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[PATCH v6 11/17] target/m68k: Implement TPF in terms of TRAPcc
From: |
Richard Henderson |
Subject: |
[PATCH v6 11/17] target/m68k: Implement TPF in terms of TRAPcc |
Date: |
Wed, 1 Jun 2022 18:33:55 -0700 |
TPF stands for "trap false", and is a long-form nop for ColdFire.
Re-use the immediate consumption code from trapcc; the insn will
already expand to a nop because of the TCG_COND_NEVER test
within do_trapcc.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/m68k/translate.c | 19 ++-----------------
1 file changed, 2 insertions(+), 17 deletions(-)
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 61b624b3a1..83c2f73063 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -3075,22 +3075,6 @@ DISAS_INSN(addsubq)
tcg_temp_free(dest);
}
-DISAS_INSN(tpf)
-{
- switch (insn & 7) {
- case 2: /* One extension word. */
- s->pc += 2;
- break;
- case 3: /* Two extension words. */
- s->pc += 4;
- break;
- case 4: /* No extension words. */
- break;
- default:
- disas_undef(env, s, insn);
- }
-}
-
DISAS_INSN(branch)
{
int32_t offset;
@@ -6099,7 +6083,8 @@ void register_m68k_insns (CPUM68KState *env)
INSN(dbcc, 50c8, f0f8, M68000);
INSN(trapcc, 50fa, f0fe, TRAPCC); /* opmode 010, 011 */
INSN(trapcc, 50fc, f0ff, TRAPCC); /* opmode 100 */
- INSN(tpf, 51f8, fff8, CF_ISA_A);
+ INSN(trapcc, 51fa, fffe, CF_ISA_A); /* TPF (trapf) opmode 010, 011 */
+ INSN(trapcc, 51fc, ffff, CF_ISA_A); /* TPF (trapf) opmode 100 */
/* Branch instructions. */
BASE(branch, 6000, f000);
--
2.34.1
- [PATCH v6 07/17] target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0, (continued)
- [PATCH v6 07/17] target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0, Richard Henderson, 2022/06/01
- [PATCH v6 08/17] target/m68k: Fix address argument for EXCP_TRACE, Richard Henderson, 2022/06/01
- [PATCH v6 06/17] target/m68k: Fix address argument for EXCP_CHK, Richard Henderson, 2022/06/01
- [PATCH v6 09/17] target/m68k: Fix stack frame for EXCP_ILLEGAL, Richard Henderson, 2022/06/01
- [PATCH v6 10/17] target/m68k: Implement TRAPcc, Richard Henderson, 2022/06/01
- [PATCH v6 12/17] target/m68k: Implement TRAPV, Richard Henderson, 2022/06/01
- [PATCH v6 13/17] target/m68k: Implement FTRAPcc, Richard Henderson, 2022/06/01
- [PATCH v6 15/17] linux-user/strace: Use is_error in print_syscall_err, Richard Henderson, 2022/06/01
- [PATCH v6 17/17] target/m68k: Mark helper_raise_exception as noreturn, Richard Henderson, 2022/06/01
- [PATCH v6 16/17] linux-user/strace: Adjust get_thread_area for m68k, Richard Henderson, 2022/06/01
- [PATCH v6 11/17] target/m68k: Implement TPF in terms of TRAPcc,
Richard Henderson <=
- [PATCH v6 14/17] tests/tcg/m68k: Add trap.c, Richard Henderson, 2022/06/01
- Re: [PATCH v6 00/17] target/m68k: Conditional traps + trap cleanup, Laurent Vivier, 2022/06/02