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Fixing some ppc disambler bugs. Li are not 100% test it can contain some fault.
Fixing Li bug the register for dest was wrong calctions see file OpCodePPC.txt. fixing some meaing in ReadMe.txt svn path=/trunk/; revision=25511
This commit is contained in:
Magnus Olsen
parent
fd1467e3a2
commit
e6cfb666ca
6 changed files with 50 additions and 44 deletions
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@ -10,14 +10,11 @@ CPU_INT PPCBrain( CPU_BYTE *cpu_buffer,
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/* here we put the prototype for the opcode api that brain need we show a example for it */
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CPU_INT PPC_Addx(FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos, CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch);
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CPU_INT PPC_Blr( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos, CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch);
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CPU_INT PPC_Ld( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos, CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch);
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CPU_INT PPC_Li( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos, CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch);
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/* Export comment thing see m68k for example
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* in dummy we do not show it, for it is diffent for each cpu
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*/
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extern CPU_BYTE PPC_D[32];
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extern CPU_BYTE PPC_A[32];
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extern CPU_BYTE PPC_ds[32];
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@ -59,10 +59,10 @@ CPU_INT PPCBrain( CPU_BYTE *cpu_buffer,
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cpuint = GetData32Le(&cpu_buffer[cpu_pos]);
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/* 0x38 Ld aslo known as Li */
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if ((cpuint - (cpuint & GetMaskByte32(cpuPPCInit_Ld))) == ConvertBitToByte32(cpuPPCInit_Ld))
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/* 0xE = Li*/
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if ((cpuint - (cpuint & GetMaskByte32(cpuPPCInit_Li))) == ConvertBitToByte32(cpuPPCInit_Li))
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{
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retsize = PPC_Ld( outfp, cpu_buffer, cpu_pos, cpu_size,
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retsize = PPC_Li( outfp, cpu_buffer, cpu_pos, cpu_size,
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BaseAddress, cpuarch);
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if (retsize<0)
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retcode = 1;
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@ -12,14 +12,17 @@
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CPU_BYTE cpuPPCInit_Blr[32] = {0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,1,1,1,0};
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CPU_BYTE cpuPPCInit_Ld[32] = {0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,0,0,1,1,1,0,0,0};
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CPU_BYTE cpuPPCInit_Ldu[32] = {1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,0,0,1,1,1,0,0,0};
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/* xxxx xxxx xxxx xxxx DDD0 0000 xxxx xxDD
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* 2222 2222 2222 2222 2222 2222 0011 1022 Li
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*/
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CPU_BYTE cpuPPCInit_Li[32] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,0,0,0,0,0,0,0,1,1, 1,0,2,2};
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/* mask */
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CPU_BYTE PPC_D[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0};
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CPU_BYTE PPC_A[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0};
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CPU_BYTE PPC_ds[32] = {0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
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/*
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* no mask we implement function getting the reg right
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*/
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/* bit index
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3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
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@ -26,7 +26,21 @@
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* value 0 : wrong opcode or not vaild opcode
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* value +1 and higher : who many byte we should add to cpu_pos
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*/
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/* only for ppc */
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#define PPC_GetBitArray6toA(opcode) (((opcode & 0x3) << 3) | ((opcode & 0xE000) >> 13))
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CPU_UNINT PPC_GetBitArrayBto31(CPU_UNINT opcode)
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{
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CPU_INT x1;
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/* FIXME make it to a macro
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* not tested to 100% yet */
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x1 = ((opcode & 0xFFFF0000)>>16);
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return x1;
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}
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CPU_INT PPC_Blr( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
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@ -47,23 +61,12 @@ CPU_INT PPC_Blr( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
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}
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CPU_INT PPC_Ld( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
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CPU_INT PPC_Li( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
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CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch)
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{
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CPU_UNINT formA;
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CPU_UNINT formD;
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CPU_UNINT formDS;
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CPU_UNINT opcode;
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opcode = GetData32Le(cpu_buffer);
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formD = (opcode & ConvertBitToByte32(PPC_D)) >> 6;
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formA = (opcode & ConvertBitToByte32(PPC_A)) >> 13;
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formDS = (opcode & ConvertBitToByte32(PPC_ds)) >> 15;
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if (formD != 0)
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{
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return 0;
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}
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BaseAddress +=cpu_pos;
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@ -75,8 +78,8 @@ CPU_INT PPC_Ld( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
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pMyBrainAnalys->op = OP_ANY_mov;
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pMyBrainAnalys->type= 8 + 16; /* 8 dst reg, 16 imm */
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pMyBrainAnalys->src_size = 16;
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pMyBrainAnalys->src = formDS;
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pMyBrainAnalys->dst = formA;
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pMyBrainAnalys->src = PPC_GetBitArrayBto31(opcode);
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pMyBrainAnalys->dst = PPC_GetBitArray6toA(opcode);
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pMyBrainAnalys->memAdr=BaseAddress;
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return 4;
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@ -20,14 +20,15 @@ opcode Name Desciptions
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Here how the primary opcode work
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xxxx xxxx xxxx xxxx DDDS SSSS 3333 33DD
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3 = it is the primary opcode
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D = Destions register
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S = Source reigters
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opcode
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------------------------
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|bit order: 0123 45 67|
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------- ------- ----------- ----
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opcode
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------------------------
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|bit order: 0123 45 67|
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------- ------- ----------- ----
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34: | 0c 00 | | e1 93 | stw r31,12(r1) 0000 1100 0000 0000 1110 0001 | 1001 00 | 00
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38: | 14 00 | | 01 90 | stw r0,20(r1) 0001 0100 0000 0000 0000 0001 | 1001 00 | 11
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------- ------- ---------
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@ -41,8 +42,7 @@ S = Source reigters
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\ /
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The address offset 12 or 20
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---------------------------------------------------------
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|bit order: pos 1111 1111 1111 1111 0000 0000 0000 0000 |
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| 89AB CDEF 0123 4567 89AB CDEF 0123 4567 |
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@ -2,22 +2,25 @@ CpuToIntel is a experment tools and is strict under havy devloping
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The Idea
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The idea is to convert a binary file or win pe file
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The idea is to converting binary files or win pe files
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from one cpu to another cpu, But it does not exists
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plan to port over diffent hardware architect like
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how diffent hw comucate, example x86 DMA controller
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to PPC like. It is only to convert the the binary or
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pe file to another cpu. it mean a user mode apps
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will always be ported, but if it self modify code
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it will not work. But it exists a idea to deal with
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self modify code.
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to PPC like that stuff. It is only to convert the
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binary or pe files to another cpu. it mean a user
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mode apps will always be ported, but if it self
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modify code it will not work. But it exists idea how
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to deal with self modify code.
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The idea to handling self modify code
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The idea is to add a small emulator that
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runing the apps or adding a anylasuing process
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to dectect self modify code and extract it
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this is hard thing todo. almost imposible
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The idea is to add a small emulator or adding
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anaylysing process to dectect self modify code
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and extract it. This is very hard part todo, some say
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imposible, some other say almost imposble. and I say
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it is posible todo but extream hard todo. for it is
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very diffcul to dectect self modify code with a
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analysing process.
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Why the name are CpuToIntel
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