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author | Laurent Vivier <laurent@vivier.eu> | 2018-01-04 02:29:11 +0100 |
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committer | Laurent Vivier <laurent@vivier.eu> | 2018-01-04 17:24:35 +0100 |
commit | b5ae1edc294f78865ede38377c0a9b92da4370e0 (patch) | |
tree | 6499d1db29de05ac3ad267559735954372adcbb3 /target | |
parent | b6a21d8d8f69ac04fd6180e752a65d582c07e948 (diff) | |
download | qemu-b5ae1edc294f78865ede38377c0a9b92da4370e0.zip qemu-b5ae1edc294f78865ede38377c0a9b92da4370e0.tar.gz qemu-b5ae1edc294f78865ede38377c0a9b92da4370e0.tar.bz2 |
target/m68k: add andi/ori/eori to SR/CCR
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-16-laurent@vivier.eu>
Diffstat (limited to 'target')
-rw-r--r-- | target/m68k/translate.c | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 8f23cad..499aaa2 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -2201,6 +2201,7 @@ DISAS_INSN(arith_im) TCGv dest; TCGv addr; int opsize; + bool with_SR = ((insn & 0x3f) == 0x3c); op = (insn >> 9) & 7; opsize = insn_opsize(insn); @@ -2217,32 +2218,73 @@ DISAS_INSN(arith_im) default: abort(); } - SRC_EA(env, src1, opsize, 1, (op == 6) ? NULL : &addr); + + if (with_SR) { + /* SR/CCR can only be used with andi/eori/ori */ + if (op == 2 || op == 3 || op == 6) { + disas_undef(env, s, insn); + return; + } + switch (opsize) { + case OS_BYTE: + src1 = gen_get_ccr(s); + break; + case OS_WORD: + if (IS_USER(s)) { + gen_exception(s, s->insn_pc, EXCP_PRIVILEGE); + return; + } + src1 = gen_get_sr(s); + break; + case OS_LONG: + disas_undef(env, s, insn); + return; + } + } else { + SRC_EA(env, src1, opsize, 1, (op == 6) ? NULL : &addr); + } dest = tcg_temp_new(); switch (op) { case 0: /* ori */ tcg_gen_or_i32(dest, src1, im); - gen_logic_cc(s, dest, opsize); + if (with_SR) { + gen_set_sr(s, dest, opsize == OS_BYTE); + } else { + DEST_EA(env, insn, opsize, dest, &addr); + gen_logic_cc(s, dest, opsize); + } break; case 1: /* andi */ tcg_gen_and_i32(dest, src1, im); - gen_logic_cc(s, dest, opsize); + if (with_SR) { + gen_set_sr(s, dest, opsize == OS_BYTE); + } else { + DEST_EA(env, insn, opsize, dest, &addr); + gen_logic_cc(s, dest, opsize); + } break; case 2: /* subi */ tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, src1, im); tcg_gen_sub_i32(dest, src1, im); gen_update_cc_add(dest, im, opsize); set_cc_op(s, CC_OP_SUBB + opsize); + DEST_EA(env, insn, opsize, dest, &addr); break; case 3: /* addi */ tcg_gen_add_i32(dest, src1, im); gen_update_cc_add(dest, im, opsize); tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, dest, im); set_cc_op(s, CC_OP_ADDB + opsize); + DEST_EA(env, insn, opsize, dest, &addr); break; case 5: /* eori */ tcg_gen_xor_i32(dest, src1, im); - gen_logic_cc(s, dest, opsize); + if (with_SR) { + gen_set_sr(s, dest, opsize == OS_BYTE); + } else { + DEST_EA(env, insn, opsize, dest, &addr); + gen_logic_cc(s, dest, opsize); + } break; case 6: /* cmpi */ gen_update_cc_cmp(s, src1, im, opsize); @@ -2251,9 +2293,6 @@ DISAS_INSN(arith_im) abort(); } tcg_temp_free(im); - if (op != 6) { - DEST_EA(env, insn, opsize, dest, &addr); - } tcg_temp_free(dest); } |