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OpenCloudOS-Kernel
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um: Remove dead code from x86_64 syscall stub 

syscall_stub is dead code as um is using only
batch_syscall_stub.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2015-10-25 21:41:10 +01:00
parent f10e6d652b
commit ec2c6c01ff
1 changed files with 0 additions and 13 deletions
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13
arch/x86/um/stub_64.S
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@ -1,19 +1,6 @@
#include <as-layout.h>
.globl syscall_stub
.section .__syscall_stub, "ax"
syscall_stub:
syscall
/* We don't have 64-bit constants, so this constructs the address
* we need.
*/
movq $(STUB_DATA >> 32), %rbx
salq $32, %rbx
movq $(STUB_DATA & 0xffffffff), %rcx
or %rcx, %rbx
movq %rax, (%rbx)
int3
.globl batch_syscall_stub
batch_syscall_stub:
mov $(STUB_DATA >> 32), %rbx