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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-07 17:51:21 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-07 23:36:10 +0000 |
| commit | 337a7b74faed2c8daf8c91cbb3038dc4984f3207 (patch) | |
| tree | 425207379c84774e80d8000ba3a087d710d51e45 | |
| parent | 4bab9ad854b50fab23eacf29550325552e7a9f4b (diff) | |
| download | glibc-337a7b74faed2c8daf8c91cbb3038dc4984f3207.tar.gz glibc-337a7b74faed2c8daf8c91cbb3038dc4984f3207.tar.xz glibc-337a7b74faed2c8daf8c91cbb3038dc4984f3207.zip | |
hurd: Fix unwinding over interruptible RPC
* sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Set CFA register to %ecx while %esp is altered.
| -rw-r--r-- | sysdeps/mach/hurd/i386/intr-msg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/i386/intr-msg.h b/sysdeps/mach/hurd/i386/intr-msg.h index 54420fed01..70e6cc6592 100644 --- a/sysdeps/mach/hurd/i386/intr-msg.h +++ b/sysdeps/mach/hurd/i386/intr-msg.h @@ -37,10 +37,12 @@ " movl %6, %%eax\n" \ " jmp _hurd_intr_rpc_msg_sp_restored\n" \ "_hurd_intr_rpc_msg_do: movl %%esp, %%ecx\n" \ + " .cfi_def_cfa_register %%ecx\n" \ " leal %4, %%esp\n" \ "_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\n" \ "_hurd_intr_rpc_msg_do_trap: lcall $7, $0 # status in %0\n" \ "_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \ + " .cfi_def_cfa_register %%esp\n" \ "_hurd_intr_rpc_msg_sp_restored:" \ : "=a" (err), "+m" (option), "+m" (timeout), "=m" (*intr_port_p) \ : "m" ((&msg)[-1]), "m" (*cancel_p), "i" (EINTR) \ |