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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>
61 lines
1.7 KiB
ArmAsm
61 lines
1.7 KiB
ArmAsm
/* longjmp.
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Copyright (C) 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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#include <sysdep.h>
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#include <pointer_guard.h>
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#include <sys/asm.h>
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ENTRY (__longjmp)
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#ifdef PTR_MANGLE
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REG_L t0, a0, 0*SZREG
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PTR_DEMANGLE (ra, t0, t1)
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REG_L t0, a0, 1*SZREG
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PTR_DEMANGLE2 (sp, t0, t1)
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#else
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REG_L ra, a0, 0*SZREG
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REG_L sp, a0, 1*SZREG
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#endif
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REG_L x, a0, 2*SZREG
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REG_L fp, a0, 3*SZREG
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REG_L s0, a0, 4*SZREG
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REG_L s1, a0, 5*SZREG
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REG_L s2, a0, 6*SZREG
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REG_L s3, a0, 7*SZREG
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REG_L s4, a0, 8*SZREG
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REG_L s5, a0, 9*SZREG
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REG_L s6, a0, 10*SZREG
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REG_L s7, a0, 11*SZREG
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REG_L s8, a0, 12*SZREG
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#ifndef __loongarch_soft_float
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FREG_L $f24, a0, 13*SZREG + 0*SZFREG
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FREG_L $f25, a0, 13*SZREG + 1*SZFREG
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FREG_L $f26, a0, 13*SZREG + 2*SZFREG
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FREG_L $f27, a0, 13*SZREG + 3*SZFREG
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FREG_L $f28, a0, 13*SZREG + 4*SZFREG
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FREG_L $f29, a0, 13*SZREG + 5*SZFREG
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FREG_L $f30, a0, 13*SZREG + 6*SZFREG
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FREG_L $f31, a0, 13*SZREG + 7*SZFREG
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#endif
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sltui a0,a1,1
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ADD a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1
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jirl zero,ra,0
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END (__longjmp)
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