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88f4b6929c
This allows us to define a generic no-op version of PTR_MANGLE and PTR_DEMANGLE. In the future, we can use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources, avoiding an unintended loss of hardening due to missing include files or unlucky header inclusion ordering. In i386 and x86_64, we can avoid a <tls.h> dependency in the C code by using the computed constant from <tcb-offsets.h>. <sysdep.h> no longer includes these definitions, so there is no cyclic dependency anymore when computing the <tcb-offsets.h> constants. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
65 lines
1.6 KiB
ArmAsm
65 lines
1.6 KiB
ArmAsm
/* Copyright (C) 1992-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#define __ASSEMBLY__
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#include <sysdep.h>
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#include <pointer_guard.h>
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#include <jmpbuf-offsets.h>
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ENTRY(__longjmp)
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#ifdef PROF
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ldgp gp, 0(pv)
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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.prologue 1
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#else
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.prologue 0
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#endif
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mov a1, v0
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ldq s0, JB_S0*8(a0)
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ldq s1, JB_S1*8(a0)
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ldq s2, JB_S2*8(a0)
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ldq s3, JB_S3*8(a0)
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ldq s4, JB_S4*8(a0)
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ldq s5, JB_S5*8(a0)
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ldq ra, JB_PC*8(a0)
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ldq fp, JB_FP*8(a0)
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ldq t0, JB_SP*8(a0)
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ldt $f2, JB_F2*8(a0)
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ldt $f3, JB_F3*8(a0)
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ldt $f4, JB_F4*8(a0)
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ldt $f5, JB_F5*8(a0)
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ldt $f6, JB_F6*8(a0)
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ldt $f7, JB_F7*8(a0)
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ldt $f8, JB_F8*8(a0)
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ldt $f9, JB_F9*8(a0)
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE(ra, t1)
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PTR_DEMANGLE2(t0, t1)
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PTR_DEMANGLE2(fp, t1)
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#endif
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cmoveq v0, 1, v0
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mov t0, sp
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ret
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END(__longjmp)
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