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDB] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDC] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDD] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDE] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xDF] = { .flags = IS_BRANCH, .len = 2 }, /* DNJZ Rn,rel */
+ [0xD5] = { .flags = IS_BRANCH, .len = 3 }, /* DNJZ direct,rel */
+
+ [0x00] = { .flags = 0, .len = 1 }, /* NOP */
+
+ [0xC3] = { .flags = 0, .len = 1 }, /* CLR C */
+ [0xC2] = { .flags = 0, .len = 2 }, /* CLR bit */
+ [0xD3] = { .flags = 0, .len = 1 }, /* SETB C */
+ [0xD2] = { .flags = 0, .len = 2 }, /* SETB bit */
+
+ [0xB3] = { .flags = 0, .len = 1 }, /* CPL C */
+ [0xB2] = { .flags = 0, .len = 2 }, /* CPL bit */
+
+ [0x82] = { .flags = 0, .len = 2 }, /* ANL C,bit */
+ [0xB0] = { .flags = 0, .len = 2 }, /* ANL C,/bit */
+ [0x72] = { .flags = 0, .len = 2 }, /* ORL C,bit */
+ [0xA0] = { .flags = 0, .len = 2 }, /* ORL C,/bit */
+
+ [0xA2] = { .flags = 0, .len = 2 }, /* MOV C,bit */
+ [0x92] = { .flags = 0, .len = 2 }, /* MOV bit,C */
+
+ [0xA5] = { .flags = 0, .len = 1 }, /* TRAP */
+};
+
+#define RET 0x22
+#define RETI 0x32
+
+#define PUSH 0xC0
+#define POP 0xD0
+#define MOV_direct_A 0xF5
+#define MOV_A_direct 0xE5
+#define ADD_A_imm 0x24
+#define SP 0x81
+#define RET 0x22
+#define RETI 0x32
+#define LJMP_addr16 0x02
+#define SJMP_rel 0x80
+
+static int stack_change(unsigned addr)
+{
+ unsigned char insn;
+ unsigned char direct;
+
+ insn = simGetValue(addr, 'C', 1);
+ switch (insn) {
+ case PUSH:
+ return 1;
+ case POP:
+ return -1;
+ case MOV_direct_A:
+ direct = simGetValue(addr+1, 'C', 1);
+ if (direct == SP) {
+ unsigned char add_insn;
+ unsigned char add_direct;
+
+ add_insn = simGetValue(addr-2, 'C', 1);
+ if (add_insn == ADD_A_imm) {
+ add_direct = simGetValue(addr-1, 'C', 1);
+ return (signed char) add_direct;
+ }
+ }
+ break;
+ case RET:
+ return 0;
+ case RETI:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static void
+do_indent(int indent);
+
+#if 1
+#define DPC(x)
+#else
+#define DPC(x) do { do_indent(indent); printf x; } while (0);
+#endif
+
+static int pc_change(unsigned addr, unsigned addrs[2], int indent)
+{
+ unsigned char insn;
+ unsigned new_addr;
+ signed char delta;
+ int len;
+
+ insn = simGetValue(addr, 'C', 1);
+ if (instructions[insn].flags & IS_RET)
+ return 0;
+
+ if (!(instructions[insn].flags & IS_BRANCH)) {
+ addrs[0] = addr + instructions[insn].len;
+ return 1;
+ }
+
+ if (insn == LJMP_addr16) {
+ addrs[0] = ((simGetValue(addr+1, 'C', 1) << 8) |
+ (simGetValue(addr+2, 'C', 1)));
+ DPC(("0x%04x LJMP 0x%04x\n", addr, addrs[0]));
+ return 1;
+ }
+
+ /* AJMP */
+ if ((insn & 0x1f) == 0x01) {
+ unsigned char direct = simGetValue(addr+1,'C', 1);
+
+ addrs[0] = ((addr + 2) & 0xf800) | ((insn & 0xe0) << 3) | direct;
+ DPC(("0x%04x AJMP 0x%04x\n", addr, addrs[0]));
+ return 1;
+ }
+
+ /* otherwise, relative branch */
+ len = instructions[insn].len;
+
+ delta = (signed char) simGetValue(addr+len-1, 'C', 1);
+ new_addr = (addr + len) + delta;
+
+ if (insn == SJMP_rel || (addr + len) == new_addr) {
+ addrs[0] = new_addr;
+ DPC(("0x%04x SJMP 0x%04x\n", addr, addrs[0]));
+ return 1;
+ }
+ addrs[0] = (addr + len) & 0xffff;
+ addrs[1] = new_addr & 0xffff;
+
+ DPC(("0x%04x SJMP 0x%04x 0x%04x\n", addr, addrs[0], addrs[1]));
+ return 2;
+}
+
+#define SEARCH_LOOP 0x8000
+#define SEARCH_EXPIRED 0x8001
+
+#define MAX_STACK_BRANCH_TRACE 8192
+static unsigned stack_branch_trace[MAX_STACK_BRANCH_TRACE];
+
+static int
+been_here(unsigned pc, int ntrace)
+{
+ int t;
+
+ for (t = 0; t < ntrace; t++)
+ if (stack_branch_trace[t] == pc)
+ return 1;
+ return 0;
+}
+
+#define MAX_SEARCH 100
+
+#define indent (MAX_SEARCH - search)
+
+static int
+stack_depth(unsigned pc, int search, int ntrace)
+{
+ unsigned new_pc[2];
+ int d[2];
+ int n;
+ int s;
+ int change;
+
+ change = 0;
+ for (;;) {
+ change += stack_change(pc);
+ n = pc_change(pc, new_pc, MAX_SEARCH - search);
+ if (n == 0)
+ return change;
+ if (n != 1)
+ break;
+ if (new_pc[0] <= pc) {
+ if (been_here(pc, ntrace)) {
+ DPC(("0x%04x loop 1\n", pc));
+ return SEARCH_LOOP;
+ }
+ stack_branch_trace[ntrace++] = pc;
+ }
+ pc = new_pc[0];
+ }
+
+ if (search == 0) {
+ DPC(("0x%04x max depth\n", pc));
+ return SEARCH_EXPIRED;
+ }
+
+ if (been_here(pc, ntrace))
+ {
+ DPC(("0x%04x loop 2\n", pc));
+ return SEARCH_LOOP;
+ }
+ stack_branch_trace[ntrace++] = pc;
+
+ for (s = 0; s < search - 1; s++) {
+ int i, j, d;
+
+ i = 0;
+ while (i < n) {
+ d = stack_depth(new_pc[i], search-1, ntrace);
+ if (d == SEARCH_LOOP) {
+ for (j = i; j < n-1; j++)
+ new_pc[j] = new_pc[j+1];
+ n--;
+ continue;
+ }
+ if (d != SEARCH_EXPIRED) {
+ DPC(("success %d\n", d + change));
+ return d + change;
+ }
+ i++;
+ }
+ if (n == 0) {
+ DPC(("0x%04x loop 3\n", pc));
+ return SEARCH_LOOP;
+ }
+ }
+ DPC(("search expired\n"));
+ return SEARCH_EXPIRED;
+}
+
+#undef indent
+
+unsigned int
+stack_start(void)
+{
+ symbol *start_stack = symLookup("__start_stack", NULL);
+ if (start_stack)
+ return start_stack->addr;
+ return 0x8;
+}
+
+static int
+frameStart(unsigned int *bpp, unsigned int *pcp)
+{
+ unsigned int bp;
+ unsigned int sp;
+ unsigned int pc;
+ int depth;
+ symbol *bp_sym;
+
+ pc = simGetPC();
+ sp = simGetValue(0x81,'I',1);
+ depth = stack_depth(pc, MAX_SEARCH, 0);
+ if (depth == SEARCH_LOOP || depth == SEARCH_EXPIRED)
+ bp = 0;
+ else
+ bp = sp + depth;
+ *bpp = bp;
+ *pcp = pc;
+ return 1;
+}
+
+static int
+frameNext(unsigned int *bpp, unsigned int *pcp)
+{
+ unsigned int bp = *bpp;
+ unsigned int pc;
+ int depth;
+ symbol *start_stack;
- return currCtxt ;
+ if (bp < stack_start())
+ return 0;
+ pc = simGetValue(bp - 1, 'B', 2);
+ if (pc == 0xffff)
+ return 0;
+ depth = stack_depth(pc, MAX_SEARCH, 0);
+ if (depth == SEARCH_LOOP || depth == SEARCH_EXPIRED)
+ bp = 0;
+ else
+ bp = bp - 2 + depth;
+ *bpp = bp;
+ *pcp = pc;
+ return 1;
}
+static int running = 0;
+
+static int is_running(void) {
+ return running;
+}
+
+static int set_running(int run) {
+ running = run;
+}
/*-----------------------------------------------------------------*/
/* simGo - send 'go' cmd to simulator and wait till a break occurs */
userinterrupt = 0;
return;
}
+#if 0
if ( gaddr == 0 )
{
function *func = NULL;;
if (applyToSet(functions,funcInAddr,gaddr,&func))
STACK_PUSH(callStack,func);
}
+#endif
addr = simGoTillBp (gaddr);
/* got the pc for the break point now first
discover the program context i.e. module, function
linenumber of the source etc, etc etc */
currentFrame = 0;
- ctxt = discoverContext (addr, NULL);
+ ctxt = discoverContext (addr, NULL, currCtxt);
/* dispatch all the break point call back functions */
rv = dispatchCB (addr,ctxt);
{
char *bp;
function *func = NULL;
- if (STACK_EMPTY(callStack))
+ if (!is_running())
{
fprintf(stdout,"The program is not running.\n");
return 0;
/*-----------------------------------------------------------------*/
int cmdContinue (char *s, context *cctxt)
{
- if (STACK_EMPTY(callStack)) {
+ if (!is_running()) {
fprintf(stdout,"The program is not being run.\n");
return 0;
}
int cmdStepi (char *s, context *cctxt)
{
- if (0 /*STACK_EMPTY(callStack)*/)
+ if (!is_running())
fprintf(stdout,"The program is not being run.\n");
else
{
return 0;
}
+static unsigned line_start_addr(context *ctx, int line)
+{
+ function *func = ctx->func;
+ module *mod = func->mod;
+ unsigned addr;
+ int nlines;
+
+ if (srcMode == SRC_CMODE)
+ nlines = mod->ncLines;
+ else
+ nlines = mod->nasmLines;
+
+ do {
+ if (srcMode == SRC_CMODE)
+ addr = mod->cLines[line]->addr;
+ else
+ addr = mod->asmLines[line]->addr;
+ ++line;
+ } while (addr == 0x7fffffff && line < nlines);
+ if (addr == 0x7fffffff)
+ addr = func->sym->eaddr;
+ return addr;
+}
+
+static unsigned line_end_addr(context *ctx, int line)
+{
+ function *func = ctx->func;
+ module *mod = func->mod;
+ int next_line, nlines;
+ unsigned start_addr = line_start_addr(ctx, line);
+ unsigned next_addr = func->sym->eaddr + 1;
+ unsigned addr;
+
+ if (srcMode == SRC_CMODE)
+ nlines = mod->ncLines;
+ else
+ nlines = mod->nasmLines;
+ for (next_line = 0; next_line < nlines; next_line++) {
+ if (next_line == line)
+ continue;
+ if (srcMode == SRC_CMODE)
+ addr = mod->cLines[next_line]->addr;
+ else
+ addr = mod->asmLines[next_line]->addr;
+ if (start_addr < addr && addr < next_addr)
+ next_addr = addr;
+ }
+ return next_addr;
+}
+
+BP_CALLBACK(step_bp_callback)
+{
+ deleteSTEPbp();
+ return 1;
+}
+
+static int do_step(context *ctx, int into)
+{
+ function *func = ctx->func;
+ module *mod = func->mod;
+ srcLine **lines;
+ srcLine *line;
+ int nlines;
+ int start, end;
+ int start_l;
+ unsigned len;
+ unsigned start_addr, end_addr, addr;
+ unsigned char insn;
+ unsigned char flags;
+
+ if (srcMode == SRC_CMODE) {
+ lines = mod->cLines;
+ nlines = mod->ncLines;
+ start_l = ctx->cline;
+ } else {
+ lines = mod->asmLines;
+ nlines = mod->nasmLines;
+ start_l = ctx->asmline;
+ }
+ if (start_l == -1)
+ return 0;
+ flags = IS_BRANCH|IS_RET;
+ if (into)
+ flags |= IS_CALL;
+ line = lines[start_l];
+ start = line_start_addr(ctx, start_l);
+ end = line_end_addr(ctx, start_l);
+
+ while (start <= ctx->addr && ctx->addr < end) {
+ insn = 0xff;
+ for (addr = ctx->addr; addr < end; addr += len) {
+ insn = simGetValue(addr, 'C', 1);
+ if (instructions[insn].flags & flags)
+ break;
+ len = instructions[insn].len;
+ if (len == 0) {
+ fprintf(stderr, "Unknown opcode 0x%02x\n", insn);
+ return 0;
+ }
+ }
+ if (addr != ctx->addr) {
+ setBreakPoint(addr, CODE, STEP,
+ step_bp_callback,
+ mod->name, start_l);
+ doingSteps = 1;
+ /* run to breakpoint */
+ simGo(-1);
+ doingSteps = 0;
+ }
+ /* step over instruction at breakpoint */
+ if (start <= ctx->addr && ctx->addr < end) {
+ doingSteps = 2;
+ simGo(2);
+ doingSteps = 0;
+ }
+ }
+ stepBpCB(ctx->addr, NULL, ctx);
+ showfull = 1;
+}
+
/*-----------------------------------------------------------------*/
/* cmdStep - single step thru C source file */
/*-----------------------------------------------------------------*/
{
function *func = NULL;
- if (STACK_EMPTY(callStack))
+ if (!is_running())
fprintf(stdout,"The program is not being run.\n");
- else {
- /* if we are @ the end of a function then set
- break points at execution points of the
- function in the call stack... */
- if (cctxt->addr == cctxt->func->sym->eaddr) {
- if ((func = STACK_PEEK(callStack))) {
- if (srcMode == SRC_CMODE)
- applyToSet (func->cfpoints,setStepEPBp,STEP,
- func->mod->c_name);
- else
- applyToSet (func->afpoints,setStepEPBp,STEP,
- func->mod->asm_name);
- }
- } else {
- /* set breakpoints at all function entry points
- and all exepoints of this functions & for
- all functions one up in the call stack */
-
- /* all function entry points */
- applyToSet(functions,setStepBp);
-
- if (srcMode == SRC_CMODE) {
- /* for all execution points in this function */
- applyToSet(cctxt->func->cfpoints,setStepEPBp,STEP,
- cctxt->func->mod->c_name);
-
- /* set a break point @ the current function's
- exit */
- setBreakPoint (cctxt->func->sym->eaddr, CODE, STEP ,
- stepBpCB, cctxt->func->mod->c_name,
- cctxt->func->exitline);
-
- /* now break point @ callers execution points */
- if ((func = STACK_PPEEK(callStack))) {
- applyToSet (func->cfpoints,setStepEPBp,STEP,
- func->mod->c_name);
- /* set bp @ callers exit point */
- setBreakPoint (func->sym->eaddr, CODE, STEP ,
- stepBpCB, func->mod->c_name,
- func->exitline);
- }
- } else {
- /* for all execution points in this function */
- applyToSet(cctxt->func->afpoints,setStepEPBp,STEP,
- cctxt->func->mod->asm_name);
-
- /* set a break point @ the current function's
- exit */
- setBreakPoint (cctxt->func->sym->eaddr, CODE, STEP ,
- stepBpCB, cctxt->func->mod->asm_name,
- cctxt->func->aexitline);
-
- /* now break point @ callers execution points */
- if ((func = STACK_PPEEK(callStack))) {
-
- applyToSet (func->afpoints,setStepEPBp,STEP,
- func->mod->asm_name);
-
- /* set bp @ callers exit point */
- setBreakPoint (func->sym->eaddr, CODE, STEP ,
- stepBpCB, func->mod->asm_name,
- func->aexitline);
- }
- }
- }
-
- doingSteps = 1;
- simGo(2);
- doingSteps = 0;
- showfull = 1;
- }
+ else
+ do_step(cctxt, 1);
return 0;
}
/*-----------------------------------------------------------------*/
int cmdNexti (char *s, context *cctxt)
{
- if (STACK_EMPTY(callStack))
+ if (!is_running())
fprintf(stdout,"The program is not being run.\n");
else
{
/* next is almost the same as step except we don't
we don't set break point for all function entry
points */
- if (STACK_EMPTY(callStack))
+ if (!is_running())
fprintf(stdout,"The program is not being run.\n");
- else {
- /* if we are @ the end of a function then set
- break points at execution points of the
- function in the call stack... */
- if (cctxt->addr == cctxt->func->sym->eaddr) {
- if ((func = STACK_PEEK(callStack))) {
- if (srcMode == SRC_CMODE)
- applyToSet (func->cfpoints,setStepEPBp,NEXT,
- func->mod->c_name);
- else
- applyToSet (func->afpoints,setStepEPBp,NEXT,
- func->mod->asm_name);
- }
- } else {
- if (srcMode == SRC_CMODE) {
- /* for all execution points in this function */
- applyToSet(cctxt->func->cfpoints,setNextEPBp,NEXT,
- cctxt->func->mod->c_name);
- /* set a break point @ the current function's
- exit */
- setBreakPoint (cctxt->func->sym->eaddr, CODE, NEXT ,
- nextBpCB, cctxt->func->mod->c_name,
- cctxt->func->exitline);
-
- /* now break point @ callers execution points */
- if ((func = STACK_PPEEK(callStack))) {
- applyToSet (func->cfpoints,setNextEPBp,NEXT ,
- func->mod->c_name);
- /* set bp @ callers exit point */
- setBreakPoint (func->sym->eaddr, CODE, NEXT ,
- stepBpCB, func->mod->c_name,
- func->exitline);
- }
- } else {
- /* for all execution points in this function */
- applyToSet(cctxt->func->afpoints,setNextEPBp,NEXT,
- cctxt->func->mod->asm_name);
- /* set a break point @ the current function's
- exit */
- setBreakPoint (cctxt->func->sym->eaddr, CODE, NEXT ,
- nextBpCB, cctxt->func->mod->asm_name,
- cctxt->func->aexitline);
-
- /* now break point @ callers execution points */
- if ((func = STACK_PPEEK(callStack))) {
- applyToSet (func->cfpoints,setNextEPBp,NEXT ,
- func->mod->asm_name);
- /* set bp @ callers exit point */
- setBreakPoint (func->sym->eaddr, CODE, NEXT ,
- stepBpCB, func->mod->asm_name,
- func->aexitline);
- }
- }
- }
- doingSteps = 1;
- simGo(1);
- doingSteps = 0;
- showfull = 1;
- }
+ else
+ do_step(cctxt, 0);
return 0;
}
int cmdRun (char *s, context *cctxt)
{
char buff[10];
- if (STACK_EMPTY(callStack)) {
+
+ if (!is_running()) {
fprintf(stdout,"Starting program\n");
if ( ! simactive )
{
}
}
showfull = 1;
+ set_running(1);
return 0;
}
{
function *func ;
int i = 0 ;
-
- STACK_STARTWALK(callStack) ;
- while ((func = STACK_WALK(callStack))) {
- Dprintf(D_break, ("break: infoStack: %s %p (%p)\n",func->sym->name, w_callStack,p_callStack));
-
- fprintf(stdout,"#%d 0x%08x in %s () at %s:%d\n",i++,
- func->laddr,func->sym->name,
- func->mod->c_name,func->lline+1);
+ context *ctx, my_context;
+ unsigned int bp, pc, addr = ctxt->addr;
+ int status;
+
+ for (status = frameStart(&bp,&pc); status; status = frameNext(&bp, &pc)) {
+ ctx = discoverContext(pc, NULL, &my_context);
+ if (ctx) {
+ func = ctx->func;
+ Dprintf(D_break, ("break: infoStack: %s 0x%02x\n",func->sym->name, bp));
+
+ fprintf(stdout,"#%d 0x%08x in %s () at %s:%d\n",i++,
+ pc,func->sym->name,
+ func->mod->c_name,func->lline+1);
+ } else {
+ fprintf(stdout,"#%d 0x%08x\n", i++, pc);
+ }
}
if ( !i )
fprintf(stdout,"no stack.\n");
infomode=0;
if ( func )
fprintf(stdout,"\032\032%s:%d:1:beg:0x%08x\n",
- func->mod->cfullname,
+ canonname(func->mod->cfullname),
llines,firstaddr);
else
showfull=1;
!applyToSet(functions,funcWithName,"main",&func))
return;
- discoverContext (func->sym->addr, func);
+ discoverContext (func->sym->addr, func, currCtxt);
}
function *needExtraMainFunction()
int i;
function *func = NULL;
function *lastfunc = NULL;
+ context *ctx, my_context;
+ unsigned int bp, pc;
+ int status;
if ( currentFrame < 0 )
{
fprintf(stdout,"Bottom (i.e., innermost) frame selected; you cannot go down.\n");
return;
}
- STACK_STARTWALK(callStack) ;
- for ( i = 0; i <= currentFrame ; i++ )
+ i = 0;
+ for (status = frameStart(&bp, &pc); status; status = frameNext(&bp, &pc))
{
- func = STACK_WALK(callStack);
- if ( !func )
- {
- currentFrame = i-1;
- fprintf(stdout,"Initial frame selected; you cannot go up.\n");
- return;
- }
+ if (i >= currentFrame)
+ break;
+ i++;
+ }
+ if (i < currentFrame) {
+ currentFrame = i;
+ fprintf(stdout,"Initial frame selected; you cannot go up.\n");
+ return;
+ }
+ ctx = discoverContext(pc, NULL, &my_context);
+ if (ctx && (func = ctx->func)) {
+ fprintf(stdout,"#%d 0x%08x in %s () at %s:%d\n",
+ currentFrame,pc,func->sym->name,func->mod->c_name,func->lline+1);
+ fprintf(stdout,"\032\032%s:%d:1:beg:0x%08x\n",
+ canonname(func->mod->cfullname),func->lline+1,func->laddr);
+ } else {
+ fprintf(stdout,"#%d 0x%08x\n",
+ currentFrame,pc);
}
- fprintf(stdout,"#%d 0x%08x in %s () at %s:%d\n",
- currentFrame,func->laddr,func->sym->name,func->mod->c_name,func->lline+1);
- fprintf(stdout,"\032\032%s:%d:1:beg:0x%08x\n",
- func->mod->cfullname,func->lline+1,func->laddr);
-
- discoverContext (func->laddr, func);
}
/*-----------------------------------------------------------------*/
int cmdFinish (char *s, context *ctxt)
{
+#if 0
if (STACK_EMPTY(callStack)) {
fprintf(stdout,"The program is not running.\n");
return 0;
}
+#endif
if (srcMode == SRC_CMODE) {
setBreakPoint (ctxt->func->sym->eaddr, CODE, STEP,