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DSP asm/disasm: improve the shift instructions so they at least round-trip. not 100% sure it's correct though.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2957 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard
2009-04-12 13:43:12 +00:00
parent f6474b98a8
commit d4055b971b
4 changed files with 19 additions and 126 deletions
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10
Source/Core/DSPCore/Src/disassemble.cpp
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@ -46,10 +46,7 @@ char* gd_dis_params(gd_globals_t* gdg, const DSPOPCTemplate* opc, u16 op1, u16 o
for (int j = 0; j < opc->param_count; j++)
{
if (j > 0)
{
sprintf(buf, ", ");
buf += strlen(buf);
}
buf += sprintf(buf, ", ");
if (opc->params[j].loc >= 1)
val = op2;
@ -63,8 +60,7 @@ char* gd_dis_params(gd_globals_t* gdg, const DSPOPCTemplate* opc, u16 op1, u16 o
else
val = val >> opc->params[j].lshift;
u32 type;
type = opc->params[j].type;
u32 type = opc->params[j].type;
if ((type & 0xff) == 0x10)
type &= 0xff00;
@ -106,7 +102,7 @@ char* gd_dis_params(gd_globals_t* gdg, const DSPOPCTemplate* opc, u16 op1, u16 o
if (opc->params[j].size != 2)
{
if (opc->params[j].mask == 0x007f) // LSL, LSR, ASL, ASR
sprintf(buf, "#%d", val < 64 ? val : -(0x80 - (s32)val));
sprintf(buf, "#%d", (val & 0x40) ? (val | 0xFFFFFFC0) : val);
else
sprintf(buf, "#0x%02x", val);
}