mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-01 08:25:12 +01:00
725 lines
20 KiB
C++
725 lines
20 KiB
C++
/************************************************************************/
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/* Arm/Thumb command set disassembler */
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/************************************************************************/
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#include <stdio.h>
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#include "../System.h"
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#include "../common/Port.h"
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#include "GBA.h"
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#include "armdis.h"
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#include "elf.h"
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struct Opcodes {
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u32 mask;
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u32 cval;
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const char *mnemonic;
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};
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#define debuggerReadMemory(addr) \
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READ32LE(((u32*)&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]))
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#define debuggerReadHalfWord(addr) \
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READ16LE(((u16*)&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]))
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#define debuggerReadByte(addr) \
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map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]
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const char hdig[] = "0123456789abcdef";
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const char *decVals[16] = {
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"0","1","2","3","4","5","6","7","8",
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"9","10","11","12","13","14","15"
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};
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const char *regs[16] = {
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"r0","r1","r2","r3","r4","r5","r6","r7",
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"r8","r9","r10","r11","r12","sp","lr","pc"
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};
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const char *conditions[16] = {
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"eq","ne","cs","cc","mi","pl","vs","vc",
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"hi","ls","ge","lt","gt","le","","nv"
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};
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const char *shifts[5] = {
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"lsl","lsr","asr","ror","rrx"
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};
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const char *armMultLoadStore[12] = {
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// non-stack
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"da","ia","db","ib",
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// stack store
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"ed","ea","fd","fa",
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// stack load
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"fa","fd","ea","ed"
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};
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const Opcodes thumbOpcodes[] = {
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// Format 1
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{0xf800, 0x0000, "lsl %r0, %r3, %o"},
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{0xf800, 0x0800, "lsr %r0, %r3, %o"},
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{0xf800, 0x1000, "asr %r0, %r3, %o"},
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// Format 2
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{0xfe00, 0x1800, "add %r0, %r3, %r6"},
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{0xfe00, 0x1a00, "sub %r0, %r3, %r6"},
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{0xfe00, 0x1c00, "add %r0, %r3, %i"},
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{0xfe00, 0x1e00, "sub %r0, %r3, %i"},
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// Format 3
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{0xf800, 0x2000, "mov %r8, %O"},
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{0xf800, 0x2800, "cmp %r8, %O"},
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{0xf800, 0x3000, "add %r8, %O"},
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{0xf800, 0x3800, "sub %r8, %O"},
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// Format 4
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{0xffc0, 0x4000, "and %r0, %r3"},
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{0xffc0, 0x4040, "eor %r0, %r3"},
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{0xffc0, 0x4080, "lsl %r0, %r3"},
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{0xffc0, 0x40c0, "lsr %r0, %r3"},
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{0xffc0, 0x4100, "asr %r0, %r3"},
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{0xffc0, 0x4140, "adc %r0, %r3"},
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{0xffc0, 0x4180, "sbc %r0, %r3"},
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{0xffc0, 0x41c0, "ror %r0, %r3"},
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{0xffc0, 0x4200, "tst %r0, %r3"},
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{0xffc0, 0x4240, "neg %r0, %r3"},
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{0xffc0, 0x4280, "cmp %r0, %r3"},
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{0xffc0, 0x42c0, "cmn %r0, %r3"},
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{0xffc0, 0x4300, "orr %r0, %r3"},
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{0xffc0, 0x4340, "mul %r0, %r3"},
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{0xffc0, 0x4380, "bic %r0, %r3"},
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{0xffc0, 0x43c0, "mvn %r0, %r3"},
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// Format 5
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{0xff80, 0x4700, "bx %h36"},
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{0xfcc0, 0x4400, "[ ??? ]"},
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{0xff00, 0x4400, "add %h07, %h36"},
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{0xff00, 0x4500, "cmp %h07, %h36"},
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{0xff00, 0x4600, "mov %h07, %h36"},
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// Format 6
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{0xf800, 0x4800, "ldr %r8, [%I] (=%J)"},
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// Format 7
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{0xfa00, 0x5000, "str%b %r0, [%r3, %r6]"},
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{0xfa00, 0x5800, "ldr%b %r0, [%r3, %r6]"},
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// Format 8
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{0xfe00, 0x5200, "strh %r0, [%r3, %r6]"},
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{0xfe00, 0x5600, "ldsb %r0, [%r3, %r6]"},
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{0xfe00, 0x5a00, "ldrh %r0, [%r3, %r6]"},
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{0xfe00, 0x5e00, "ldsh %r0, [%r3, %r6]"},
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// Format 9
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{0xe800, 0x6000, "str%B %r0, [%r3, %p]"},
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{0xe800, 0x6800, "ldr%B %r0, [%r3, %p]"},
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// Format 10
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{0xf800, 0x8000, "strh %r0, [%r3, %e]"},
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{0xf800, 0x8800, "ldrh %r0, [%r3, %e]"},
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// Format 11
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{0xf800, 0x9000, "str %r8, [sp, %w]"},
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{0xf800, 0x9800, "ldr %r8, [sp, %w]"},
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// Format 12
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{0xf800, 0xa000, "add %r8, pc, %w (=%K)"},
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{0xf800, 0xa800, "add %r8, sp, %w"},
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// Format 13
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{0xff00, 0xb000, "add sp, %s"},
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// Format 14
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{0xffff, 0xb500, "push {lr}"},
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{0xff00, 0xb400, "push {%l}"},
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{0xff00, 0xb500, "push {%l,lr}"},
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{0xffff, 0xbd00, "pop {pc}"},
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{0xff00, 0xbd00, "pop {%l,pc}"},
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{0xff00, 0xbc00, "pop {%l}"},
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// Format 15
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{0xf800, 0xc000, "stmia %r8!, {%l}"},
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{0xf800, 0xc800, "ldmia %r8!, {%l}"},
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// Format 17
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{0xff00, 0xdf00, "swi %m"},
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// Format 16
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{0xf000, 0xd000, "b%c %W"},
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// Format 18
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{0xf800, 0xe000, "b %a"},
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// Format 19
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{0xf800, 0xf000, "bl %A"},
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{0xf800, 0xf800, "blh %Z"},
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{0xff00, 0xbe00, "bkpt %O"},
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// Unknown
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{0x0000, 0x0000, "[ ??? ]"}
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};
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const Opcodes armOpcodes[] = {
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// Undefined
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{0x0e000010, 0x06000010, "[ undefined ]"},
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// Branch instructions
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{0x0ff000f0, 0x01200010, "bx%c %r0"},
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{0x0f000000, 0x0a000000, "b%c %o"},
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{0x0f000000, 0x0b000000, "bl%c %o"},
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{0x0f000000, 0x0f000000, "swi%c %q"},
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// PSR transfer
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{0x0fbf0fff, 0x010f0000, "mrs%c %r3, %p"},
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{0x0db0f000, 0x0120f000, "msr%c %p, %i"},
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// Multiply instructions
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{0x0fe000f0, 0x00000090, "mul%c%s %r4, %r0, %r2"},
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{0x0fe000f0, 0x00200090, "mla%c%s %r4, %r0, %r2, %r3"},
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{0x0fa000f0, 0x00800090, "%umull%c%s %r3, %r4, %r0, %r2"},
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{0x0fa000f0, 0x00a00090, "%umlal%c%s %r3, %r4, %r0, %r2"},
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// Load/Store instructions
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{0x0fb00ff0, 0x01000090, "swp%c%b %r3, %r0, [%r4]"},
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{0x0fb000f0, 0x01000090, "[ ??? ]"},
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{0x0c100000, 0x04000000, "str%c%b%t %r3, %a"},
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{0x0c100000, 0x04100000, "ldr%c%b%t %r3, %a"},
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{0x0e100090, 0x00000090, "str%c%h %r3, %a"},
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{0x0e100090, 0x00100090, "ldr%c%h %r3, %a"},
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{0x0e100000, 0x08000000, "stm%c%m %r4%l"},
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{0x0e100000, 0x08100000, "ldm%c%m %r4%l"},
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// Data processing
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{0x0de00000, 0x00000000, "and%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00200000, "eor%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00400000, "sub%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00600000, "rsb%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00800000, "add%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00a00000, "adc%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00c00000, "sbc%c%s %r3, %r4, %i"},
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{0x0de00000, 0x00e00000, "rsc%c%s %r3, %r4, %i"},
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{0x0de00000, 0x01000000, "tst%c%s %r4, %i"},
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{0x0de00000, 0x01200000, "teq%c%s %r4, %i"},
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{0x0de00000, 0x01400000, "cmp%c%s %r4, %i"},
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{0x0de00000, 0x01600000, "cmn%c%s %r4, %i"},
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{0x0de00000, 0x01800000, "orr%c%s %r3, %r4, %i"},
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{0x0de00000, 0x01a00000, "mov%c%s %r3, %i"},
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{0x0de00000, 0x01c00000, "bic%c%s %r3, %r4, %i"},
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{0x0de00000, 0x01e00000, "mvn%c%s %r3, %i"},
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// Coprocessor operations
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{0x0f000010, 0x0e000000, "cdp%c %P, %N, %r3, %R4, %R0%V"},
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{0x0e100000, 0x0c000000, "stc%c%L %P, %r3, %A"},
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{0x0f100010, 0x0e000010, "mcr%c %P, %N, %r3, %R4, %R0%V"},
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{0x0f100010, 0x0e100010, "mrc%c %P, %N, %r3, %R4, %R0%V"},
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// Unknown
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{0x00000000, 0x00000000, "[ ??? ]"}
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};
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char* addStr(char *dest, const char *src){
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while (*src){
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*dest++ = *src++;
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}
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return dest;
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}
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char* addHex(char *dest, int siz, u32 val){
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if (siz==0){
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siz = 28;
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while ( (((val>>siz)&15)==0) && (siz>=4) )
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siz -= 4;
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siz += 4;
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}
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while (siz>0){
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siz -= 4;
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*dest++ = hdig[(val>>siz)&15];
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}
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return dest;
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}
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int disArm(u32 offset, char *dest, int flags){
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u32 opcode = debuggerReadMemory(offset);
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const Opcodes *sp = armOpcodes;
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while( sp->cval != (opcode & sp->mask) )
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sp++;
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if (flags&DIS_VIEW_ADDRESS){
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dest = addHex(dest, 32, offset);
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*dest++ = ' ';
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}
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if (flags&DIS_VIEW_CODE){
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dest = addHex(dest, 32, opcode);
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*dest++ = ' ';
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}
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const char *src = sp->mnemonic;
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while (*src){
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if (*src!='%')
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*dest++ = *src++;
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else{
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src++;
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switch (*src){
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case 'c':
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dest = addStr(dest, conditions[opcode>>28]);
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break;
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case 'r':
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dest = addStr(dest, regs[(opcode>>((*(++src)-'0')*4))&15]);
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break;
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case 'o':
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{
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*dest++ = '$';
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int off = opcode&0xffffff;
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if (off&0x800000)
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off |= 0xff000000;
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off <<= 2;
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dest = addHex(dest, 32, offset+8+off);
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}
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break;
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case 'i':
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if (opcode&(1<<25)){
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dest = addStr(dest, "#0x");
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int imm = opcode&0xff;
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int rot = (opcode&0xf00)>>7;
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int val = (imm<<(32-rot))|(imm>>rot);
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dest = addHex(dest, 0, val);
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} else{
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dest = addStr(dest, regs[opcode&0x0f]);
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int shi = (opcode>>5)&3;
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int sdw = (opcode>>7)&0x1f;
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if ((sdw==0)&&(shi==3))
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shi = 4;
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if ( (sdw) || (opcode&0x10) || (shi)) {
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dest = addStr(dest, ", ");
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dest = addStr(dest, shifts[shi]);
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if (opcode&0x10){
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*dest++ = ' ';
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dest = addStr(dest, regs[(opcode>>8)&15]);
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} else {
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if (sdw==0 && ( (shi==1) || (shi==2) ))
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sdw = 32;
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if(shi != 4) {
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dest = addStr(dest, " #0x");
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dest = addHex(dest, 8, sdw);
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}
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}
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}
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}
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break;
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case 'p':
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if (opcode&(1<<22))
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dest = addStr(dest, "spsr");
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else
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dest = addStr(dest, "cpsr");
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if(opcode & 0x00F00000) {
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*dest++ = '_';
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if(opcode & 0x00080000)
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*dest++ = 'f';
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if(opcode & 0x00040000)
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*dest++ = 's';
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if(opcode & 0x00020000)
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*dest++ = 'x';
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if(opcode & 0x00010000)
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*dest++ = 'c';
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}
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break;
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case 's':
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if (opcode&(1<<20))
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*dest++ = 's';
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break;
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case 'S':
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if (opcode&(1<<22))
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*dest++ = 's';
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break;
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case 'u':
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if (opcode&(1<<22))
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*dest++ = 's';
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else
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*dest++ = 'u';
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break;
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case 'b':
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if (opcode&(1<<22))
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*dest++ = 'b';
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break;
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case 'a':
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if ((opcode&0x076f0000)==0x004f0000){
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*dest++ = '[';
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*dest++ = '$';
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int adr = offset+8;
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int add = (opcode&15)|((opcode>>8)&0xf0);
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if (opcode&(1<<23))
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adr += add;
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else
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adr -= add;
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dest = addHex(dest, 32, adr);
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*dest++ = ']';
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dest = addStr(dest, " (=");
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*dest++ = '$';
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dest = addHex(dest ,32, debuggerReadMemory(adr));
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*dest++=')';
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}
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if ((opcode&0x072f0000)==0x050f0000){
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*dest++ = '[';
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*dest++ = '$';
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int adr = offset+8;
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if (opcode&(1<<23))
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adr += opcode&0xfff;
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else
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adr -= opcode&0xfff;
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dest = addHex(dest, 32, adr);
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*dest++ = ']';
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dest = addStr(dest, " (=");
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*dest++ = '$';
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dest = addHex(dest ,32, debuggerReadMemory(adr));
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*dest++=')';
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} else {
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int reg = (opcode>>16)&15;
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*dest++ = '[';
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dest = addStr(dest, regs[reg]);
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if (!(opcode&(1<<24)))
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*dest++ = ']';
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if ( ((opcode&(1<<25))&&(opcode&(1<<26))) || (!(opcode&(1<<22))&&!(opcode&(1<<26))) ){
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dest = addStr(dest, ", ");
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if (!(opcode&(1<<23)))
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*dest++ = '-';
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dest = addStr(dest, regs[opcode&0x0f]);
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int shi = (opcode>>5)&3;
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if (opcode&(1<<26)){
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if ( ((opcode>>7)&0x1f) || (opcode&0x10) || (shi==1) || (shi==2)){
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dest = addStr(dest, ", ");
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dest = addStr(dest, shifts[shi]);
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if (opcode&0x10){
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*dest++ = ' ';
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dest = addStr(dest, regs[(opcode>>8)&15]);
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} else {
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int sdw = (opcode>>7)&0x1f;
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if (sdw==0 && ( (shi==1) || (shi==2) ))
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sdw = 32;
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dest = addStr(dest, " #0x");
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dest = addHex(dest, 8, sdw);
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}
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}
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}
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} else {
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int off;
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if (opcode&(1<<26))
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off = opcode&0xfff;
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else
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off = (opcode&15)|((opcode>>4)&0xf0);
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if (off){
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dest = addStr(dest, ", ");
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if (!(opcode&(1<<23)))
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*dest++ = '-';
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dest = addStr(dest, "#0x");
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dest = addHex(dest, 0, off);
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}
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}
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if (opcode&(1<<24)){
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*dest++ = ']';
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if (opcode&(1<<21))
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*dest++ = '!';
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}
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}
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break;
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case 't':
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if ((opcode&0x01200000)==0x01200000)
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*dest++ = 't';
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break;
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case 'h':
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if (opcode&(1<<6))
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*dest++ = 's';
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if (opcode&(1<<5))
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*dest++ = 'h';
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else
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*dest++ = 'b';
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break;
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case 'm':
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if (((opcode>>16)&15)==13) {
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if(opcode & 0x00100000)
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dest = addStr(dest, armMultLoadStore[8+((opcode>>23)&3)]);
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else
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dest = addStr(dest, armMultLoadStore[4+((opcode>>23)&3)]);
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} else
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dest = addStr(dest, armMultLoadStore[(opcode>>23)&3]);
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break;
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case 'l':
|
|
if (opcode&(1<<21))
|
|
*dest++ = '!';
|
|
dest = addStr(dest, ", {");
|
|
{
|
|
int rlst = opcode&0xffff;
|
|
int msk = 0;
|
|
int not_first = 0;
|
|
while (msk<16){
|
|
if (rlst&(1<<msk)){
|
|
int fr = msk;
|
|
while (rlst&(1<<msk))
|
|
msk++;
|
|
int to = msk-1;
|
|
if (not_first)
|
|
//dest = addStr(dest, ", ");
|
|
*dest++ = ',';
|
|
dest = addStr(dest, regs[fr]);
|
|
if (fr!=to){
|
|
if (fr==to-1)
|
|
//dest = addStr(", ");
|
|
*dest++ = ',';
|
|
else
|
|
*dest++ = '-';
|
|
dest = addStr(dest, regs[to]);
|
|
}
|
|
not_first = 1;
|
|
} else
|
|
msk++;
|
|
}
|
|
*dest++ = '}';
|
|
if (opcode&(1<<22))
|
|
*dest++ = '^';
|
|
}
|
|
break;
|
|
case 'q':
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 24, opcode&0xffffff);
|
|
break;
|
|
case 'P':
|
|
*dest++ = 'p';
|
|
dest = addStr(dest, decVals[(opcode>>8)&15]);
|
|
break;
|
|
case 'N':
|
|
if (opcode&0x10)
|
|
dest = addStr(dest, decVals[(opcode>>21)&7]);
|
|
else
|
|
dest = addStr(dest, decVals[(opcode>>20)&15]);
|
|
break;
|
|
case 'R':
|
|
{
|
|
src++;
|
|
int reg = 4*(*src-'0');
|
|
*dest++ = 'c';
|
|
dest = addStr(dest, decVals[(opcode>>reg)&15]);
|
|
}
|
|
break;
|
|
case 'V':
|
|
{
|
|
int val = (opcode>>5)&7;
|
|
if (val){
|
|
dest = addStr(dest, ", ");
|
|
dest = addStr(dest, decVals[val]);
|
|
}
|
|
}
|
|
break;
|
|
case 'L':
|
|
if (opcode&(1<<22))
|
|
*dest++ = 'l';
|
|
break;
|
|
case 'A':
|
|
if ((opcode&0x012f0000)==0x010f0000){
|
|
int adr = offset+8;
|
|
int add = (opcode&0xff)<<2;
|
|
if (opcode&(1<<23))
|
|
adr += add;
|
|
else
|
|
adr -= add;
|
|
*dest++ = '$';
|
|
addHex(dest, 32, adr);
|
|
} else {
|
|
*dest++ = '[';
|
|
dest = addStr(dest, regs[(opcode>>16)&15]);
|
|
if (!(opcode&(1<<24)))
|
|
*dest++ = ']';
|
|
int off = (opcode&0xff)<<2;
|
|
if (off){
|
|
dest = addStr(dest, ", ");
|
|
if (!(opcode&(1<<23)))
|
|
*dest++ = '-';
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, off);
|
|
}
|
|
if (opcode&(1<<24)){
|
|
*dest++ = ']';
|
|
if (opcode&(1<<21))
|
|
*dest++ = '!';
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
src++;
|
|
}
|
|
}
|
|
*dest++ = 0;
|
|
|
|
return 4;
|
|
}
|
|
|
|
int disThumb(u32 offset, char *dest, int flags){
|
|
u32 opcode = debuggerReadHalfWord(offset);
|
|
|
|
const Opcodes *sp = thumbOpcodes;
|
|
int ret = 2;
|
|
while( sp->cval != (opcode & sp->mask) )
|
|
sp++;
|
|
|
|
if (flags&DIS_VIEW_ADDRESS){
|
|
dest = addHex(dest, 32, offset);
|
|
*dest++ = ' ';
|
|
}
|
|
if (flags&DIS_VIEW_CODE){
|
|
dest = addHex(dest, 16, opcode);
|
|
*dest++ = ' ';
|
|
}
|
|
|
|
const char *src = sp->mnemonic;
|
|
while (*src){
|
|
if (*src!='%')
|
|
*dest++ = *src++;
|
|
else {
|
|
src++;
|
|
switch (*src){
|
|
case 'r':
|
|
src++;
|
|
dest = addStr(dest, regs[(opcode>>(*src-'0'))&7]);
|
|
break;
|
|
case 'o':
|
|
dest = addStr(dest, "#0x");
|
|
{
|
|
int val = (opcode>>6)&0x1f;
|
|
dest = addHex(dest, 8, val);
|
|
}
|
|
break;
|
|
case 'p':
|
|
dest = addStr(dest, "#0x");
|
|
{
|
|
int val = (opcode>>6)&0x1f;
|
|
if (!(opcode&(1<<12)))
|
|
val <<= 2;
|
|
dest = addHex(dest, 0, val);
|
|
}
|
|
break;
|
|
case 'e':
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, ((opcode>>6)&0x1f)<<1);
|
|
break;
|
|
case 'i':
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, (opcode>>6)&7);
|
|
break;
|
|
case 'h':
|
|
{
|
|
src++;
|
|
int reg = (opcode>>(*src-'0'))&7;
|
|
src++;
|
|
if (opcode&(1<<(*src-'0')))
|
|
reg += 8;
|
|
dest = addStr(dest, regs[reg]);
|
|
}
|
|
break;
|
|
case 'O':
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, (opcode&0xff));
|
|
break;
|
|
case 'I':
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 32, (offset&0xfffffffc)+4+((opcode&0xff)<<2));
|
|
break;
|
|
case 'J':
|
|
{
|
|
u32 value = debuggerReadMemory((offset&0xfffffffc)+4+
|
|
((opcode & 0xff)<<2));
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 32, value);
|
|
const char *s = elfGetAddressSymbol(value);
|
|
if(*s) {
|
|
*dest++ = ' ';
|
|
dest = addStr(dest, s);
|
|
}
|
|
}
|
|
break;
|
|
case 'K':
|
|
{
|
|
u32 value = (offset&0xfffffffc)+4+((opcode & 0xff)<<2);
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 32, value);
|
|
const char *s = elfGetAddressSymbol(value);
|
|
if(*s) {
|
|
*dest++ = ' ';
|
|
dest = addStr(dest, s);
|
|
}
|
|
}
|
|
break;
|
|
case 'b':
|
|
if (opcode&(1<<10))
|
|
*dest++ = 'b';
|
|
break;
|
|
case 'B':
|
|
if (opcode&(1<<12))
|
|
*dest++ = 'b';
|
|
break;
|
|
case 'w':
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, (opcode&0xff)<<2);
|
|
break;
|
|
case 'W':
|
|
*dest++ = '$';
|
|
{
|
|
int add = opcode&0xff;
|
|
if (add&0x80)
|
|
add |= 0xffffff00;
|
|
dest = addHex(dest, 32, (offset&0xfffffffe)+4+(add<<1));
|
|
}
|
|
break;
|
|
case 'c':
|
|
dest = addStr(dest, conditions[(opcode>>8)&15]);
|
|
break;
|
|
case 's':
|
|
if (opcode&(1<<7))
|
|
*dest++ = '-';
|
|
dest = addStr(dest, "#0x");
|
|
dest = addHex(dest, 0, (opcode&0x7f)<<2);
|
|
break;
|
|
case 'l':
|
|
{
|
|
int rlst = opcode&0xff;
|
|
int msk = 0;
|
|
int not_first = 0;
|
|
while (msk<8){
|
|
if (rlst&(1<<msk)){
|
|
int fr = msk;
|
|
while (rlst&(1<<msk))
|
|
msk++;
|
|
int to = msk-1;
|
|
if (not_first)
|
|
*dest++ = ',';
|
|
dest = addStr(dest, regs[fr]);
|
|
if (fr!=to){
|
|
if (fr==to-1)
|
|
*dest++ = ',';
|
|
else
|
|
*dest++ = '-';
|
|
dest = addStr(dest, regs[to]);
|
|
}
|
|
not_first = 1;
|
|
} else
|
|
msk++;
|
|
}
|
|
}
|
|
break;
|
|
case 'm':
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 8, opcode&0xff);
|
|
break;
|
|
case 'Z':
|
|
*dest++ = '$';
|
|
dest = addHex(dest, 16, (opcode&0x7ff)<<1);
|
|
break;
|
|
case 'a':
|
|
*dest++ = '$';
|
|
{
|
|
int add = opcode&0x07ff;
|
|
if (add&0x400)
|
|
add |= 0xfffff800;
|
|
add <<= 1;
|
|
dest = addHex(dest, 32, offset+4+add);
|
|
}
|
|
break;
|
|
case 'A':
|
|
{
|
|
int nopcode = debuggerReadHalfWord(offset+2);
|
|
int add = opcode&0x7ff;
|
|
if (add&0x400)
|
|
add |= 0xfff800;
|
|
add = (add<<12)|((nopcode&0x7ff)<<1);
|
|
*dest++ = '$';
|
|
dest = addHex(dest,32, offset+4+add);
|
|
const char *s = elfGetAddressSymbol(offset+4+add);
|
|
if(*s) {
|
|
*dest++ = ' ';
|
|
*dest++ = '(';
|
|
dest = addStr(dest, s);
|
|
*dest++ = ')';
|
|
}
|
|
ret = 4;
|
|
}
|
|
break;
|
|
}
|
|
src++;
|
|
}
|
|
}
|
|
*dest++ = 0;
|
|
return ret;
|
|
}
|