-/* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define __ASSEMBLY__
#include <sysdep.h>
+#include <jmpbuf-offsets.h>
+
+ .ent __sigsetjmp
+ .global __sigsetjmp
+__sigsetjmp:
+ ldgp gp, 0(pv)
-/* The function __sigsetjmp_aux saves all the registers, but it can't
- reliably access the stack or frame pointers, so we pass them in as
- extra arguments. */
-ENTRY (__sigsetjmp)
- ldgp $29, 0($27)
+$sigsetjmp_local:
+#ifndef PIC
+#define FRAME 16
+ subq sp, FRAME, sp
+ .frame sp, FRAME, ra, 0
+ stq ra, 0(sp)
+ .mask 0x04000000, -FRAME
+#else
+#define FRAME 0
+ .frame sp, FRAME, ra, 0
+#endif
+#ifdef PROF
+ .set noat
+ lda AT, _mcount
+ jsr AT, (AT), _mcount
+ .set at
+#endif
.prologue 1
- lda $27, __sigsetjmp_aux /* Load address to jump to. */
- bis $30, $30, $18 /* Pass SP as 3rd arg. */
- bis $15, $15, $19 /* Pass FP as 4th arg. */
- jmp $31, ($27), __sigsetjmp_aux /* Call __sigsetjmp_aux. */
+ stq s0, JB_S0*8(a0)
+ stq s1, JB_S1*8(a0)
+ stq s2, JB_S2*8(a0)
+ stq s3, JB_S3*8(a0)
+ stq s4, JB_S4*8(a0)
+ stq s5, JB_S5*8(a0)
+#ifdef PTR_MANGLE
+ PTR_MANGLE(t1, ra, t0)
+ stq t1, JB_PC*8(a0)
+#else
+ stq ra, JB_PC*8(a0)
+#endif
+#if defined(PTR_MANGLE) && FRAME == 0
+ PTR_MANGLE2(t1, sp, t0)
+#else
+ addq sp, FRAME, t1
+# ifdef PTR_MANGLE
+ PTR_MANGLE2(t1, t1, t0)
+# endif
+#endif
+ stq t1, JB_SP*8(a0)
+#ifdef PTR_MANGLE
+ PTR_MANGLE2(t1, fp, t0)
+ stq t1, JB_FP*8(a0)
+#else
+ stq fp, JB_FP*8(a0)
+#endif
+ stt $f2, JB_F2*8(a0)
+ stt $f3, JB_F3*8(a0)
+ stt $f4, JB_F4*8(a0)
+ stt $f5, JB_F5*8(a0)
+ stt $f6, JB_F6*8(a0)
+ stt $f7, JB_F7*8(a0)
+ stt $f8, JB_F8*8(a0)
+ stt $f9, JB_F9*8(a0)
+
+#ifndef PIC
+ /* Call to C to (potentially) save our signal mask. */
+ jsr ra, __sigjmp_save
+ ldq ra, 0(sp)
+ addq sp, 16, sp
+ ret
+#elif IS_IN (rtld)
+ /* In ld.so we never save the signal mask. */
+ mov 0, v0
+ ret
+#else
+ /* Tailcall to save the signal mask. */
+ br $31, __sigjmp_save !samegp
+#endif
+
+END(__sigsetjmp)
+hidden_def (__sigsetjmp)
+
+/* Put these traditional entry points in the same file so that we can
+ elide much of the nonsense in trying to jmp to the real function. */
+
+ENTRY(_setjmp)
+ ldgp gp, 0(pv)
+ .prologue 1
+ mov 0, a1
+ br $sigsetjmp_local
+END(_setjmp)
+libc_hidden_def (_setjmp)
+
+ENTRY(setjmp)
+ ldgp gp, 0(pv)
+ .prologue 1
+ mov 1, a1
+ br $sigsetjmp_local
+END(setjmp)
- .end __sigsetjmp
+weak_extern(_setjmp)
+weak_extern(setjmp)
projects / thirdparty / glibc.git / blobdiff