2 * Code for the vsyscall page. This version uses the old int $0x80 method.
5 * 1) __kernel_vsyscall _must_ be first in this page.
6 * 2) there are alignment constraints on this stub, see vsyscall-sigreturn.S
11 .globl __kernel_vsyscall
12 .type __kernel_vsyscall,@function
18 .size __kernel_vsyscall,.-.LSTART_vsyscall
21 .section .eh_frame,"a",@progbits
23 .long .LENDCIEDLSI-.LSTARTCIEDLSI
26 .byte 1 /* Version number */
27 .string "zR" /* NUL-terminated augmentation string */
28 .uleb128 1 /* Code alignment factor */
29 .sleb128 -4 /* Data alignment factor */
30 .byte 8 /* Return address register column */
31 .uleb128 1 /* Augmentation value length */
32 .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
33 .byte 0x0c /* DW_CFA_def_cfa */
36 .byte 0x88 /* DW_CFA_offset, column 0x8 */
40 .long .LENDFDEDLSI-.LSTARTFDEDLSI /* Length FDE */
42 .long .LSTARTFDEDLSI-.LSTARTFRAMEDLSI /* CIE pointer */
43 .long .LSTART_vsyscall-. /* PC-relative start address */
44 .long .LEND_vsyscall-.LSTART_vsyscall
51 * Get the common code for the sigreturn entry points.
53 #include "vsyscall-sigreturn.S"