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Reorganised FPU emulation.

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This commit is contained in:
TomW 2014-11-09 14:07:03 +00:00
commit 087f412d3f
12 changed files with 2670 additions and 1436 deletions
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65
src/codegen_x86.c
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@ -448,14 +448,19 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
OpFn *op_table = x86_dynarec_opcodes;
x86seg *op_ea_seg = &_ds;
int op_ssegs = 0;
int opcode_shift = 0;
int opcode_mask = 0x3ff;
int over = 0;
int pc_off = 0;
while (1)
while (!over)
{
switch (opcode)
{
case 0x0f:
op_table = x86_dynarec_opcodes_0f;
over = 1;
break;
case 0x26: /*ES:*/
@ -498,6 +503,57 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
addbyte(0x83); addbyte(0x2D); addlong((uint32_t)&cycles); addbyte(2);
break;
case 0xd8:
op_table = (op_32 & 0x200) ? x86_opcodes_d8_a32 : x86_opcodes_d8_a16;
opcode_shift = 3;
opcode_mask = 0x1f;
over = 1;
pc_off = -1;
break;
case 0xd9:
op_table = (op_32 & 0x200) ? x86_opcodes_d9_a32 : x86_opcodes_d9_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xda:
op_table = (op_32 & 0x200) ? x86_opcodes_da_a32 : x86_opcodes_da_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xdb:
op_table = (op_32 & 0x200) ? x86_opcodes_db_a32 : x86_opcodes_db_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xdc:
op_table = (op_32 & 0x200) ? x86_opcodes_dc_a32 : x86_opcodes_dc_a16;
opcode_shift = 3;
opcode_mask = 0x1f;
over = 1;
pc_off = -1;
break;
case 0xdd:
op_table = (op_32 & 0x200) ? x86_opcodes_dd_a32 : x86_opcodes_dd_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xde:
op_table = (op_32 & 0x200) ? x86_opcodes_de_a32 : x86_opcodes_de_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xdf:
op_table = (op_32 & 0x200) ? x86_opcodes_df_a32 : x86_opcodes_df_a16;
opcode_mask = 0xff;
over = 1;
pc_off = -1;
break;
case 0xf0: /*LOCK*/
addbyte(0x83); addbyte(0x2D); addlong((uint32_t)&cycles); addbyte(2);
break;
@ -510,13 +566,14 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
if (abrt)
return;
opcode = fetchdat & 0xff;
fetchdat >>= 8;
if (!pc_off)
fetchdat >>= 8;
op_pc++;
}
generate_call:
op = op_table[(opcode | op_32) & 0x3ff];
op = op_table[((opcode >> opcode_shift) | op_32) & opcode_mask];
// if (output)
// pclog("Generate call at %08X %02X %08X %02X %08X %08X %08X %08X %08X %02X %02X %02X %02X\n", &codeblock[block_current][block_pos], opcode, new_pc, ram[old_pc], EAX, EBX, ECX, EDX, ESI, ram[0x7bd2+6],ram[0x7bd2+7],ram[0x7bd2+8],ram[0x7bd2+9]);
if (opcode_needs_tempc[opcode])
@ -548,7 +605,7 @@ generate_call:
addbyte(0xC7); /*MOVL $new_pc,(pc)*/
addbyte(0x05);
addlong((uint32_t)&pc);
addlong(op_pc);
addlong(op_pc + pc_off);
addbyte(0xC7); /*MOVL $old_pc,(oldpc)*/
addbyte(0x05);
addlong((uint32_t)&oldpc);