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authorntfreak <ntfreak@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-07-21 20:05:05 +0000
committerntfreak <ntfreak@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-07-21 20:05:05 +0000
commiteea0486263f173bc685cf0cfdda648ac5ab36c0a (patch)
tree6c010879339b730cfb8ca260e6a867cbd6f4b624
parentcd0ca916b342215e5bde80586051cb105fedad56 (diff)
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David Brownell <david-b@pacbell.net>:
Minor updates to the Thumb2 disassembly: - Bugfixes: * Distinguish branch from misc via "!=" not "==" * MRS register shift is 8 bits (vs MSR being 16) - Format tweaks: * CPS needed tab (not space) * add commma before some shifts * add space after comma in LDM/STM * use ".W" width spec on various instructions git-svn-id: svn://svn.berlios.de/openocd/trunk@2553 b42882b7-edfa-0310-969c-e2dbd0fdcd60
-rw-r--r--src/target/arm_disassembler.c29
1 files changed, 18 insertions, 11 deletions
diff --git a/src/target/arm_disassembler.c b/src/target/arm_disassembler.c
index 9d154435..e0be5a44 100644
--- a/src/target/arm_disassembler.c
+++ b/src/target/arm_disassembler.c
@@ -2080,7 +2080,7 @@ static int evaluate_cps_thumb(uint16_t opcode, uint32_t address,
(opcode & 0x80) ? "BE" : "LE");
else /* ASSUME (opcode & 0x0fe0) == 0x0660 */
snprintf(instruction->text, 128,
- "0x%8.8" PRIx32 " 0x%4.4x \tCPSI%c %s%s%s",
+ "0x%8.8" PRIx32 " 0x%4.4x \tCPSI%c\t%s%s%s",
address, opcode,
(opcode & 0x0010) ? 'D' : 'E',
(opcode & 0x0004) ? "A" : "",
@@ -2522,7 +2522,7 @@ static int t2ev_b_misc(uint32_t opcode, uint32_t address,
case 0x4:
goto undef;
case 0:
- if (((opcode >> 23) & 0x07) == 0x07)
+ if (((opcode >> 23) & 0x07) != 0x07)
return t2ev_cond_b(opcode, address, instruction, cp);
if (opcode & (1 << 26))
goto undef;
@@ -2541,7 +2541,7 @@ static int t2ev_b_misc(uint32_t opcode, uint32_t address,
return t2ev_misc(opcode, address, instruction, cp);
case 0x3e:
case 0x3f:
- sprintf(cp, "MRS\tr%d, %s", (opcode >> 16) & 0x0f,
+ sprintf(cp, "MRS\tr%d, %s", (opcode >> 8) & 0x0f,
special_name(opcode & 0xff));
return ERROR_OK;
}
@@ -2560,6 +2560,7 @@ static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address,
unsigned func;
bool one = false;
char *suffix = "";
+ char *suffix2 = "";
/* ARMv7-M: A5.3.2 Modified immediate constants */
func = (opcode >> 11) & 0x0e;
@@ -2597,6 +2598,7 @@ static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address,
mnemonic = "TST";
one = true;
suffix = "";
+ suffix2 = ".W";
rd = rn;
} else {
instruction->type = ARM_AND;
@@ -2612,6 +2614,7 @@ static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address,
instruction->type = ARM_MOV;
mnemonic = "MOV";
one = true;
+ suffix2 = ".W";
} else {
instruction->type = ARM_ORR;
mnemonic = "ORR";
@@ -2649,6 +2652,7 @@ static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address,
} else {
instruction->type = ARM_ADD;
mnemonic = "ADD";
+ suffix2 = ".W";
}
break;
case 10:
@@ -2670,21 +2674,24 @@ static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address,
instruction->type = ARM_SUB;
mnemonic = "SUB";
}
+ suffix2 = ".W";
break;
case 14:
instruction->type = ARM_RSB;
mnemonic = "RSB";
+ suffix2 = ".W";
break;
default:
return ERROR_INVALID_ARGUMENTS;
}
if (one)
- sprintf(cp, "%s\tr%d, #%d\t; %#8.8x",
- mnemonic, rd, immed, immed);
+ sprintf(cp, "%s%s\tr%d, #%d\t; %#8.8x",
+ mnemonic, suffix2 ,rd, immed, immed);
else
- sprintf(cp, "%s%s\tr%d, r%d, #%d\t; %#8.8x",
- mnemonic, suffix, rd, rn, immed, immed);
+ sprintf(cp, "%s%s%s\tr%d, r%d, #%d\t; %#8.8x",
+ mnemonic, suffix, suffix2,
+ rd, rn, immed, immed);
return ERROR_OK;
}
@@ -2959,13 +2966,13 @@ static int t2ev_ldm_stm(uint32_t opcode, uint32_t address,
if (rn == 13 && t)
sprintf(cp, "POP\t");
else
- sprintf(cp, "LDM\tr%d%s, ", rn, t ? "!" : "");
+ sprintf(cp, "LDM.W\tr%d%s, ", rn, t ? "!" : "");
break;
case 4:
if (rn == 13 && t)
sprintf(cp, "PUSH\t");
else
- sprintf(cp, "STM\tr%d%s, ", rn, t ? "!" : "");
+ sprintf(cp, "STM.W\tr%d%s, ", rn, t ? "!" : "");
break;
case 5:
sprintf(cp, "LDMB\tr%d%s, ", rn, t ? "!" : "");
@@ -2980,7 +2987,7 @@ static int t2ev_ldm_stm(uint32_t opcode, uint32_t address,
if ((registers & 1) == 0)
continue;
registers &= ~1;
- sprintf(cp, "r%d%s", t, registers ? "," : "");
+ sprintf(cp, "r%d%s", t, registers ? ", " : "");
cp = strchr(cp, 0);
}
*cp++ = '}';
@@ -3139,7 +3146,7 @@ shift:
suffix = "ROR";
break;
}
- sprintf(cp, " %s #%d", suffix, immed ? immed : 32);
+ sprintf(cp, ", %s #%d", suffix, immed ? immed : 32);
return ERROR_OK;
two: