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linux-user: fix multi-threaded /proc/self/maps 

When reading our faked /proc/self/maps from a secondary thread,
we get an invalid stack entry. This is because ts->stack_base is not
initialized in non-primary threads.

However, ts->info is, and the stack layout information we're looking
for is there too. So let's use that one instead!

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Alexander Graf 2012-05-30 14:45:21 +02:00 committed by Riku Voipio
parent 229d3376a3
commit 1bdd7c7ea8
1 changed files with 2 additions and 2 deletions
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4
linux-user/syscall.c
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@ -4962,8 +4962,8 @@ static int open_self_maps(void *cpu_env, int fd)
#if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
dprintf(fd, "%08llx-%08llx rw-p %08llx 00:00 0 [stack]\n",
(unsigned long long)ts->info->stack_limit,
(unsigned long long)(ts->stack_base + (TARGET_PAGE_SIZE - 1))
& TARGET_PAGE_MASK,
(unsigned long long)(ts->info->start_stack +
(TARGET_PAGE_SIZE - 1)) & TARGET_PAGE_MASK,
(unsigned long long)0);
#endif