Date: Mon, 23 May 2016 05:31:53 +0000 (UTC) From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r300467 - stable/10/sys/amd64/linux Message-ID: <201605230531.u4N5VrSD089052@repo.freebsd.org>
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Author: dchagin Date: Mon May 23 05:31:53 2016 New Revision: 300467 URL: https://svnweb.freebsd.org/changeset/base/300467 Log: MFC r299249: Add a forgotten in r283424 .eh_frame section with CFI & FDE records to allow stack unwinding through signal handler. Modified: stable/10/sys/amd64/linux/linux_locore.s Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/amd64/linux/linux_locore.s ============================================================================== --- stable/10/sys/amd64/linux/linux_locore.s Mon May 23 05:30:24 2016 (r300466) +++ stable/10/sys/amd64/linux/linux_locore.s Mon May 23 05:31:53 2016 (r300467) @@ -29,6 +29,7 @@ NON_GPROF_ENTRY(linux_rt_sigcode) movq $LINUX_SYS_linux_rt_sigreturn,%rax /* linux_rt_sigreturn() */ syscall /* enter kernel with args */ hlt +.endrtsigcode: 0: jmp 0b NON_GPROF_ENTRY(__vdso_clock_gettime) @@ -74,3 +75,34 @@ NON_GPROF_ENTRY(__vdso_getcpu) .balign 4 .previous #endif + + .section .eh_frame,"a",@progbits +.LSTARTFRAMEDLSI0: + .long .LENDCIEDLSI0-.LSTARTCIEDLSI0 +.LSTARTCIEDLSI0: + .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 +.LENDCIEDLSI0: + .long .LENDFDEDLSI0-.LSTARTFDEDLSI0 /* Length FDE */ +.LSTARTFDEDLSI0: + .long .LSTARTFDEDLSI0-.LSTARTFRAMEDLSI0 /* CIE pointer */ + .long .startrtsigcode-. /* PC-relative start address */ + .long .endrtsigcode-.startrtsigcode + .uleb128 0 + .align 4 +.LENDFDEDLSI0: + .previous
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