diff options
author | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-02-02 04:37:34 +0000 |
---|---|---|
committer | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-02-02 04:37:34 +0000 |
commit | 7c34497d5de78120879d44ebf4b5e10004894873 (patch) | |
tree | 04a19d66c2130bffe26f4b990cd1c88746378f75 /ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c | |
parent | 778449055feae94c3db27965730a366d7c806122 (diff) | |
download | edk2-7c34497d5de78120879d44ebf4b5e10004894873.zip edk2-7c34497d5de78120879d44ebf4b5e10004894873.tar.gz edk2-7c34497d5de78120879d44ebf4b5e10004894873.tar.bz2 |
More progress on the disassebler lib
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9909 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c')
-rw-r--r-- | ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c | 248 |
1 files changed, 152 insertions, 96 deletions
diff --git a/ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c b/ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c index 25cb8ae..02958c8 100644 --- a/ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c +++ b/ArmPkg/Library/ArmDisassemblerLib/ThumbDisassembler.c @@ -17,6 +17,8 @@ #include <Library/BaseLib.h>
#include <Library/PrintLib.h>
+extern CHAR8 *gCondition[];
+
extern CHAR8 *gReg[];
#define LOAD_STORE_FORMAT1 1
@@ -24,7 +26,8 @@ extern CHAR8 *gReg[]; #define LOAD_STORE_FORMAT3 3
#define LOAD_STORE_FORMAT4 4
#define LOAD_STORE_MULTIPLE_FORMAT1 5
-#define LOAD_STORE_MULTIPLE_FORMAT2 6
+#define PUSH_FORMAT 6
+#define POP_FORMAT 106
#define IMMED_8 7
#define CONDITIONAL_BRANCH 8
#define UNCONDITIONAL_BRANCH 9
@@ -42,6 +45,10 @@ extern CHAR8 *gReg[]; #define CPS_FORMAT 20
#define ENDIAN_FORMAT 21
+#define B_T3 200
+#define B_T4 201
+#define BL_T2 202
+
typedef struct {
CHAR8 *Start;
@@ -60,8 +67,8 @@ THUMB_INSTRUCTIONS gOpThumb[] = { { "ADD" , 0x1800, 0xfe00, DATA_FORMAT1 },
{ "ADD" , 0x4400, 0xff00, DATA_FORMAT8 }, // A8.6.9
{ "ADD" , 0xa000, 0xf100, DATA_FORMAT6_PC },
- { "ADD" , 0xa100, 0xf100, DATA_FORMAT6_SP },
- { "ADD" , 0xb000, 0xff10, DATA_FORMAT7 },
+ { "ADD" , 0xa800, 0xf800, DATA_FORMAT6_SP },
+ { "ADD" , 0xb000, 0xff80, DATA_FORMAT7 },
{ "AND" , 0x4000, 0xffc0, DATA_FORMAT5 },
@@ -69,22 +76,20 @@ THUMB_INSTRUCTIONS gOpThumb[] = { { "ASR" , 0x4100, 0xffc0, DATA_FORMAT5 },
{ "B" , 0xd000, 0xf000, CONDITIONAL_BRANCH },
- { "B" , 0xe000, 0xf100, UNCONDITIONAL_BRANCH_SHORT },
- { "BL" , 0xf100, 0xf100, UNCONDITIONAL_BRANCH },
- { "BLX" , 0xe100, 0xf100, UNCONDITIONAL_BRANCH },
+ { "B" , 0xe000, 0xf800, UNCONDITIONAL_BRANCH_SHORT },
{ "BLX" , 0x4780, 0xff80, BRANCH_EXCHANGE },
- { "BX" , 0x4700, 0xff80, BRANCH_EXCHANGE },
+ { "BX" , 0x4700, 0xff87, BRANCH_EXCHANGE },
{ "BIC" , 0x4380, 0xffc0, DATA_FORMAT5 },
{ "BKPT", 0xdf00, 0xff00, IMMED_8 },
{ "CMN" , 0x42c0, 0xffc0, DATA_FORMAT5 },
- { "CMP" , 0x2800, 0xf100, DATA_FORMAT3 },
+ { "CMP" , 0x2800, 0xf800, DATA_FORMAT3 },
{ "CMP" , 0x4280, 0xffc0, DATA_FORMAT5 },
{ "CMP" , 0x4500, 0xff00, DATA_FORMAT8 },
{ "CPS" , 0xb660, 0xffe8, CPS_FORMAT },
- { "CPY" , 0x4600, 0xff00, DATA_FORMAT8 },
+ { "MOV" , 0x4600, 0xff00, DATA_FORMAT8 },
{ "EOR" , 0x4040, 0xffc0, DATA_FORMAT5 },
{ "LDMIA" , 0xc800, 0xf800, LOAD_STORE_MULTIPLE_FORMAT1 },
@@ -99,12 +104,13 @@ THUMB_INSTRUCTIONS gOpThumb[] = { { "LDRSB" , 0x5600, 0xfe00, LOAD_STORE_FORMAT2 },
{ "LDRSH" , 0x5e00, 0xfe00, LOAD_STORE_FORMAT2 },
+ { "MOVS", 0x0000, 0xffc0, DATA_FORMAT5 }, // LSL with imm5 == 0 is a MOVS, so this must go before LSL
{ "LSL" , 0x0000, 0xf800, DATA_FORMAT4 },
{ "LSL" , 0x4080, 0xffc0, DATA_FORMAT5 },
{ "LSR" , 0x0001, 0xf800, DATA_FORMAT4 },
{ "LSR" , 0x40c0, 0xffc0, DATA_FORMAT5 },
- { "MOV" , 0x2000, 0xf800, DATA_FORMAT3 },
+ { "MOVS", 0x2000, 0xf800, DATA_FORMAT3 },
{ "MOV" , 0x1c00, 0xffc0, DATA_FORMAT3 },
{ "MOV" , 0x4600, 0xff00, DATA_FORMAT8 },
@@ -112,16 +118,16 @@ THUMB_INSTRUCTIONS gOpThumb[] = { { "MVN" , 0x41c0, 0xffc0, DATA_FORMAT5 },
{ "NEG" , 0x4240, 0xffc0, DATA_FORMAT5 },
{ "ORR" , 0x4180, 0xffc0, DATA_FORMAT5 },
- { "POP" , 0xbc00, 0xfe00, LOAD_STORE_MULTIPLE_FORMAT2 },
- { "POP" , 0xe400, 0xfe00, LOAD_STORE_MULTIPLE_FORMAT2 },
-
+ { "POP" , 0xbc00, 0xfe00, POP_FORMAT },
+ { "PUSH", 0xb400, 0xfe00, PUSH_FORMAT },
+
{ "REV" , 0xba00, 0xffc0, DATA_FORMAT5 },
{ "REV16" , 0xba40, 0xffc0, DATA_FORMAT5 },
{ "REVSH" , 0xbac0, 0xffc0, DATA_FORMAT5 },
- { "ROR" , 0x41c0, 0xffc0, DATA_FORMAT5 },
- { "SBC" , 0x4180, 0xffc0, DATA_FORMAT5 },
- { "SETEND" , 0xb650, 0xfff0, ENDIAN_FORMAT },
+ { "ROR" , 0x41c0, 0xffc0, DATA_FORMAT5 },
+ { "SBC" , 0x4180, 0xffc0, DATA_FORMAT5 },
+ { "SETEND" , 0xb650, 0xfff0, ENDIAN_FORMAT },
{ "STMIA" , 0xc000, 0xf800, LOAD_STORE_MULTIPLE_FORMAT1 },
{ "STR" , 0x6000, 0xf800, LOAD_STORE_FORMAT1 },
@@ -146,9 +152,13 @@ THUMB_INSTRUCTIONS gOpThumb[] = { { "UXTH", 0xb280, 0xffc0, DATA_FORMAT5 }
};
-#if 0
THUMB_INSTRUCTIONS gOpThumb2[] = {
- ,
+ { "B", 0xf0008000, 0xf800d000, B_T3 },
+ { "B", 0xf0009000, 0xf800d000, B_T4 },
+ { "BL", 0xf000d000, 0xf800d000, B_T4 },
+ { "BLX", 0xf000c000, 0xf800d000, BL_T2 }
+
+#if 0
// 32-bit Thumb instructions op1 01
@@ -195,14 +205,14 @@ THUMB_INSTRUCTIONS gOpThumb2[] = { // 1111 1 011 0xxx xxxx xxxx xxxx xxxx xxxx Multiply
// 1111 1 011 1xxx xxxx xxxx xxxx xxxx xxxx Long Multiply
// 1111 1 1xx xxxx xxxx xxxx xxxx xxxx xxxx Coprocessor
-};
#endif
+};
CHAR8 mThumbMregListStr[4*15 + 1];
CHAR8 *
ThumbMRegList (
- UINT32 OpCode
+ UINT32 RegBitMask
)
{
UINTN Index, Start, End;
@@ -213,10 +223,10 @@ ThumbMRegList ( *Str = '\0';
AsciiStrCat (Str, "{");
// R0 - R7, PC
- for (Index = 0, First = TRUE; Index <= 9; Index++) {
- if ((OpCode & (1 << Index)) != 0) {
+ for (Index = 0, First = TRUE; Index <= 15; Index++) {
+ if ((RegBitMask & (1 << Index)) != 0) {
Start = End = Index;
- for (Index++; ((OpCode & (1 << Index)) != 0) && (Index <= 9); Index++) {
+ for (Index++; ((RegBitMask & (1 << Index)) != 0) && (Index <= 9); Index++) {
End = Index;
}
@@ -227,12 +237,11 @@ ThumbMRegList ( }
if (Start == End) {
- AsciiStrCat (Str, gReg[(Start == 9)?15:Start]);
- AsciiStrCat (Str, ", ");
+ AsciiStrCat (Str, gReg[Start]);
} else {
AsciiStrCat (Str, gReg[Start]);
AsciiStrCat (Str, "-");
- AsciiStrCat (Str, gReg[(End == 9)?15:End]);
+ AsciiStrCat (Str, gReg[End]);
}
}
}
@@ -246,11 +255,21 @@ ThumbMRegList ( }
UINT32
-SignExtend (
- IN UINT32 Data
+SignExtend32 (
+ IN UINT32 Data,
+ IN UINT32 TopBit
)
{
- return 0;
+ if (((Data & TopBit) == 0) || (TopBit == BIT31)) {
+ return Data;
+ }
+
+ do {
+ TopBit <<= 1;
+ Data |= TopBit;
+ } while ((TopBit & BIT31) != BIT31);
+
+ return Data;
}
/**
@@ -276,19 +295,20 @@ DisassembleThumbInstruction ( {
UINT16 *OpCodePtr;
UINT16 OpCode;
- UINT16 OpCode32;
+ UINT32 OpCode32;
UINT32 Index;
UINT32 Offset;
UINT16 Rd, Rn, Rm;
- INT32 target_addr;
BOOLEAN H1, H2, imod;
- UINT32 PC;
+ UINT32 PC, Target;
+ CHAR8 *Cond;
+ BOOLEAN S, J1, J2;
OpCodePtr = *OpCodePtrPtr;
OpCode = **OpCodePtrPtr;
// Thumb2 is a stream of 16-bit instructions not a 32-bit instruction.
- OpCode32 = (OpCode << 16) | *(OpCodePtr + 1);
+ OpCode32 = (((UINT32)OpCode) << 16) | *(OpCodePtr + 1);
// These register names match branch form, but not others
Rd = OpCode & 0x7;
@@ -297,7 +317,7 @@ DisassembleThumbInstruction ( H1 = (OpCode & BIT7) != 0;
H2 = (OpCode & BIT6) != 0;
imod = (OpCode & BIT4) != 0;
- PC = (UINT32)(UINTN)*OpCodePtr;
+ PC = (UINT32)(UINTN)OpCodePtr;
// Increment by the minimum instruction size, Thumb2 could be bigger
*OpCodePtrPtr += 1;
@@ -305,136 +325,172 @@ DisassembleThumbInstruction ( for (Index = 0; Index < sizeof (gOpThumb)/sizeof (THUMB_INSTRUCTIONS); Index++) {
if ((OpCode & gOpThumb[Index].Mask) == gOpThumb[Index].OpCode) {
if (Extended) {
- Offset = AsciiSPrint (Buf, Size, "0x%04x %a", OpCode, gOpThumb[Index].Start);
+ Offset = AsciiSPrint (Buf, Size, "0x%04x %-6a", OpCode, gOpThumb[Index].Start);
} else {
- Offset = AsciiSPrint (Buf, Size, "%a", gOpThumb[Index].Start);
+ Offset = AsciiSPrint (Buf, Size, "%-6a", gOpThumb[Index].Start);
}
switch (gOpThumb[Index].AddressMode) {
case LOAD_STORE_FORMAT1:
// A6.5.1 <Rd>, [<Rn>, #<5_bit_offset>]
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [r%d #0x%x]", Rd, (OpCode >> 7) & 7, (OpCode >> 6) & 0x1f);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [r%d #0x%x]", Rd, Rn, (OpCode >> 4) & 0x7c);
+ return;
case LOAD_STORE_FORMAT2:
// A6.5.1 <Rd>, [<Rn>, <Rm>]
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [r%d, r%d]", Rd, (OpCode >> 3) & 7, Rm);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [r%d, r%d]", Rd, Rn, Rm);
+ return;
case LOAD_STORE_FORMAT3:
// A6.5.1 <Rd>, [PC, #<8_bit_offset>]
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [pc, #0x%x]", (OpCode >> 8) & 7, OpCode & 0xff);
- break;
+ Target = (OpCode & 0xff) << 2;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [pc, #0x%x] ;0x%08x", (OpCode >> 8) & 7, Target, PC + 4 + Target);
+ return;
case LOAD_STORE_FORMAT4:
- // FIX ME!!!!!
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [sp, #0x%x]", (OpCode >> 8) & 7, OpCode & 0xff);
- break;
+ // Rt, [SP, #imm8]
+ Target = (OpCode & 0xff) << 2;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, [sp, #0x%x]", (OpCode >> 8) & 7, Target, PC + 3 + Target);
+ return;
case LOAD_STORE_MULTIPLE_FORMAT1:
- // <Rn>!, <registers>
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d!, %a", (OpCode >> 8) & 7, ThumbMRegList (!BIT8 & OpCode));
- break;
- case LOAD_STORE_MULTIPLE_FORMAT2:
- // <Rn>!, <registers>
- // BIT8 is PC
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d!, %a", (OpCode >> 8) & 7, ThumbMRegList (OpCode));
- break;
+ // <Rn>!, {r0-r7}
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d!, %a", (OpCode >> 8) & 7, ThumbMRegList (OpCode & 0xff));
+ return;
+
+ case POP_FORMAT:
+ // POP {r0-r7,pc}
+ AsciiSPrint (&Buf[Offset], Size - Offset, " %a", ThumbMRegList ((OpCode & 0xff) | ((OpCode & BIT8) == BIT8 ? BIT15 : 0)));
+ return;
+
+ case PUSH_FORMAT:
+ // PUSH {r0-r7,lr}
+ AsciiSPrint (&Buf[Offset], Size - Offset, " %a", ThumbMRegList ((OpCode & 0xff) | ((OpCode & BIT8) == BIT8 ? BIT14 : 0)));
+ return;
+
case IMMED_8:
// A6.7 <immed_8>
AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%x", OpCode & 0xff);
- break;
+ return;
case CONDITIONAL_BRANCH:
// A6.3.1 B<cond> <target_address>
- AsciiSPrint (&Buf[Offset], Size - Offset, "%a 0x%04x", PC + 4 + SignExtend ((OpCode & 0xff) << 1));
- break;
+ // Patch in the condition code. A little hack but based on "%-6a"
+ Cond = gCondition[(OpCode >> 8) & 0xf];
+ Buf[Offset-5] = *Cond++;
+ Buf[Offset-4] = *Cond;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%04x", PC + 4 + SignExtend32 ((OpCode & 0xff) << 1, BIT8));
+ return;
case UNCONDITIONAL_BRANCH_SHORT:
// A6.3.2 B <target_address>
- AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%04x", PC + 4 + SignExtend ((OpCode & 0x3ff) << 1));
- break;
- case UNCONDITIONAL_BRANCH:
- // A6.3.2 BL|BLX <target_address> ; Produces two 16-bit instructions
- target_addr = *(OpCodePtr - 1);
- if ((target_addr & 0xf800) == 0xf000) {
- target_addr = ((target_addr & 0x3ff) << 12) | (OpCode & 0x3ff);
- } else {
- target_addr = OpCode & 0x3ff;
- }
- // PC + 2 +/- target_addr
- AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%04x", PC + 2 + SignExtend (target_addr));
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%04x", PC + 4 + SignExtend32 ((OpCode & 0x3ff) << 1, BIT11));
+ return;
+
case BRANCH_EXCHANGE:
// A6.3.3 BX|BLX <Rm>
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d", gReg[Rn | (H2 ? 8:0)]);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " %a", gReg[Rn | (H2 ? 8:0)]);
+ return;
case DATA_FORMAT1:
// A6.4.3 <Rd>, <Rn>, <Rm>
AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, r%d, r%d", Rd, Rn, Rm);
- break;
+ return;
case DATA_FORMAT2:
// A6.4.3 <Rd>, <Rn>, #3_bit_immed
AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, r%d, 0x%x", Rd, Rn, Rm);
- break;
+ return;
case DATA_FORMAT3:
- // A6.4.3 <Rd>|<Rn>, #8_bit_immed
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, r%d, 0x%x", (OpCode >> 8) & 0x7, OpCode & 0xff);
- break;
+ // A6.4.3 <Rd>|<Rn>, #imm8
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, #0x%x", (OpCode >> 8) & 7, OpCode & 0xff);
+ return;
case DATA_FORMAT4:
// A6.4.3 <Rd>|<Rm>, #immed_5
AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, r%d, 0x%x", Rn, Rd, (OpCode >> 6) & 0x1f);
- break;
+ return;
case DATA_FORMAT5:
// A6.4.3 <Rd>|<Rm>, <Rm>|<Rs>
AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, r%d", Rd, Rn);
- break;
+ return;
case DATA_FORMAT6_SP:
// A6.4.3 <Rd>, <reg>, #<8_Bit_immed>
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, sp, 0x%x", (OpCode >> 8) & 7, OpCode & 0xff);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, sp, 0x%x", (OpCode >> 8) & 7, (OpCode & 0xff) << 2);
+ return;
case DATA_FORMAT6_PC:
// A6.4.3 <Rd>, <reg>, #<8_Bit_immed>
- AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, pc, 0x%x", (OpCode >> 8) & 7, OpCode & 0xff);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " r%d, pc, 0x%x", (OpCode >> 8) & 7, (OpCode & 0xff) << 2);
+ return;
case DATA_FORMAT7:
// A6.4.3 SP, SP, #<7_Bit_immed>
- AsciiSPrint (&Buf[Offset], Size - Offset, " sp, sp 0x%x", (OpCode & 0x7f)*4);
- break;
+ AsciiSPrint (&Buf[Offset], Size - Offset, " sp, sp, 0x%x", (OpCode & 0x7f)*4);
+ return;
case DATA_FORMAT8:
// A6.4.3 <Rd>|<Rn>, <Rm>
AsciiSPrint (&Buf[Offset], Size - Offset, " %a, %a", gReg[Rd | (H1 ? 8:0)], gReg[Rn | (H2 ? 8:0)]);
- break;
+ return;
case CPS_FORMAT:
// A7.1.24
AsciiSPrint (&Buf[Offset], Size - Offset, "%a %a%a%a", imod ? "ID":"IE", ((OpCode & BIT2) == 0) ? "":"a", ((OpCode & BIT1) == 0) ? "":"i", ((OpCode & BIT0) == 0) ? "":"f");
- break;
+ return;
case ENDIAN_FORMAT:
// A7.1.24
AsciiSPrint (&Buf[Offset], Size - Offset, " %a", (OpCode & BIT3) == 0 ? "LE":"BE");
- break;
+ return;
}
}
}
-#if 0
+
+
// Thumb2 are 32-bit instructions
*OpCodePtrPtr += 1;
for (Index = 0; Index < sizeof (gOpThumb2)/sizeof (THUMB_INSTRUCTIONS); Index++) {
if ((OpCode32 & gOpThumb2[Index].Mask) == gOpThumb2[Index].OpCode) {
if (Extended) {
- Offset = AsciiSPrint (Buf, Size, "0x%04x %a", OpCode32, gOpThumb2[Index].Start);
+ Offset = AsciiSPrint (Buf, Size, "0x%04x %-6a", OpCode32, gOpThumb2[Index].Start);
} else {
- Offset = AsciiSPrint (Buf, Size, "%a", gOpThumb2[Index].Start);
+ Offset = AsciiSPrint (Buf, Size, " %-6a", gOpThumb2[Index].Start);
}
switch (gOpThumb2[Index].AddressMode) {
+ case B_T3:
+ Cond = gCondition[(OpCode32 >> 22) & 0xf];
+ Buf[Offset-5] = *Cond++;
+ Buf[Offset-4] = *Cond;
+ // S:J2:J1:imm6:imm11:0
+ Target = ((OpCode32 << 1) & 0xffe) + ((OpCode32 >> 4) & 0x3f000);
+ Target |= (OpCode & BIT11) ? BIT18 : 0; // J2
+ Target |= (OpCode & BIT13) ? BIT17 : 0; // J1
+ Target |= (OpCode & BIT26) ? BIT19 : 0; // S
+ Target = SignExtend32 (Target, BIT19);
+ AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%08x", Target);
+ return;
+ case B_T4:
+ // S:I1:I2:imm10:imm11:0
+ Target = ((OpCode32 << 1) & 0xffe) + ((OpCode32 >> 4) & 0x3ff000);
+ S = (OpCode & BIT26);
+ J1 = (OpCode & BIT13);
+ J2 = (OpCode & BIT11);
+ Target |= !(J2 ^ S) ? BIT21 : 0; // I2
+ Target |= !(J1 ^ S) ? BIT22 : 0; // I1
+ Target |= (OpCode & BIT26) ? BIT23 : 0; // S
+ Target = SignExtend32 (Target, BIT23);
+ AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%08x", Target);
+ return;
+
+ case BL_T2:
+ // S:I1:I2:imm10:imm11:0
+ Target = ((OpCode32 << 2) & 0x1ffc) + ((OpCode32 >> 3) & 0x7fe000);
+ S = (OpCode & BIT26);
+ J1 = (OpCode & BIT13);
+ J2 = (OpCode & BIT11);
+ Target |= !(J2 ^ S) ? BIT22 : 0; // I2
+ Target |= !(J1 ^ S) ? BIT23 : 0; // I1
+ Target |= (OpCode & BIT26) ? BIT24 : 0; // S
+ Target = SignExtend32 (Target, BIT24);
+ AsciiSPrint (&Buf[Offset], Size - Offset, " 0x%08x", Target);
+ return;
}
}
}
-#endif
- // Unknown instruction is 16-bits
- *OpCodePtrPtr -= 1;
- if (!Extended) {
- AsciiSPrint (Buf, Size, "0x%04x", OpCode);
- }
+
+ AsciiSPrint (Buf, Size, "0x%08x", OpCode32);
}
|