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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>
92 lines
2.0 KiB
ArmAsm
92 lines
2.0 KiB
ArmAsm
/* setjmp for SH4.
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Copyright (C) 1999-2022 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 <jmpbuf-offsets.h>
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ENTRY (__sigsetjmp)
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/* Save registers */
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#ifdef __SH_FPU_ANY__
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add #JB_SIZE, r4
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fmov.s fr15, @-r4
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fmov.s fr14, @-r4
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fmov.s fr13, @-r4
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fmov.s fr12, @-r4
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sts.l fpscr, @-r4
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#else
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add #(JB_SIZE - 4 * 5), r4
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#endif /* __SH_FPU_ANY__ */
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stc.l gbr, @-r4
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#ifdef PTR_MANGLE
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sts pr, r2
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PTR_MANGLE (r2, r1)
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mov.l r2, @-r4
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mov r15, r2
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PTR_MANGLE2 (r2, r1)
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mov.l r2, @-r4
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mov r14, r2
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PTR_MANGLE2 (r2, r1)
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mov.l r2, @-r4
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mov #0, r1
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#else
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sts.l pr, @-r4
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mov.l r15, @-r4
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mov.l r14, @-r4
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#endif
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mov.l r13, @-r4
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mov.l r12, @-r4
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mov.l r11, @-r4
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mov.l r10, @-r4
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mov.l r9, @-r4
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mov.l r8, @-r4
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#if IS_IN (rtld)
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/* In ld.so we never save the signal mask. */
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rts
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mov #0, r0
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#else
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/* Make a tail call to __sigjmp_save; it takes the same args. */
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# ifdef SHARED
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mov.l 1f, r1
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mova 1f, r0
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bra 2f
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add r1, r0
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.align 2
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1:
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.long _GLOBAL_OFFSET_TABLE_
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2:
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mov.l .L1, r1
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mov.l @(r0,r1), r1
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jmp @r1
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nop
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.align 2
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.L1:
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.long C_SYMBOL_NAME(__sigjmp_save@GOT)
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# else
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mov.l .L1, r1
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jmp @r1
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nop
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.align 2
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.L1:
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.long C_SYMBOL_NAME(__sigjmp_save)
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# endif
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#endif
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END (__sigsetjmp)
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hidden_def (__sigsetjmp)
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