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32x: drc: all opcodes covered, some TODOs left
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@830 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz
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3 changed files with 549 additions and 169 deletions
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@ -1,5 +1,5 @@
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/*
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* note about silly things like emith_eor_r_r_r_lsl:
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* note about silly things like emith_or_r_r_r_lsl:
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* these are here because the compiler was designed
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* for ARM as it's primary target.
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*/
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@ -107,25 +107,44 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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emith_pop(d); \
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}
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#define emith_mvn_r_r(d, s) { \
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if (d != s) \
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emith_move_r_r(d, s); \
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EMIT_OP_MODRM(0xf7, 3, 2, d); /* NOT d */ \
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}
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#define emith_negc_r_r(d, s) { \
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int tmp_ = rcache_get_tmp(); \
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emith_move_r_imm(tmp_, 0); \
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emith_sbc_r_r(tmp_, s); \
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emith_move_r_r(d, tmp_); \
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rcache_free_tmp(tmp_); \
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}
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#define emith_neg_r_r(d, s) { \
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if (d != s) \
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emith_move_r_r(d, s); \
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EMIT_OP_MODRM(0xf7, 3, 3, d); /* NEG d */ \
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}
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// _r_r_r
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#define emith_eor_r_r_r(d, s1, s2) { \
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if (d != s1) \
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if (d == s1) { \
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emith_eor_r_r(d, s2); \
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} else if (d == s2) { \
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emith_eor_r_r(d, s1); \
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} else { \
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emith_move_r_r(d, s1); \
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emith_eor_r_r(d, s2); \
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emith_eor_r_r(d, s2); \
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} \
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}
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#define emith_or_r_r_r_lsl(d, s1, s2, lslimm) { \
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if (d != s2 && d != s1) { \
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emith_lsl(d, s2, lslimm); \
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emith_or_r_r(d, s1); \
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} else { \
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if (d != s1) \
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emith_move_r_r(d, s1); \
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emith_push(s2); \
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emith_lsl(s2, s2, lslimm); \
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emith_or_r_r(d, s2); \
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emith_pop(s2); \
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} \
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int tmp_ = rcache_get_tmp(); \
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emith_lsl(tmp_, s2, lslimm); \
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emith_or_r_r(tmp_, s1); \
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emith_move_r_r(d, tmp_); \
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rcache_free_tmp(tmp_); \
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}
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// _r_imm
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@ -134,12 +153,15 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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EMIT(imm, u32); \
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}
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#define emith_move_r_imm_s8(r, imm) \
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emith_move_r_imm(r, (u32)(signed int)(signed char)(imm))
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#define emith_arith_r_imm(op, r, imm) { \
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EMIT_OP_MODRM(0x81, 3, op, r); \
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EMIT(imm, u32); \
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}
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// 2 - adc, 3 - sbb, 6 - xor
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// 2 - adc, 3 - sbb
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#define emith_add_r_imm(r, imm) \
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emith_arith_r_imm(0, r, imm)
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@ -152,6 +174,9 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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#define emith_sub_r_imm(r, imm) \
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emith_arith_r_imm(5, r, imm)
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#define emith_eor_r_imm(r, imm) \
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emith_arith_r_imm(6, r, imm)
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#define emith_cmp_r_imm(r, imm) \
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emith_arith_r_imm(7, r, imm)
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@ -185,6 +210,13 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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emith_bic_r_imm(r, imm); \
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}
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// _r_r_imm
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#define emith_and_r_r_imm(d, s, imm) { \
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if (d != s) \
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emith_move_r_r(d, s); \
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emith_and_r_imm(d, imm) \
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}
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// shift
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#define emith_shift(op, d, s, cnt) { \
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if (d != s) \
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@ -292,6 +324,7 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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#define emith_subf_r_r emith_sub_r_r
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#define emith_adcf_r_r emith_adc_r_r
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#define emith_sbcf_r_r emith_sbc_r_r
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#define emith_negcf_r_r emith_negc_r_r
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#define emith_lslf emith_lsl
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#define emith_lsrf emith_lsr
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@ -363,18 +396,18 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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u8 *jmp0; /* negative cycles check */ \
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u8 *jmp1; /* unsinged overflow check */ \
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int cr, rn; \
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tmp = rcache_get_tmp(); \
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int tmp_ = rcache_get_tmp(); \
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cr = rcache_get_reg(SHR_SR, RC_GR_RMW); \
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rn = rcache_get_reg((op >> 8) & 0x0f, RC_GR_RMW);\
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emith_sub_r_imm(rn, 1); \
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emith_sub_r_imm(cr, (cycles+1) << 12); \
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cycles = 0; \
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emith_asr(tmp, cr, 2+12); \
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emith_asr(tmp_, cr, 2+12); \
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JMP8_POS(jmp0); /* no negative cycles */ \
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emith_move_r_imm(tmp, 0); \
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emith_move_r_imm(tmp_, 0); \
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JMP8_EMIT(IOP_JNS, jmp0); \
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emith_and_r_imm(cr, 0xffe); \
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emith_subf_r_r(rn, tmp); \
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emith_subf_r_r(rn, tmp_); \
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JMP8_POS(jmp1); /* no overflow */ \
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emith_neg_r(rn); /* count left */ \
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emith_lsl(rn, rn, 2+12); \
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@ -382,25 +415,25 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
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emith_or_r_imm(cr, 1); \
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emith_move_r_imm(rn, 0); \
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JMP8_EMIT(IOP_JA, jmp1); \
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rcache_free_tmp(tmp); \
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rcache_free_tmp(tmp_); \
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}
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#define emith_write_sr(srcr) { \
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int tmp = rcache_get_tmp(); \
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int tmp_ = rcache_get_tmp(); \
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int srr = rcache_get_reg(SHR_SR, RC_GR_RMW); \
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emith_clear_msb(tmp, srcr, 20); \
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emith_clear_msb(tmp_, srcr, 20); \
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emith_bic_r_imm(srr, 0xfff); \
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emith_or_r_r(srr, tmp); \
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rcache_free_tmp(tmp); \
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emith_or_r_r(srr, tmp_); \
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rcache_free_tmp(tmp_); \
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}
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#define emith_carry_to_t(srr, is_sub) { \
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int tmp = rcache_get_tmp(); \
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int tmp_ = rcache_get_tmp(); \
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EMIT_OP(0x0f); \
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EMIT(0x92, u8); \
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EMIT_MODRM(3, 0, tmp); /* SETC */ \
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EMIT_MODRM(3, 0, tmp_); /* SETC */ \
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emith_bic_r_imm(srr, 1); \
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EMIT_OP_MODRM(0x08, 3, tmp, srr); /* OR srrl, tmpl */ \
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rcache_free_tmp(tmp); \
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EMIT_OP_MODRM(0x08, 3, tmp_, srr); /* OR srrl, tmpl */ \
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rcache_free_tmp(tmp_); \
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}
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