diff options
Diffstat (limited to 'target-alpha/translate.c')
| -rw-r--r-- | target-alpha/translate.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/target-alpha/translate.c b/target-alpha/translate.c index 4321a25eeb..924fc706ae 100644 --- a/target-alpha/translate.c +++ b/target-alpha/translate.c @@ -74,7 +74,11 @@ typedef enum { /* We are exiting the TB, but have neither emitted a goto_tb, nor updated the PC for the next instruction to be executed. */ - EXIT_PC_STALE + EXIT_PC_STALE, + + /* We are ending the TB with a noreturn function call, e.g. longjmp. + No following code will be executed. */ + EXIT_NORETURN, } ExitStatus; /* global register indexes */ @@ -134,7 +138,7 @@ static void alpha_translate_init(void) done_init = 1; } -static inline void gen_excp(DisasContext *ctx, int exception, int error_code) +static ExitStatus gen_excp(DisasContext *ctx, int exception, int error_code) { TCGv_i32 tmp1, tmp2; @@ -144,11 +148,13 @@ static inline void gen_excp(DisasContext *ctx, int exception, int error_code) gen_helper_excp(tmp1, tmp2); tcg_temp_free_i32(tmp2); tcg_temp_free_i32(tmp1); + + return EXIT_NORETURN; } -static inline void gen_invalid(DisasContext *ctx) +static inline ExitStatus gen_invalid(DisasContext *ctx) { - gen_excp(ctx, EXCP_OPCDEC, 0); + return gen_excp(ctx, EXCP_OPCDEC, 0); } static inline void gen_qemu_ldf(TCGv t0, TCGv t1, int flags) @@ -1457,9 +1463,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn) #endif if (palcode >= 0x80 && palcode < 0xC0) { /* Unprivileged PAL call */ - gen_excp(ctx, EXCP_CALL_PAL + ((palcode & 0x3F) << 6), 0); - /* PC updated by gen_excp. */ - ret = EXIT_PC_UPDATED; + ret = gen_excp(ctx, EXCP_CALL_PAL + ((palcode & 0x3F) << 6), 0); break; } #ifndef CONFIG_USER_ONLY @@ -1467,7 +1471,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn) /* Privileged PAL code */ if (ctx->mem_idx & 1) goto invalid_opc; - gen_excp(ctx, EXCP_CALL_PALP + ((palcode & 0x3F) << 6), 0); + ret = gen_excp(ctx, EXCP_CALL_PALP + ((palcode & 0x3F) << 6), 0); } #endif /* Invalid PAL call */ @@ -3075,9 +3079,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn) ret = gen_bcond(ctx, TCG_COND_GT, ra, disp21, 0); break; invalid_opc: - gen_invalid(ctx); - /* PC updated by gen_excp. */ - ret = EXIT_PC_UPDATED; + ret = gen_invalid(ctx); break; } @@ -3181,6 +3183,7 @@ static inline void gen_intermediate_code_internal(CPUState *env, switch (ret) { case EXIT_GOTO_TB: + case EXIT_NORETURN: break; case EXIT_PC_STALE: tcg_gen_movi_i64(cpu_pc, ctx.pc); |