diff options
Diffstat (limited to 'target/nios2/translate.c')
| -rw-r--r-- | target/nios2/translate.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/target/nios2/translate.c b/target/nios2/translate.c index a3c63dbbbd..86978ba47a 100644 --- a/target/nios2/translate.c +++ b/target/nios2/translate.c @@ -71,6 +71,18 @@ typedef struct { .a = extract32((code), 27, 5), \ } +typedef target_ulong ImmFromIType(const InstrIType *); + +static target_ulong imm_unsigned(const InstrIType *i) +{ + return i->imm16.u; +} + +static target_ulong imm_signed(const InstrIType *i) +{ + return i->imm16.s; +} + /* R-Type instruction parsing */ typedef struct { uint8_t op; @@ -268,15 +280,23 @@ static void gen_bxx(DisasContext *dc, uint32_t code, uint32_t flags) } /* Comparison instructions */ -#define gen_i_cmpxx(fname, op3) \ -static void (fname)(DisasContext *dc, uint32_t code, uint32_t flags) \ -{ \ - I_TYPE(instr, (code)); \ - tcg_gen_setcondi_tl(flags, cpu_R[instr.b], cpu_R[instr.a], (op3)); \ +static void do_i_cmpxx(DisasContext *dc, uint32_t insn, + TCGCond cond, ImmFromIType *imm) +{ + I_TYPE(instr, insn); + + if (likely(instr.b != R_ZERO)) { + tcg_gen_setcondi_tl(cond, cpu_R[instr.b], + load_gpr(dc, instr.a), imm(&instr)); + } } -gen_i_cmpxx(gen_cmpxxsi, instr.imm16.s) -gen_i_cmpxx(gen_cmpxxui, instr.imm16.u) +#define gen_i_cmpxx(fname, imm) \ + static void (fname)(DisasContext *dc, uint32_t code, uint32_t flags) \ + { do_i_cmpxx(dc, code, flags, imm); } + +gen_i_cmpxx(gen_cmpxxsi, imm_signed) +gen_i_cmpxx(gen_cmpxxui, imm_unsigned) /* Math/logic instructions */ #define gen_i_math_logic(fname, insn, resimm, op3) \ |