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[PATCH v2 17/23] target/riscv: Remove dead code after exception
From: |
Richard Henderson |
Subject: |
[PATCH v2 17/23] target/riscv: Remove dead code after exception |
Date: |
Tue, 12 Oct 2021 09:21:53 -0700 |
We have already set DISAS_NORETURN in generate_exception,
which makes the exit_tb unreachable.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/riscv/insn_trans/trans_privileged.c.inc | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/target/riscv/insn_trans/trans_privileged.c.inc
b/target/riscv/insn_trans/trans_privileged.c.inc
index 32312be202..a7afcb15ce 100644
--- a/target/riscv/insn_trans/trans_privileged.c.inc
+++ b/target/riscv/insn_trans/trans_privileged.c.inc
@@ -22,8 +22,6 @@ static bool trans_ecall(DisasContext *ctx, arg_ecall *a)
{
/* always generates U-level ECALL, fixed in do_interrupt handler */
generate_exception(ctx, RISCV_EXCP_U_ECALL);
- exit_tb(ctx); /* no chaining */
- ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
@@ -60,13 +58,11 @@ static bool trans_ebreak(DisasContext *ctx, arg_ebreak *a)
post = opcode_at(&ctx->base, post_addr);
}
- if (pre == 0x01f01013 && ebreak == 0x00100073 && post == 0x40705013) {
+ if (pre == 0x01f01013 && ebreak == 0x00100073 && post == 0x40705013) {
generate_exception(ctx, RISCV_EXCP_SEMIHOST);
} else {
generate_exception(ctx, RISCV_EXCP_BREAKPOINT);
}
- exit_tb(ctx); /* no chaining */
- ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
--
2.25.1
- [PATCH v2 07/23] target/hppa: Drop checks for singlestep_enabled, (continued)
- [PATCH v2 07/23] target/hppa: Drop checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 09/23] target/i386: Drop check for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 11/23] target/microblaze: Check CF_NO_GOTO_TB for DISAS_JUMP, Richard Henderson, 2021/10/12
- [PATCH v2 13/23] target/mips: Fix single stepping, Richard Henderson, 2021/10/12
- [PATCH v2 15/23] target/openrisc: Drop checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 10/23] target/m68k: Drop checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 12/23] target/microblaze: Drop checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 14/23] target/mips: Drop exit checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 17/23] target/riscv: Remove dead code after exception,
Richard Henderson <=
- [PATCH v2 18/23] target/riscv: Remove exit_tb and lookup_and_goto_ptr, Richard Henderson, 2021/10/12
- [PATCH v2 16/23] target/ppc: Drop exit checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 21/23] target/sh4: Drop check for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 22/23] target/tricore: Drop check for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 19/23] target/rx: Drop checks for singlestep_enabled, Richard Henderson, 2021/10/12
- [PATCH v2 20/23] target/s390x: Drop check for singlestep_enabled, Richard Henderson, 2021/10/12