Macintosh-Tools/dingusppc
1
0
Fork 0
mirror of https://github.com/dingusdev/dingusppc.git synced 2025-01-11 05:29:43 +00:00
Code Issues Projects Releases Wiki Activity

Started bugfixing and refactoring

Browse Source
This commit is contained in:
dingusdev 2020-02-07 20:54:10 -07:00
parent 6473ea1a26
commit ad0659a702
1 changed files with 46 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
cpu/ppc/ppcdisasm.cpp
View File

@ -61,6 +61,10 @@ const char* opc_idx_ldst[24] = { /* indexed load/store opcodes */
"lfdux", "stfsx", "stfsux", "stfdx", "stfdux"
};
const char* opc_bim_str[6] = { /* boolean immediate instructions */
"ori", "oris", "xori", "xoris", "andi.", "andis."
};
const char* opc_logic[16] = { /* indexed load/store opcodes */
"and", "andc", "", "nor", "", "", "", "", "eqv", "xor", "", "", "orc", "or",
"nand", ""
@ -332,6 +336,32 @@ void opc_cmp_i_li(PPCDisasmContext* ctx)
}
}
void opc_bool_im(PPCDisasmContext* ctx)
{
char opcode[10];
auto ra = (ctx->instr_code >> 16) & 0x1F;
auto rs = (ctx->instr_code >> 21) & 0x1F;
auto index = ((ctx->instr_code >> 26) & 0x1F) - 24;
auto imm = ctx->instr_code & 0xFFFF;
if (ctx->simplified) {
if (index == 0) {
if (imm == 0) { /* unofficial, produced by IDA */
fmt_twoop(ctx->instr_str, "mr", ra, rs);
return;
}
else if (!ra && !rs && !imm) {
ctx->instr_str = "nop";
return;
}
}
}
strcpy(opcode, opc_bim_str[index]);
fmt_threeop_uimm(ctx->instr_str, opcode, ra, rs, imm);
}
void generic_bcx(PPCDisasmContext* ctx, uint32_t bo, uint32_t bi, uint32_t dst)
{
char opcode[10] = "bc";
@ -619,6 +649,9 @@ void opc_group19(PPCDisasmContext* ctx)
opc_bclrx(ctx);
return;
case 33:
if (ctx->simplified && (ra == rb)) {
ctx->instr_str = my_sprintf("%-8scrb%d, crb%d", "crnot", rs, ra);
}
fmt_threeop_crb(ctx->instr_str, "crnor", rs, ra, rb);
return;
case 50:
@ -634,9 +667,7 @@ void opc_group19(PPCDisasmContext* ctx)
if (ctx->simplified && (rs == ra) && (rs == rb)) {
ctx->instr_str = my_sprintf("%-8scrb%d", "crclr", rs);
}
else {
fmt_threeop_crb(ctx->instr_str, "crxor", rs, ra, rb);
}
fmt_threeop_crb(ctx->instr_str, "crxor", rs, ra, rb);
return;
case 225:
fmt_threeop_crb(ctx->instr_str, "crnand", rs, ra, rb);
@ -645,12 +676,20 @@ void opc_group19(PPCDisasmContext* ctx)
fmt_threeop_crb(ctx->instr_str, "crand", rs, ra, rb);
return;
case 289:
if (ctx->simplified && (rs == ra) && (rs == rb)) {
ctx->instr_str = my_sprintf("%-8scrb%d", "crset", rs);
return;
}
fmt_threeop_crb(ctx->instr_str, "creqv", rs, ra, rb);
return;
case 417:
fmt_threeop_crb(ctx->instr_str, "crorc", rs, ra, rb);
return;
case 449:
if (ctx->simplified && (ra == rb)) {
ctx->instr_str = my_sprintf("%-8scrb%d, crb%d", "crmove", rs, ra);
return;
}
fmt_threeop_crb(ctx->instr_str, "cror", rs, ra, rb);
return;
case 528:
@ -732,7 +771,7 @@ void opc_group31(PPCDisasmContext* ctx)
if ((!index || index == 2) && (ext_opc & 0x200))
opc_illegal(ctx);
else
fmt_threeop_simm(ctx->instr_str, opcode, rs, ra, rb);
fmt_threeop(ctx->instr_str, opcode, rs, ra, rb);
}
return;
@ -829,7 +868,7 @@ void opc_group31(PPCDisasmContext* ctx)
if (rc_set)
opc_illegal(ctx);
else
ctx->instr_str = my_sprintf("%-8sr%d, r%d, r%d", "tw", rs, ra, rb);
ctx->instr_str = my_sprintf("%-8s%d, r%d, r%d", "tw", rs, ra, rb);
break;
case 19: /* mfcr */
fmt_oneop(ctx->instr_str, "mfcr", rs);
@ -1368,8 +1407,8 @@ static std::function<void(PPCDisasmContext*)> OpcodeDispatchTable[64] = {
opc_ar_im, opc_ar_im, opc_ar_im, opc_ar_im,
opc_bcx, opc_sc, opc_bx, opc_group19,
opc_rlwimi, opc_rlwinm, opc_illegal, opc_rlwnm,
opc_ori, opc_oris, opc_xori, opc_xoris,
opc_andidot, opc_andisdot, opc_illegal, opc_group31,
opc_bool_im, opc_bool_im, opc_bool_im, opc_bool_im,
opc_bool_im, opc_bool_im, opc_illegal, opc_group31,
opc_intldst, opc_intldst, opc_intldst, opc_intldst,
opc_intldst, opc_intldst, opc_intldst, opc_intldst,
opc_intldst, opc_intldst, opc_intldst, opc_intldst,