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softmmu: remove useless condition in watchpoint check

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cpu_check_watchpoint function checks cpu->watchpoint_hit at the entry.
But then it also does the same in the middle of the function,
while this field can't change.
That is why this patch removes this useless condition.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <163542169094.2127597.8801843697434113110.stgit@pasha-ThinkPad-X280>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Pavel Dovgalyuk 2021-10-28 14:48:10 +03:00 • committed by Richard Henderson
parent 9f660c077b
commit 1ab0ba8ab5
1 changed files with 19 additions and 20 deletions
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39
softmmu/physmem.c
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@ -929,27 +929,26 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
}
wp->hitaddr = MAX(addr, wp->vaddr);
wp->hitattrs = attrs;
if (!cpu->watchpoint_hit) {
if (wp->flags & BP_CPU && cc->tcg_ops->debug_check_watchpoint &&
!cc->tcg_ops->debug_check_watchpoint(cpu, wp)) {
wp->flags &= ~BP_WATCHPOINT_HIT;
continue;
}
cpu->watchpoint_hit = wp;
mmap_lock();
/* This call also restores vCPU state */
tb_check_watchpoint(cpu, ra);
if (wp->flags & BP_STOP_BEFORE_ACCESS) {
cpu->exception_index = EXCP_DEBUG;
mmap_unlock();
cpu_loop_exit(cpu);
} else {
/* Force execution of one insn next time. */
cpu->cflags_next_tb = 1 | curr_cflags(cpu);
mmap_unlock();
cpu_loop_exit_noexc(cpu);
}
if (wp->flags & BP_CPU && cc->tcg_ops->debug_check_watchpoint &&
!cc->tcg_ops->debug_check_watchpoint(cpu, wp)) {
wp->flags &= ~BP_WATCHPOINT_HIT;
continue;
}
cpu->watchpoint_hit = wp;
mmap_lock();
/* This call also restores vCPU state */
tb_check_watchpoint(cpu, ra);
if (wp->flags & BP_STOP_BEFORE_ACCESS) {
cpu->exception_index = EXCP_DEBUG;
mmap_unlock();
cpu_loop_exit(cpu);
} else {
/* Force execution of one insn next time. */
cpu->cflags_next_tb = 1 | curr_cflags(cpu);
mmap_unlock();
cpu_loop_exit_noexc(cpu);
}
} else {
wp->flags &= ~BP_WATCHPOINT_HIT;