diff options
Diffstat (limited to 'winsup/cygwin/miscfuncs.cc')
| -rw-r--r-- | winsup/cygwin/miscfuncs.cc | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/winsup/cygwin/miscfuncs.cc b/winsup/cygwin/miscfuncs.cc index 10bf4f7e9..5f0625447 100644 --- a/winsup/cygwin/miscfuncs.cc +++ b/winsup/cygwin/miscfuncs.cc @@ -516,33 +516,33 @@ thread_wrapper (VOID *arg) } __asm__ ("\n\ - movl %[WRAPPER_ARG], %%ebx # Load &wrapper_arg into ebx \n\ - movl (%%ebx), %%eax # Load thread func into eax \n\ - movl 4(%%ebx), %%ecx # Load thread arg into ecx \n\ - movl 8(%%ebx), %%edx # Load stackaddr into edx \n\ - movl 12(%%ebx), %%ebx # Load stackbase into ebx \n\ - subl %[CYGTLS], %%ebx # Subtract CYGTLS_PADSIZE \n\ - subl $4, %%ebx # Subtract another 4 bytes \n\ - movl %%ebx, %%esp # Set esp \n\ - xorl %%ebp, %%ebp # Set ebp to 0 \n\ - # Make gcc 3.x happy and align the stack so that it is \n\ - # 16 byte aligned right before the final call opcode. \n\ - andl $-16, %%esp # 16 byte align \n\ - addl $-12, %%esp # 12 bytes + 4 byte arg = 16 \n\ - # Now we moved to the new stack. Save thread func address\n\ - # and thread arg on new stack \n\ - pushl %%ecx # Push thread arg onto stack \n\ - pushl %%eax # Push thread func onto stack \n\ - # Now it's safe to release the OS stack. \n\ - pushl $0x8000 # dwFreeType: MEM_RELEASE \n\ - pushl $0x0 # dwSize: 0 \n\ - pushl %%edx # lpAddress: stackaddr \n\ - call _VirtualFree@12 # Shoot \n\ - # All set. We can pop the thread function address from \n\ - # the stack and call it. The thread arg is still on the \n\ - # stack in the expected spot. \n\ - popl %%eax # Pop thread_func address \n\ - call *%%eax # Call thread func \n" + movl %[WRAPPER_ARG], %%ebx # Load &wrapper_arg into ebx \n\ + movl (%%ebx), %%eax # Load thread func into eax \n\ + movl 4(%%ebx), %%ecx # Load thread arg into ecx \n\ + movl 8(%%ebx), %%edx # Load stackaddr into edx \n\ + movl 12(%%ebx), %%ebx # Load stackbase into ebx \n\ + subl %[CYGTLS], %%ebx # Subtract CYGTLS_PADSIZE \n\ + subl $4, %%ebx # Subtract another 4 bytes \n\ + movl %%ebx, %%esp # Set esp \n\ + xorl %%ebp, %%ebp # Set ebp to 0 \n\ + # Make gcc 3.x happy and align the stack so that it is \n\ + # 16 byte aligned right before the final call opcode. \n\ + andl $-16, %%esp # 16 byte align \n\ + addl $-12, %%esp # 12 bytes + 4 byte arg = 16 \n\ + # Now we moved to the new stack. Save thread func address \n\ + # and thread arg on new stack \n\ + pushl %%ecx # Push thread arg onto stack \n\ + pushl %%eax # Push thread func onto stack \n\ + # Now it's safe to release the OS stack. \n\ + pushl $0x8000 # dwFreeType: MEM_RELEASE \n\ + pushl $0x0 # dwSize: 0 \n\ + pushl %%edx # lpAddress: stackaddr \n\ + call _VirtualFree@12 # Shoot \n\ + # All set. We can pop the thread function address from \n\ + # the stack and call it. The thread arg is still on the \n\ + # stack in the expected spot. \n\ + popl %%eax # Pop thread_func address \n\ + call *%%eax # Call thread func \n" : : [WRAPPER_ARG] "r" (&wrapper_arg), [CYGTLS] "i" (CYGTLS_PADSIZE)); /* Never return from here. */ |