1 /* Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005
2 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 The layout of the jmp_buf is as follows. This is subject to change
21 and user-code should never depend on the particular layout of
27 0x000 stack pointer (r12) ; unchangeable (see _JMPBUF_UNWINDS)
44 0x088 ar.bsp ; unchangeable (see __longjmp.S)
46 0x098 &__jmp_buf ; address of the jmpbuf (needed to locate NaT bits in unat)
71 /* The following two entry points are the traditional entry points: */
74 alloc r8=ar.pfs,2,0,0,0
76 br.cond.sptk.many _GI___sigsetjmp
80 alloc r8=ar.pfs,2,0,0,0
82 br.cond.sptk.many _GI___sigsetjmp
84 libc_hidden_def (_setjmp)
86 /* __sigsetjmp(__jmp_buf buf, int savemask) */
89 .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
90 alloc loc1=ar.pfs,2,5,2,0
98 .mem.offset 8,0; st8.spill.nta [r2]=sp,16 // r12 (sp)
99 .mem.offset 0,0; st8.spill.nta [r3]=gp,16 // r1 (gp)
101 st8.nta [r2]=loc2,16 // save caller's unat
102 st8.nta [r3]=r17,16 // save fpsr
105 .mem.offset 8,0; st8.spill.nta [r2]=r4,16 // r4
106 .mem.offset 0,0; st8.spill.nta [r3]=r5,16 // r5
109 stf.spill.nta [r8]=f2,32
110 stf.spill.nta [r9]=f3,32
114 stf.spill.nta [r8]=f4,32
115 stf.spill.nta [r9]=f5,32
118 stf.spill.nta [r8]=f16,32
119 stf.spill.nta [r9]=f17,32
122 stf.spill.nta [r8]=f18,32
123 stf.spill.nta [r9]=f19,32
126 stf.spill.nta [r8]=f20,32
127 stf.spill.nta [r9]=f21,32
130 stf.spill.nta [r8]=f22,32
131 stf.spill.nta [r9]=f23,32
134 stf.spill.nta [r8]=f24,32
135 stf.spill.nta [r9]=f25,32
138 stf.spill.nta [r8]=f26,32
139 stf.spill.nta [r9]=f27,32
142 stf.spill.nta [r8]=f28,32
143 stf.spill.nta [r9]=f29,32
147 PTR_MANGLE (loc3, loc4)
151 stf.spill.nta [r8]=f30
152 stf.spill.nta [r9]=f31
154 .mem.offset 8,0; st8.spill.nta [r2]=r6,16 // r6
155 .mem.offset 0,0; st8.spill.nta [r3]=r7,16 // r7
162 st8.nta [r2]=loc3,16 // b0
164 st8.nta [r2]=loc0,16 // b0
166 st8.nta [r3]=r17,16 // b1
169 st8.nta [r2]=r18,16 // b2
170 st8.nta [r3]=r19,16 // b3
172 st8.nta [r2]=r20,16 // b4
173 st8.nta [r3]=r21,16 // b5
175 st8.nta [r2]=loc1,16 // ar.pfs
176 st8.nta [r3]=r22,16 // ar.lc
178 st8.nta [r2]=r24,16 // pr
179 st8.nta [r3]=r23,16 // ar.bsp
181 st8.nta [r2]=r25 // ar.unat
182 st8.nta [r3]=in0 // &__jmp_buf
183 #if defined NOT_IN_libc && defined IS_IN_rtld
184 /* In ld.so we never save the signal mask. */
187 br.call.dpnt.few rp=__sigjmp_save
189 .ret0: // force a new bundle ::q
190 mov.m ar.unat=loc2 // restore caller's unat
196 strong_alias(__sigsetjmp, _GI___sigsetjmp)