qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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.
This commit is contained in:
Samuel Thibault 2020-06-07 17:51:21 +00:00
parent 4bab9ad854
commit 337a7b74fa
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sysdeps/mach/hurd/i386/intr-msg.h
View File

@ -37,10 +37,12 @@
" movl %6, %%eax\n" \ " movl %6, %%eax\n" \
" jmp _hurd_intr_rpc_msg_sp_restored\n" \ " jmp _hurd_intr_rpc_msg_sp_restored\n" \
"_hurd_intr_rpc_msg_do: movl %%esp, %%ecx\n" \ "_hurd_intr_rpc_msg_do: movl %%esp, %%ecx\n" \
" .cfi_def_cfa_register %%ecx\n" \
" leal %4, %%esp\n" \ " leal %4, %%esp\n" \
"_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\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_do_trap: lcall $7, $0 # status in %0\n" \
"_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \ "_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \
" .cfi_def_cfa_register %%esp\n" \
"_hurd_intr_rpc_msg_sp_restored:" \ "_hurd_intr_rpc_msg_sp_restored:" \
: "=a" (err), "+m" (option), "+m" (timeout), "=m" (*intr_port_p) \ : "=a" (err), "+m" (option), "+m" (timeout), "=m" (*intr_port_p) \
: "m" ((&msg)[-1]), "m" (*cancel_p), "i" (EINTR) \ : "m" ((&msg)[-1]), "m" (*cancel_p), "i" (EINTR) \