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adding GetData32Be, GetData32Le for getting 4bytes from big or lite endian

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start implment Ld for ppc.

svn path=/trunk/; revision=25440
This commit is contained in:
Magnus Olsen 2007-01-13 17:27:14 +00:00
parent ad3d7fea36
commit 350c6a32c2
7 changed files with 105 additions and 3 deletions
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8
rosapps/devutils/cputointel/From/PPC/PPC.h
View file

@ -14,6 +14,14 @@ CPU_INT PPCBrain( CPU_BYTE *cpu_buffer,
CPU_INT PPC_Addx(FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos, CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch, CPU_INT mode);
CPU_INT PPC_Ld( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch,
CPU_INT mode);
/* Export comment thing see m68k for example
* in dummy we do not show it, for it is diffent for each cpu
*/
extern CPU_BYTE PPC_D[32];
extern CPU_BYTE PPC_A[32];
extern CPU_BYTE PPC_ds[32];

15
rosapps/devutils/cputointel/From/PPC/PPCBrain.c
View file

@ -58,8 +58,8 @@ CPU_INT PPCBrain( CPU_BYTE *cpu_buffer,
{
cpu_oldpos = cpu_pos;
cpuint = cpu_buffer[cpu_pos];
cpuint = GetData32Le(&cpu_buffer[cpu_pos]);
/* Add */
if ((cpuint - (cpuint & GetMaskByte32(cpuPPCInit_Addx))) == ConvertBitToByte32(cpuPPCInit_Addx))
{
@ -70,6 +70,17 @@ CPU_INT PPCBrain( CPU_BYTE *cpu_buffer,
else
cpu_pos += retsize;
}
/* Ld aslo known as Li */
if ((cpuint - (cpuint & GetMaskByte32(cpuPPCInit_Ld))) == ConvertBitToByte32(cpuPPCInit_Ld))
{
retsize = PPC_Ld( outfp, cpu_buffer, cpu_pos, cpu_size,
BaseAddress, cpuarch, mode);
if (retsize<0)
retcode = 1;
else
cpu_pos += retsize;
}
/* Found all Opcode and breakout and return no error found */
if (cpu_pos >=cpu_size)

15
rosapps/devutils/cputointel/From/PPC/PPCBrain.h
View file

@ -10,3 +10,18 @@
*/
CPU_BYTE cpuPPCInit_Addx[32] = {2,0,1,0,1,0,0,0,0,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,0};
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};
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};
/* mask */
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};
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};
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};
/* bit index
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
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
*/

28
rosapps/devutils/cputointel/From/PPC/PPCopcode.c
View file

@ -39,3 +39,31 @@ CPU_INT PPC_Addx( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
printf(";Add unimplement\n");
return -1;
}
// stb
// li %r3, 0 : op 00 00 60 38
// li = ld
// 0000 0000 0000 0000 0100 0000 0011 1000
CPU_INT PPC_Ld( FILE *out, CPU_BYTE * cpu_buffer, CPU_UNINT cpu_pos,
CPU_UNINT cpu_size, CPU_UNINT BaseAddress, CPU_UNINT cpuarch,
CPU_INT mode)
{
CPU_UNINT formA;
CPU_UNINT formD;
CPU_UNINT formDS;
CPU_UNINT opcode;
opcode = GetData32Le(cpu_buffer);
formA = (opcode & ConvertBitToByte(PPC_A)) >> 5;
formD = (opcode & ConvertBitToByte(PPC_D)) >> 10;
formDS = (opcode & ConvertBitToByte(PPC_ds)) >> 15;
if (mode==0)
{
fprintf(out,"Line_0x%8x :\n",BaseAddress + cpu_pos);
}
printf(";not full implement \n");
return 4;
}

8
rosapps/devutils/cputointel/From/dummycpu/DummyBrain.c
View file

@ -59,7 +59,13 @@ CPU_INT DummyBrain( CPU_BYTE *cpu_buffer,
{
cpu_oldpos = cpu_pos;
cpuint = cpu_buffer[cpu_pos];
/* use the GetData32Be or GetData32Le
to read from the memory the
Le is for small endian and the
Be is for big endian
the 32 is how many bits we should read
*/
cpuint = GetData32Be(&cpu_buffer[cpu_pos]);
/* Add */
if ((cpuint - (cpuint & GetMaskByte(cpuDummyInit_Add))) == ConvertBitToByte(cpuDummyInit_Add))

31
rosapps/devutils/cputointel/misc.c
View file

@ -97,6 +97,37 @@ CPU_UNINT GetMaskByte32(CPU_BYTE *bit)
CPU_UNINT GetData32Le(CPU_BYTE *cpu_buffer)
{
CPU_UNINT cpuint;
CPU_UNINT split1;
CPU_UNINT split2;
CPU_UNINT split3;
CPU_UNINT split4;
cpuint = *((CPU_UNINT*) &cpu_buffer[0]);
split1 = cpu_buffer[0];
split2 = cpu_buffer[1];
split3 = cpu_buffer[2];
split4 = cpu_buffer[3];
cpuint = split4+(split3 <<8 )+(split2 <<16 )+(split1 <<24 );
return cpuint;
}
CPU_UNINT GetData32Be(CPU_BYTE *cpu_buffer)
{
CPU_UNINT cpuint;
cpuint = *((CPU_UNINT*) &cpu_buffer[0]);
return cpuint;
}
// add no carry

3
rosapps/devutils/cputointel/misc.h
View file

@ -20,3 +20,6 @@ CPU_UNINT GetMaskByte(CPU_BYTE *bit);
CPU_UNINT ConvertBitToByte32(CPU_BYTE *bit);
CPU_UNINT GetMaskByte32(CPU_BYTE *bit);
CPU_UNINT GetData32Le(CPU_BYTE *cpu_buffer);
CPU_UNINT GetData32Be(CPU_BYTE *cpu_buffer);