diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2017-06-20 22:51:16 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2017-06-21 21:57:39 +0200 |
| commit | 860b9ac779615fe9315cd58165652052ac165a92 (patch) | |
| tree | d02b68ce0fc199115c1b1e307e057665f999d0b7 | |
| parent | 8dfaf23ae1f2273a9730a9b309cc8471269bb524 (diff) | |
target-m68k: move fmove CR to a function
Move code of fmove to/from control register to a function
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170620205121.26515-2-laurent@vivier.eu>
| -rw-r--r-- | target/m68k/translate.c | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/target/m68k/translate.c b/target/m68k/translate.c index dfecfb6e5f..c9a5fe4b17 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -4099,6 +4099,35 @@ DISAS_INSN(trap) gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); } +static void gen_op_fmove_fcr(CPUM68KState *env, DisasContext *s, + uint32_t insn, uint32_t ext) +{ + int mask = (ext >> 10) & 7; + int is_write = (ext >> 13) & 1; + TCGv val; + + switch (mask) { + case 1: /* FPIAR */ + case 2: /* FPSR */ + default: + qemu_log_mask(LOG_UNIMP, "Unimplemented: fmove to/from control %d", + mask); + goto undef; + case 4: /* FPCR */ + if (is_write) { + val = tcg_const_i32(0); + DEST_EA(env, insn, OS_LONG, val, NULL); + tcg_temp_free(val); + } + /* Not implemented. Ignore register update */ + break; + } + return; +undef: + s->pc -= 2; + disas_undef_fpu(env, s, insn); +} + /* ??? FP exceptions are not implemented. Most exceptions are deferred until immediately before the next FP instruction is executed. */ DISAS_INSN(fpu) @@ -4177,32 +4206,9 @@ DISAS_INSN(fpu) tcg_temp_free_i32(tmp32); return; case 4: /* fmove to control register. */ - switch ((ext >> 10) & 7) { - case 4: /* FPCR */ - /* Not implemented. Ignore writes. */ - break; - case 1: /* FPIAR */ - case 2: /* FPSR */ - default: - cpu_abort(NULL, "Unimplemented: fmove to control %d", - (ext >> 10) & 7); - } - break; case 5: /* fmove from control register. */ - switch ((ext >> 10) & 7) { - case 4: /* FPCR */ - /* Not implemented. Always return zero. */ - tmp32 = tcg_const_i32(0); - break; - case 1: /* FPIAR */ - case 2: /* FPSR */ - default: - cpu_abort(NULL, "Unimplemented: fmove from control %d", - (ext >> 10) & 7); - goto undef; - } - DEST_EA(env, insn, OS_LONG, tmp32, NULL); - break; + gen_op_fmove_fcr(env, s, insn, ext); + return; case 6: /* fmovem */ case 7: { |