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target-mips: fix detection of the end of the page during translation

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The test is supposed to terminate TB if the end of the page is reached.
However, with current implementation it may never succeed for microMIPS or
mips16.

Reported-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Leon Alrae 2015-01-26 15:53:16 +00:00
parent 196a7958c6
commit fe2372910a
1 changed files with 4 additions and 1 deletions
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5
target-mips/translate.c
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@ -19095,6 +19095,7 @@ gen_intermediate_code_internal(MIPSCPU *cpu, TranslationBlock *tb,
CPUMIPSState *env = &cpu->env;
DisasContext ctx;
target_ulong pc_start;
target_ulong next_page_start;
CPUBreakpoint *bp;
int j, lj = -1;
int num_insns;
@ -19106,6 +19107,7 @@ gen_intermediate_code_internal(MIPSCPU *cpu, TranslationBlock *tb,
qemu_log("search pc %d\n", search_pc);
pc_start = tb->pc;
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
ctx.pc = pc_start;
ctx.saved_pc = -1;
ctx.singlestep_enabled = cs->singlestep_enabled;
@ -19204,8 +19206,9 @@ gen_intermediate_code_internal(MIPSCPU *cpu, TranslationBlock *tb,
break;
}
if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0)
if (ctx.pc >= next_page_start) {
break;
}
if (tcg_op_buf_full()) {
break;