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[PATCH v6 02/14] target/ppc: Move page crossing check to ppc_tr_translat
From: |
matheus . ferst |
Subject: |
[PATCH v6 02/14] target/ppc: Move page crossing check to ppc_tr_translate_insn |
Date: |
Tue, 1 Jun 2021 16:35:16 -0300 |
From: Richard Henderson <richard.henderson@linaro.org>
With prefixed instructions, the number of instructions
remaining until the page crossing is no longer constant.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
target/ppc/translate.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 11fd3342a0..d2c9fd9dd7 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -8821,9 +8821,6 @@ static void ppc_tr_init_disas_context(DisasContextBase
*dcbase, CPUState *cs)
if (ctx->singlestep_enabled & (CPU_SINGLE_STEP | GDBSTUB_SINGLE_STEP)) {
ctx->base.max_insns = 1;
- } else {
- int bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
- ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
}
}
@@ -8874,6 +8871,12 @@ static void ppc_tr_translate_insn(DisasContextBase
*dcbase, CPUState *cs)
gen_invalid(ctx);
}
+ /* End the TB when crossing a page boundary. */
+ if (ctx->base.is_jmp == DISAS_NEXT &&
+ !(ctx->base.pc_next & ~TARGET_PAGE_MASK)) {
+ ctx->base.is_jmp = DISAS_TOO_MANY;
+ }
+
translator_loop_temp_check(&ctx->base);
}
--
2.25.1
- [PATCH v6 00/14] Base for adding PowerPC 64-bit instructions, matheus . ferst, 2021/06/01
- [PATCH v6 01/14] target/ppc: Introduce macros to check isa extensions, matheus . ferst, 2021/06/01
- [PATCH v6 02/14] target/ppc: Move page crossing check to ppc_tr_translate_insn,
matheus . ferst <=
- [PATCH v6 03/14] target/ppc: Add infrastructure for prefixed insns, matheus . ferst, 2021/06/01
- [PATCH v6 04/14] target/ppc: Move ADDI, ADDIS to decodetree, implement PADDI, matheus . ferst, 2021/06/01
- [PATCH v6 05/14] target/ppc: Implement PNOP, matheus . ferst, 2021/06/01
- [PATCH v6 06/14] target/ppc: Move D/DS/X-form integer loads to decodetree, matheus . ferst, 2021/06/01
- [PATCH v6 07/14] target/ppc: Implement prefixed integer load instructions, matheus . ferst, 2021/06/01
- [PATCH v6 08/14] target/ppc: Move D/DS/X-form integer stores to decodetree, matheus . ferst, 2021/06/01
- [PATCH v6 09/14] target/ppc: Implement prefixed integer store instructions, matheus . ferst, 2021/06/01
- [PATCH v6 10/14] target/ppc: Implement setbc/setbcr/stnbc/setnbcr instructions, matheus . ferst, 2021/06/01
- [PATCH v6 11/14] target/ppc: Implement cfuged instruction, matheus . ferst, 2021/06/01