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 09:59:01 -0300 |
| commit | d952c6efaa87c6973819bcb74712b86fc35a033e (patch) | |
| tree | 3a8124520fc32dfacc25dbcdf98772c3eab8fd81 | |
| parent | 515d4166f4dbcf43b1568e3f63a19d9a92b2d50e (diff) | |
| download | glibc-d952c6efaa87c6973819bcb74712b86fc35a033e.zip glibc-d952c6efaa87c6973819bcb74712b86fc35a033e.tar.gz glibc-d952c6efaa87c6973819bcb74712b86fc35a033e.tar.bz2 | |
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>
(cherry picked from commit 404526ee2e58f3c075253943ddc9988f4bd6b80c)
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/start.S | 4 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/start.S | 4 |
3 files changed, 10 insertions, 0 deletions
@@ -29,6 +29,8 @@ The following bugs were resolved with this release: [32882] tst-audit10 fails with SIGILL on CPUs without AVX [32897] dynamic-link: pthread_getattr_np fails when executable stack tunable is set + [32981] ports: elf/tst-execstack-prog-static-tunable fails on + sparc64-linux-gnu [32987] elf: Fix subprocess status handling for tst-dlopen-sgid Version 2.41 diff --git a/sysdeps/sparc/sparc32/start.S b/sysdeps/sparc/sparc32/start.S index 694b020..cef7c96 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 c9c25c2..08e1e77 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 |