54 lines
1.3 KiB
ArmAsm
54 lines
1.3 KiB
ArmAsm
/*
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* Code for the vsyscall page. This version uses the old int $0x80 method.
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*
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* NOTE:
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* 1) __kernel_vsyscall _must_ be first in this page.
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* 2) there are alignment constraints on this stub, see vsyscall-sigreturn.S
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* for details.
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*/
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.text
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.globl __kernel_vsyscall
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.type __kernel_vsyscall,@function
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__kernel_vsyscall:
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.LSTART_vsyscall:
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int $0x80
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ret
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.LEND_vsyscall:
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.size __kernel_vsyscall,.-.LSTART_vsyscall
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.previous
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.section .eh_frame,"a",@progbits
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.LSTARTFRAMEDLSI:
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.long .LENDCIEDLSI-.LSTARTCIEDLSI
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.LSTARTCIEDLSI:
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.long 0 /* CIE ID */
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.byte 1 /* Version number */
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.string "zR" /* NUL-terminated augmentation string */
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.uleb128 1 /* Code alignment factor */
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.sleb128 -4 /* Data alignment factor */
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.byte 8 /* Return address register column */
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.uleb128 1 /* Augmentation value length */
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.byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
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.byte 0x0c /* DW_CFA_def_cfa */
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.uleb128 4
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.uleb128 4
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.byte 0x88 /* DW_CFA_offset, column 0x8 */
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.uleb128 1
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.align 4
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.LENDCIEDLSI:
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.long .LENDFDEDLSI-.LSTARTFDEDLSI /* Length FDE */
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.LSTARTFDEDLSI:
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.long .LSTARTFDEDLSI-.LSTARTFRAMEDLSI /* CIE pointer */
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.long .LSTART_vsyscall-. /* PC-relative start address */
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.long .LEND_vsyscall-.LSTART_vsyscall
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.uleb128 0
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.align 4
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.LENDFDEDLSI:
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.previous
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/*
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* Get the common code for the sigreturn entry points.
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*/
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#include "sigreturn.S"
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