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SH2: Further improvements to PC_relative loads in the delay slot.

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This commit is contained in:
R. Belmont 2010-10-07 03:18:08 +00:00
parent 9ea6e5de56
commit f1e355c62e
1 changed files with 5 additions and 5 deletions
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10
src/emu/cpu/sh2/sh2drc.c
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@ -1758,7 +1758,7 @@ static int generate_opcode(sh2_state *sh2, drcuml_block *block, compiler_state *
disp = ((INT32)opcode << 20) >> 20;
sh2->ea = (desc->pc + 2) + disp * 2 + 2; // sh2->ea = pc+4 + disp*2 + 2
generate_delay_slot(sh2, block, compiler, desc, sh2->ea);
generate_delay_slot(sh2, block, compiler, desc, sh2->ea-2);
generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles>
UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // hashjmp sh2->ea
@ -1772,7 +1772,7 @@ static int generate_opcode(sh2_state *sh2, drcuml_block *block, compiler_state *
disp = ((INT32)opcode << 20) >> 20;
sh2->ea = (desc->pc + 2) + disp * 2 + 2; // sh2->ea = pc+4 + disp*2 + 2
generate_delay_slot(sh2, block, compiler, desc, sh2->ea);
generate_delay_slot(sh2, block, compiler, desc, sh2->ea-2);
generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles>
UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // hashjmp sh2->ea
@ -2473,7 +2473,7 @@ static int generate_group_4(sh2_state *sh2, drcuml_block *block, compiler_state
UML_ADD(block, MEM(&sh2->pr), IMM(desc->pc), IMM(4)); // add sh2->pr, desc->pc, #4 (skip the current insn & delay slot)
generate_delay_slot(sh2, block, compiler, desc, sh2->target);
generate_delay_slot(sh2, block, compiler, desc, sh2->target-4);
generate_update_cycles(sh2, block, compiler, MEM(&sh2->target), TRUE); // <subtract cycles>
UML_HASHJMP(block, IMM(0), MEM(&sh2->target), sh2->nocode); // and do the jump
@ -2970,7 +2970,7 @@ static int generate_group_8(sh2_state *sh2, drcuml_block *block, compiler_state
templabel = compiler->labelnum; // save our label
compiler->labelnum++; // make sure the delay slot doesn't use it
generate_delay_slot(sh2, block, compiler, desc, sh2->ea);
generate_delay_slot(sh2, block, compiler, desc, sh2->ea-2);
generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles>
UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // jmp sh2->ea
@ -2991,7 +2991,7 @@ static int generate_group_8(sh2_state *sh2, drcuml_block *block, compiler_state
templabel = compiler->labelnum; // save our label
compiler->labelnum++; // make sure the delay slot doesn't use it
generate_delay_slot(sh2, block, compiler, desc, sh2->ea); // delay slot only if the branch is taken
generate_delay_slot(sh2, block, compiler, desc, sh2->ea-2); // delay slot only if the branch is taken
generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles>
UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // jmp sh2->ea