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  • Anton Anton anjo
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  1. Nov 02, 2022
  3. Oct 26, 2022
  5. Oct 25, 2022
    • Helge Deller's avatar
      linux-user: Add guest memory layout to exception dump · bd5ccd61
      Helge Deller authored 
      
When the emulation stops with a hard exception it's very useful for
debugging purposes to dump the current guest memory layout (for an
example see /proc/self/maps) beside the CPU registers.

The open_self_maps() function provides such a memory dump, but since
it's located in the syscall.c file, various changes (add #includes, make
this function externally visible, ...) are needed to be able to call it
from the existing EXCP_DUMP() macro.

This patch takes another approach by re-defining EXCP_DUMP() to call
target_exception_dump(), which is in syscall.c, consolidates the log
print functions and allows to add the call to dump the memory layout.

Beside a reduced code footprint, this approach keeps the changes across
the various callers minimal, and keeps EXCP_DUMP() highlighted as
important macro/function.

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Message-Id: <Y1bzAWbw07WBKPxw@p100>
[lv: remove pc declaration and setting]
Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
      bd5ccd61
  7. Oct 21, 2022
  9. Oct 17, 2022
    • WANG Xuerui's avatar
      linux-user: Fix struct statfs ABI on loongarch64 · 7bf36a5c
      WANG Xuerui authored 
      
Previously the 32-bit version was incorrectly chosen, leading to funny
but incorrect output from e.g. df(1). Simply select the version
corresponding to the 64-bit asm-generic definition.

For reference, this program should produce the same output no matter
natively compiled or not, for loongarch64 or not:

```c
#include <stdio.h>
#include <sys/statfs.h>

int main(int argc, const char *argv[])
{
  struct statfs b;
  if (statfs(argv[0], &b))
    return 1;

  printf("f_type = 0x%lx\n", b.f_type);
  printf("f_bsize = %ld\n", b.f_bsize);
  printf("f_blocks = %ld\n", b.f_blocks);
  printf("f_bfree = %ld\n", b.f_bfree);
  printf("f_bavail = %ld\n", b.f_bavail);

  return 0;
}

// Example output on my amd64 box, with the test binary residing on a
// btrfs partition.

// Native and emulated output after the fix:
//
// f_type = 0x9123683e
// f_bsize = 4096
// f_blocks = 268435456
// f_bfree = 168406890
// f_bavail = 168355058

// Output before the fix, note the messed layout:
//
// f_type = 0x10009123683e
// f_bsize = 723302085239504896
// f_blocks = 168355058
// f_bfree = 2250817541779750912
// f_bavail = 1099229433104
```

Fixes: 1f630196 ("linux-user: Add LoongArch syscall support")
Signed-off-by: default avatarWANG Xuerui <xen0n@gentoo.org>
Cc: Song Gao <gaosong@loongson.cn>
Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Cc: Andreas K. Hüttel <dilfridge@gentoo.org>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: default avatarAndreas K. Huettel <dilfridge@gentoo.org>
Message-Id: <20221006100710.427252-1-xen0n@gentoo.org>
Signed-off-by: default avatarSong Gao <gaosong@loongson.cn>
      7bf36a5c
  11. Oct 11, 2022
  13. Oct 06, 2022
  15. Oct 04, 2022
  17. Sep 28, 2022
  19. Sep 27, 2022