On 6/6/23 06:27, Ilya Leoshkevich wrote:
/proc/self/smaps is an extension of /proc/self/maps: it provides the
same lines, plus additional information about each range.
GDB uses /proc/self/smaps when available, which means that
generate-core-file tries it first before falling back to
/proc/self/maps. This, in turn, causes it to dump the host mappings,
since /proc/self/smaps is not emulated and is just passed through.
Fix by emulating /proc/self/smaps. Provide true values only for
Size, KernelPageSize, MMUPageSize and VmFlags. Leave all other values
at 0, which is a valid conservative estimate.
Signed-off-by: Ilya Leoshkevich<i...@linux.ibm.com>
---
linux-user/syscall.c | 58 +++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 57 insertions(+), 1 deletion(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
+ if (smaps) {
+ show_smaps(fd, max - min);
+ dprintf(fd, "VmFlags:%s%s%s%s%s%s%s%s\n",
+ (flags & PAGE_READ) ? " rd" : "",
+ (flags & PAGE_WRITE_ORG) ? " wr" : "",
+ (flags & PAGE_EXEC) ? " ex" : "",
+ e->is_priv ? "" : " sh",
+ (flags & PAGE_READ) ? " mr" : "",
+ (flags & PAGE_WRITE_ORG) ? " mw" : "",
+ (flags & PAGE_EXEC) ? " me" : "",
+ e->is_priv ? "" : " ms");
+ }
There are a couple of AArch64 specific bits here, which we emulate.
But this is good enough for now.
r~
