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sys/arm/linux/linux_locore.s
- This file was added.
| /* $FreeBSD$ */ | |||||
| #include "linux_assym.h" /* system definitions */ | |||||
| #include <machine/asmacros.h> /* miscellaneous asm macros */ | |||||
| #include <arm/linux/linux_syscall.h> /* system call numbers */ | |||||
| #include "assym.s" | |||||
| /* | |||||
| * To avoid excess stack frame the signal trampoline code emulates | |||||
| * the 'call' instruction. | |||||
| */ | |||||
| ASENTRY_NP(linux_sigcode) | |||||
| bl .getip0 | |||||
| .getip0: | |||||
| mov lr, pc | |||||
| add lr, $.startsigcode-.getip0 /* ret address */ | |||||
| ldr r1, [r0], #LINUX_SIGF_HANDLER | |||||
| ldr r1, [r1] | |||||
| bx r1 | |||||
| .startsigcode: | |||||
| mov r7, $LINUX_SYS_linux_sigreturn /* linux_sigreturn() */ | |||||
| swi 0 | |||||
| .endsigcode: | |||||
| 0: b 0b | |||||
| ASEND(linux_sigcode) | |||||
| ASENTRY_NP(linux_rt_sigcode) | |||||
| ldr r1, [r0], #LINUX_RT_SIGF_UC | |||||
| ldr r0, [r1], #LINUX_RT_SIGF_SC | |||||
| bl .getip1 | |||||
| .getip1: | |||||
| mov lr, pc | |||||
| add lr, $.startrtsigcode-.getip1 /* ret address */ | |||||
| ldr r1, [r0], #LINUX_RT_SIGF_HANDLER | |||||
| ldr r1, [r1] | |||||
| bx r1 | |||||
| .startrtsigcode: | |||||
| mov r7, $LINUX_SYS_linux_rt_sigreturn /* linux_rt_sigreturn() */ | |||||
| swi 0 | |||||
| .endrtsigcode: | |||||
| 0: b 0b | |||||
| ASEND(linux_rt_sigcode) | |||||
| ASENTRY_NP(linux_vsyscall) | |||||
| .startvsyscall: | |||||
| mov r7, r0 | |||||
| swi 0 | |||||
| mov pc, lr | |||||
| .endvsyscall: | |||||
| ASEND(linux_vsyscall) | |||||
| #define do_cfa_expr(offset) \ | |||||
| .byte 0x0f; /* DW_CFA_def_cfa_expression */ \ | |||||
| .uleb128 11f-10f; /* length */ \ | |||||
| 10: .byte 0x74; /* DW_OP_breg4 */ \ | |||||
| .sleb128 offset; /* offset */ \ | |||||
| .byte 0x06; /* DW_OP_deref */ \ | |||||
| 11: | |||||
| /* CIE */ | |||||
| .section .eh_frame | |||||
| /*.section .eh_frame,"a",@progbits*/ | |||||
| .LSTARTFRAMEDLSI1: | |||||
| .long .LENDCIEDLSI1-.LSTARTCIEDLSI1 | |||||
| .LSTARTCIEDLSI1: | |||||
| .long 0 /* CIE ID */ | |||||
| .byte 1 /* Version number */ | |||||
| .string "zRS" /* NULL-terminated | |||||
| * augmentation string | |||||
| */ | |||||
| .uleb128 1 /* Code alignment factor */ | |||||
| .sleb128 -4 /* Data alignment factor */ | |||||
| .byte 8 /* Return address | |||||
| * register column | |||||
| */ | |||||
| .uleb128 1 /* Augmentation value length */ | |||||
| .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ | |||||
| .byte 0 /* DW_CFA_nop */ | |||||
| .align 4 | |||||
| .LENDCIEDLSI1: | |||||
| /* FDE */ | |||||
| .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */ | |||||
| .LSTARTFDEDLSI1: | |||||
| .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */ | |||||
| .long .startsigcode-. /* PC-relative start address */ | |||||
| .long .endsigcode-.startsigcode | |||||
| .uleb128 0 /* Augmentation */ | |||||
| do_cfa_expr(LINUX_SIGF_SC-8) | |||||
| .align 4 | |||||
| .LENDFDEDLSI1: | |||||
| .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */ | |||||
| .LSTARTFDEDLSI2: | |||||
| .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */ | |||||
| .long .startrtsigcode-. /* PC-relative start address */ | |||||
| .long .endrtsigcode-.startrtsigcode | |||||
| .uleb128 0 /* Augmentation */ | |||||
| do_cfa_expr(LINUX_RT_SIGF_SC-4+LINUX_SC_ESP) | |||||
| .align 4 | |||||
| .LENDFDEDLSI2: | |||||
| .previous | |||||
| .section .eh_frame | |||||
| /*.section .eh_frame,"a",@progbits*/ | |||||
| .LSTARTFRAMEDLSI2: | |||||
| .long .LENDCIEDLSI2-.LSTARTCIEDLSI2 | |||||
| .LSTARTCIEDLSI2: | |||||
| .long 0 /* CIE ID */ | |||||
| .byte 1 /* Version number */ | |||||
| .string "zR" /* NULL-terminated | |||||
| * augmentation string | |||||
| */ | |||||
| .uleb128 1 /* Code alignment factor */ | |||||
| .sleb128 -4 /* Data alignment factor */ | |||||
| .byte 8 /* Return address register column */ | |||||
| .uleb128 1 /* Augmentation value length */ | |||||
| .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ | |||||
| .byte 0x0c /* DW_CFA_def_cfa */ | |||||
| .uleb128 4 | |||||
| .uleb128 4 | |||||
| .byte 0x88 /* DW_CFA_offset, column 0x8 */ | |||||
| .uleb128 1 | |||||
| .align 4 | |||||
| .LENDCIEDLSI2: | |||||
| .long .LENDFDEDLSI3-.LSTARTFDEDLSI3 /* Length FDE */ | |||||
| .LSTARTFDEDLSI3: | |||||
| .long .LSTARTFDEDLSI3-.LSTARTFRAMEDLSI2 /* CIE pointer */ | |||||
| .long .startvsyscall-. /* PC-relative start address */ | |||||
| .long .endvsyscall-.startvsyscall | |||||
| .uleb128 0 | |||||
| .align 4 | |||||
| .LENDFDEDLSI3: | |||||
| .previous | |||||