projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 69d0627a | 2 | * Code for the vDSO. This version uses the old int $0x80 method. |
| 1da177e4 | 3 | * |
| 69d0627a RM |
4 | * First get the common code for the sigreturn entry points. |
| 5 | * This must come first. | |
| 1da177e4 | 6 | */ |
| 69d0627a | 7 | #include "sigreturn.S" |
| 1da177e4 LT |
8 | |
| 9 | .text | |
| 10 | .globl __kernel_vsyscall | |
| 11 | .type __kernel_vsyscall,@function | |
| 69d0627a | 12 | ALIGN |
| 1da177e4 LT |
13 | __kernel_vsyscall: |
| 14 | .LSTART_vsyscall: | |
| 15 | int $0x80 | |
| 16 | ret | |
| 17 | .LEND_vsyscall: | |
| 18 | .size __kernel_vsyscall,.-.LSTART_vsyscall | |
| 19 | .previous | |
| 20 | ||
| 21 | .section .eh_frame,"a",@progbits | |
| 22 | .LSTARTFRAMEDLSI: | |
| 23 | .long .LENDCIEDLSI-.LSTARTCIEDLSI | |
| 24 | .LSTARTCIEDLSI: | |
| 25 | .long 0 /* CIE ID */ | |
| 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 */ | |
| 34 | .uleb128 4 | |
| 35 | .uleb128 4 | |
| 36 | .byte 0x88 /* DW_CFA_offset, column 0x8 */ | |
| 37 | .uleb128 1 | |
| 38 | .align 4 | |
| 39 | .LENDCIEDLSI: | |
| 40 | .long .LENDFDEDLSI-.LSTARTFDEDLSI /* Length FDE */ | |
| 41 | .LSTARTFDEDLSI: | |
| 42 | .long .LSTARTFDEDLSI-.LSTARTFRAMEDLSI /* CIE pointer */ | |
| 43 | .long .LSTART_vsyscall-. /* PC-relative start address */ | |
| 44 | .long .LEND_vsyscall-.LSTART_vsyscall | |
| 45 | .uleb128 0 | |
| 46 | .align 4 | |
| 47 | .LENDFDEDLSI: | |
| 48 | .previous | |
| 49 | ||
| 69d0627a RM |
50 | /* |
| 51 | * Pad out the segment to match the size of the sysenter.S version. | |
| 52 | */ | |
| cadd5164 | 53 | VDSO32_vsyscall_eh_frame_size = 0x40 |
| 69d0627a RM |
54 | .section .data,"aw",@progbits |
| 55 | .space VDSO32_vsyscall_eh_frame_size-(.LENDFDEDLSI-.LSTARTFRAMEDLSI), 0 | |
| 56 | .previous |