CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: skrll Date: Sat Oct 24 07:02:20 UTC 2020 Modified Files: src/lib/libc/arch/aarch64/sys: __sigtramp2.S Log Message: Update the unwinder comment to better reflect ARM64 To generate a diff of this commit: cvs rdiff -u -r1.5 -r1.6 src/lib/libc/arch/aarch64/sys/__sigtramp2.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/__sigtramp2.S diff -u src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.5 src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.6 --- src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.5 Sat Oct 24 07:00:26 2020 +++ src/lib/libc/arch/aarch64/sys/__sigtramp2.S Sat Oct 24 07:02:20 2020 @@ -1,4 +1,4 @@ -/* $NetBSD: __sigtramp2.S,v 1.5 2020/10/24 07:00:26 skrll Exp $ */ +/* $NetBSD: __sigtramp2.S,v 1.6 2020/10/24 07:02:20 skrll Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -41,12 +41,13 @@ * ucontext structure * sp-> siginfo structure * and x28 points to the ucontext - * - * The unwind entry includes the one byte prior to the trampoline + */ + +/* + * The unwind entry includes the one instruction prior to the trampoline * because the unwinder will look up (return PC - 1) while unwinding. - * Normally (return PC - 1) computes an address inside the call - * instruction that created the child frame, but here there is no call - * instruction so we have to manually add padding. + * Normally this would be the jump / branch, but since there isn't one in + * this case, we place an explicit nop there instead. */ .cfi_startproc simple .cfi_signal_frame
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: skrll Date: Sat Oct 24 07:00:26 UTC 2020 Modified Files: src/lib/libc/arch/aarch64/sys: __sigtramp2.S Log Message: s/ARM/ARM64/ in comment To generate a diff of this commit: cvs rdiff -u -r1.4 -r1.5 src/lib/libc/arch/aarch64/sys/__sigtramp2.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/__sigtramp2.S diff -u src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.4 src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.5 --- src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.4 Mon Oct 19 22:33:53 2020 +++ src/lib/libc/arch/aarch64/sys/__sigtramp2.S Sat Oct 24 07:00:26 2020 @@ -1,4 +1,4 @@ -/* $NetBSD: __sigtramp2.S,v 1.4 2020/10/19 22:33:53 kamil Exp $ */ +/* $NetBSD: __sigtramp2.S,v 1.5 2020/10/24 07:00:26 skrll Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -33,7 +33,7 @@ #include "assym.h" /* - * The ARM signal trampoline is invoked only to return from + * The ARM64 signal trampoline is invoked only to return from * the signal; the kernel calls the signal handler directly. * * On entry, the stack looks like:
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: kamil Date: Mon Oct 19 22:33:53 UTC 2020 Modified Files: src/lib/libc/arch/aarch64/sys: __sigtramp2.S Log Message: Restore SP from mcontext Improves unwinding of multiple frames without frame pointer. To generate a diff of this commit: cvs rdiff -u -r1.3 -r1.4 src/lib/libc/arch/aarch64/sys/__sigtramp2.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/__sigtramp2.S diff -u src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.3 src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.4 --- src/lib/libc/arch/aarch64/sys/__sigtramp2.S:1.3 Sat Oct 17 15:44:59 2020 +++ src/lib/libc/arch/aarch64/sys/__sigtramp2.S Mon Oct 19 22:33:53 2020 @@ -1,4 +1,4 @@ -/* $NetBSD: __sigtramp2.S,v 1.3 2020/10/17 15:44:59 skrll Exp $ */ +/* $NetBSD: __sigtramp2.S,v 1.4 2020/10/19 22:33:53 kamil Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -82,7 +82,7 @@ .cfi_offset x28, _UC_REGS_X28 .cfi_offset x29, _UC_REGS_X29 .cfi_offset lr, _UC_REGS_LR - /* The unwinder will use the CFA to restore X31 (SP). */ + .cfi_offset sp, _UC_REGS_SP nop ENTRY_NP(__sigtramp_siginfo_2) mov x0, x28/* set the arg */
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: mrg Date: Tue Feb 5 13:02:36 UTC 2019 Modified Files: src/lib/libc/arch/aarch64/sys: brk.S Log Message: use adrp not adr, since the data is not pc-rel. fixes brk(2). To generate a diff of this commit: cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/aarch64/sys/brk.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/brk.S diff -u src/lib/libc/arch/aarch64/sys/brk.S:1.1 src/lib/libc/arch/aarch64/sys/brk.S:1.2 --- src/lib/libc/arch/aarch64/sys/brk.S:1.1 Sun Aug 10 05:47:37 2014 +++ src/lib/libc/arch/aarch64/sys/brk.S Tue Feb 5 13:02:35 2019 @@ -1,4 +1,4 @@ -/* $NetBSD: brk.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ +/* $NetBSD: brk.S,v 1.2 2019/02/05 13:02:35 mrg Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -49,7 +49,7 @@ _C_LABEL(__minbrk): * Change the data segment size */ ENTRY(_brk) - adr x9, _C_LABEL(__minbrk) + adrp x9, _C_LABEL(__minbrk) ldr x10, [x9, #:lo12:_C_LABEL(__minbrk)] /* @@ -63,7 +63,7 @@ ENTRY(_brk) _INVOKE_CERROR() /* Store the new address in curbrk */ - adr x9, _C_LABEL(__curbrk) + adrp x9, _C_LABEL(__curbrk) str x11, [x9, #:lo12:_C_LABEL(__curbrk)] /* Return 0 for success */
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: ryo Date: Thu Nov 22 08:30:58 UTC 2018 Modified Files: src/lib/libc/arch/aarch64/sys: __clone.S Log Message: fix condition code. x1==0 is parent. To generate a diff of this commit: cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/aarch64/sys/__clone.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/__clone.S diff -u src/lib/libc/arch/aarch64/sys/__clone.S:1.1 src/lib/libc/arch/aarch64/sys/__clone.S:1.2 --- src/lib/libc/arch/aarch64/sys/__clone.S:1.1 Sun Aug 10 05:47:37 2014 +++ src/lib/libc/arch/aarch64/sys/__clone.S Thu Nov 22 08:30:58 2018 @@ -1,4 +1,4 @@ -/* $NetBSD: __clone.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ +/* $NetBSD: __clone.S,v 1.2 2018/11/22 08:30:58 ryo Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -58,7 +58,7 @@ ENTRY(__clone) * x0 == pid of child in parent, x0 == pid of parent in child. */ /* if this is the parent then just return the pid */ - cbnz x1, 1f + cbz x1, 1f /* * This is the child
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: ryo Date: Fri Jul 20 12:19:07 UTC 2018 Modified Files: src/lib/libc/arch/aarch64/sys: ptrace.S Log Message: fix a bug. no need postincrement here. To generate a diff of this commit: cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/aarch64/sys/ptrace.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/ptrace.S diff -u src/lib/libc/arch/aarch64/sys/ptrace.S:1.1 src/lib/libc/arch/aarch64/sys/ptrace.S:1.2 --- src/lib/libc/arch/aarch64/sys/ptrace.S:1.1 Sun Aug 10 05:47:37 2014 +++ src/lib/libc/arch/aarch64/sys/ptrace.S Fri Jul 20 12:19:07 2018 @@ -1,4 +1,4 @@ -/* $NetBSD: ptrace.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ +/* $NetBSD: ptrace.S,v 1.2 2018/07/20 12:19:07 ryo Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -33,7 +33,7 @@ ENTRY(ptrace) sub sp, sp, #48 - stp x29, x30, [sp, #32]! + stp x29, x30, [sp, #32] add x29, sp, #32 stp x0, x1, [sp, #0] stp x2, x3, [sp, #16]
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: skrll Date: Sun Feb 4 18:32:31 UTC 2018 Modified Files: src/lib/libc/arch/aarch64/sys: pipe.S Log Message: lower case 'ret' to avoid macro clash To generate a diff of this commit: cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/aarch64/sys/pipe.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/pipe.S diff -u src/lib/libc/arch/aarch64/sys/pipe.S:1.1 src/lib/libc/arch/aarch64/sys/pipe.S:1.2 --- src/lib/libc/arch/aarch64/sys/pipe.S:1.1 Sun Aug 10 05:47:37 2014 +++ src/lib/libc/arch/aarch64/sys/pipe.S Sun Feb 4 18:32:31 2018 @@ -1,4 +1,4 @@ -/* $NetBSD: pipe.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ +/* $NetBSD: pipe.S,v 1.2 2018/02/04 18:32:31 skrll Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -39,5 +39,5 @@ ENTRY(_pipe) _INVOKE_CERROR() stp w0, w1, [x9] mov w0, wzr - RET + ret END(_pipe)
CVS commit: src/lib/libc/arch/aarch64/sys
Module Name:src Committed By: ryo Date: Thu Oct 12 05:51:51 UTC 2017 Modified Files: src/lib/libc/arch/aarch64/sys: cerror.S Log Message: return 0x (= -1). not 0x. To generate a diff of this commit: cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/aarch64/sys/cerror.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. Modified files: Index: src/lib/libc/arch/aarch64/sys/cerror.S diff -u src/lib/libc/arch/aarch64/sys/cerror.S:1.1 src/lib/libc/arch/aarch64/sys/cerror.S:1.2 --- src/lib/libc/arch/aarch64/sys/cerror.S:1.1 Sun Aug 10 05:47:37 2014 +++ src/lib/libc/arch/aarch64/sys/cerror.S Thu Oct 12 05:51:51 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: cerror.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ +/* $NetBSD: cerror.S,v 1.2 2017/10/12 05:51:51 ryo Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. @@ -41,7 +41,7 @@ ENTRY_NP(__cerror) bl _C_LABEL(__errno) str w19, [x0] ldp x19, x30, [sp], #16 - mvn w0,wzr + mvn x0, xzr ret .cfi_endproc END(__cerror)
