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tcg: Remove needless CPUState::current_tb

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This field was used for telling cpu_interrupt() to unlink a chain of TBs
being executed when it worked that way. Now, cpu_interrupt() don't do
this anymore. So we don't need this field anymore.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Message-Id: <1462273462-14036-1-git-send-email-sergey.fedorov@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Sergey Fedorov 2016-05-03 14:04:22 +03:00 • committed by Richard Henderson
parent a0522c7a55
commit 3213525f8a
7 changed files with 2 additions and 41 deletions
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20
translate-all.c
View file

@ -305,7 +305,6 @@ bool cpu_restore_state(CPUState *cpu, uintptr_t retaddr)
cpu_restore_state_from_tb(cpu, tb, retaddr);
if (tb->cflags & CF_NOCACHE) {
/* one-shot translation, invalidate it immediately */
cpu->current_tb = NULL;
tb_phys_invalidate(tb, -1);
tb_free(tb);
}
@ -1309,9 +1308,9 @@ void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
int is_cpu_write_access)
{
TranslationBlock *tb, *tb_next, *saved_tb;
CPUState *cpu = current_cpu;
TranslationBlock *tb, *tb_next;
#if defined(TARGET_HAS_PRECISE_SMC)
CPUState *cpu = current_cpu;
CPUArchState *env = NULL;
#endif
tb_page_addr_t tb_start, tb_end;
@ -1378,20 +1377,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
&current_flags);
}
#endif /* TARGET_HAS_PRECISE_SMC */
/* we need to do that to handle the case where a signal
occurs while doing tb_phys_invalidate() */
saved_tb = NULL;
if (cpu != NULL) {
saved_tb = cpu->current_tb;
cpu->current_tb = NULL;
}
tb_phys_invalidate(tb, -1);
if (cpu != NULL) {
cpu->current_tb = saved_tb;
if (cpu->interrupt_request && cpu->current_tb) {
cpu_interrupt(cpu, cpu->interrupt_request);
}
}
}
tb = tb_next;
}
@ -1407,7 +1393,6 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
/* we generate a block containing just the instruction
modifying the memory. It will ensure that it cannot modify
itself */
cpu->current_tb = NULL;
tb_gen_code(cpu, current_pc, current_cs_base, current_flags, 1);
cpu_resume_from_signal(cpu, NULL);
}
@ -1512,7 +1497,6 @@ static void tb_invalidate_phys_page(tb_page_addr_t addr,
/* we generate a block containing just the instruction
modifying the memory. It will ensure that it cannot modify
itself */
cpu->current_tb = NULL;
tb_gen_code(cpu, current_pc, current_cs_base, current_flags, 1);
if (locked) {
mmap_unlock();