diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-05-30 12:40:04 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-06-03 09:11:46 -0300 |
| commit | 404526ee2e58f3c075253943ddc9988f4bd6b80c (patch) | |
| tree | 03558ffaffe1cdaff5bf35c08b7f11419eab5f19 /sysdeps/sparc | |
| parent | d475e5bf4f1e0628354c45fb830388a92f7d1181 (diff) | |
sparc: Fix argument passing to __libc_start_main (BZ 32981)
sparc start.S does not provide the final argument for
__libc_start_main, which is the highest stack address used to
update the __libc_stack_end.A
This fixes elf/tst-execstack-prog-static-tunable on sparc64.
On sparcv9 this does not happen because the kernel puts an
auxv value, which turns to point to a value in the stack itself.
Checked on sparc64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'sysdeps/sparc')
| -rw-r--r-- | sysdeps/sparc/sparc32/start.S | 4 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/start.S | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc32/start.S b/sysdeps/sparc/sparc32/start.S index 694b020ce0..cef7c96cac 100644 --- a/sysdeps/sparc/sparc32/start.S +++ b/sysdeps/sparc/sparc32/start.S @@ -73,6 +73,10 @@ _start: be NULL. */ mov %g1, %o5 + /* Provide the highest stack address to update the __libc_stack_end (used + to enable executable stacks if required). */ + st %sp, [%sp+23*4] + /* Let libc do the rest of the initialization, and call main. */ call __libc_start_main nop diff --git a/sysdeps/sparc/sparc64/start.S b/sysdeps/sparc/sparc64/start.S index c9c25c2e47..08e1e77210 100644 --- a/sysdeps/sparc/sparc64/start.S +++ b/sysdeps/sparc/sparc64/start.S @@ -74,6 +74,10 @@ _start: be NULL. */ mov %g1, %o5 + /* Provide the highest stack address to update the __libc_stack_end (used + to enable executable stacks if required). */ + stx %sp, [%sp+STACK_BIAS+22*8] + /* Let libc do the rest of the initialization, and call main. */ call __libc_start_main nop |