diff options
Diffstat (limited to 'results/classifier/zero-shot-user-mode/instruction/2499')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/instruction/2499 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/instruction/2499 b/results/classifier/zero-shot-user-mode/instruction/2499 new file mode 100644 index 00000000..501b5804 --- /dev/null +++ b/results/classifier/zero-shot-user-mode/instruction/2499 @@ -0,0 +1,36 @@ +instruction: 0.827 +runtime: 0.117 +syscall: 0.056 + + + +m68k: fpu: fsave/frestore should be enabled for 68020/68030 +Description of problem: +valid 68020/68030 code can use `fsave`/`frestore` instructions to save/restore the state of an external 68881/68882 but currently QEMU only allows these instructions on 68040 and everyone else gets an f-line exception. + +I guess something like this to allow frestore/fsave. m68k programmers reference manual says they are 68881/68882/68040 and there don's seem to be any differences. + +``` diff +diff --git a/target/m68k/translate.c b/target/m68k/translate.c +index d5d2322329..92dc9d8563 100644 +--- a/target/m68k/translate.c ++++ b/target/m68k/translate.c +@@ -5455,7 +5455,7 @@ DISAS_INSN(frestore) + gen_exception(s, s->base.pc_next, EXCP_PRIVILEGE); + return; + } +- if (m68k_feature(s->env, M68K_FEATURE_M68040)) { ++ if (m68k_feature(s->env, M68K_FEATURE_FPU)) { + SRC_EA(env, addr, OS_LONG, 0, NULL); + /* FIXME: check the state frame */ + } else { +@@ -5472,7 +5472,7 @@ DISAS_INSN(fsave) + return; + } + +- if (m68k_feature(s->env, M68K_FEATURE_M68040)) { ++ if (m68k_feature(s->env, M68K_FEATURE_FPU)) { + /* always write IDLE */ + TCGv idle = tcg_constant_i32(0x41000000); + DEST_EA(env, insn, OS_LONG, idle, NULL); +``` |