linux-stable/arch/x86/vdso/vdso32.S
Jeremy Fitzhardinge 6a52e4b1cd x86_64: further cleanup of 32-bit compat syscall mechanisms
AMD only supports "syscall" from 32-bit compat usermode.
Intel and Centaur(?) only support "sysenter" from 32-bit compat usermode.

Set the X86 feature bits accordingly, and set up the vdso in
accordance with those bits.  On the offchance we run on in a 64-bit
environment which supports neither syscall nor sysenter from 32-bit
mode, then fall back to the int $0x80 vdso.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-16 11:08:27 +02:00

22 lines
473 B
ArmAsm

#include <linux/init.h>
__INITDATA
.globl vdso32_int80_start, vdso32_int80_end
vdso32_int80_start:
.incbin "arch/x86/vdso/vdso32-int80.so"
vdso32_int80_end:
.globl vdso32_syscall_start, vdso32_syscall_end
vdso32_syscall_start:
#ifdef CONFIG_COMPAT
.incbin "arch/x86/vdso/vdso32-syscall.so"
#endif
vdso32_syscall_end:
.globl vdso32_sysenter_start, vdso32_sysenter_end
vdso32_sysenter_start:
.incbin "arch/x86/vdso/vdso32-sysenter.so"
vdso32_sysenter_end:
__FINIT