diff options
author | Waldemar Brodkorb <wbx@openadk.org> | 2015-10-08 20:28:39 +0200 |
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committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2015-10-09 05:34:32 +0200 |
commit | 4d8e5484afb4978f672a8568ddd12e628fb02724 (patch) | |
tree | 58be2b52d5afb90974cee8303c6966fb0298f7a0 /libc/sysdeps/linux/or1k/__longjmp.S | |
parent | e78a0f58f23347c822c182d1c01f6eb9b9866d60 (diff) |
add new architecture support for or1k
Information about Openrisc:
http://opencores.org/or1k/Main_Page
Integrated from:
https://github.com/openrisc/uClibc-or1k
Diffstat (limited to 'libc/sysdeps/linux/or1k/__longjmp.S')
-rw-r--r-- | libc/sysdeps/linux/or1k/__longjmp.S | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/or1k/__longjmp.S b/libc/sysdeps/linux/or1k/__longjmp.S new file mode 100644 index 000000000..1eb5bb403 --- /dev/null +++ b/libc/sysdeps/linux/or1k/__longjmp.S @@ -0,0 +1,81 @@ +/* longjmp for or1k + + Based on: + longjmp for PowerPC. + Copyright (C) 1995, 1996, 1997, 1999, 2000 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 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <jmpbuf-offsets.h> + +#ifdef __UCLIBC_HAS_FLOATS__ +#define FP(x...) x +#else +#define FP(x...) +#endif + +.globl __longjmp; +.type __longjmp,@function; +.align 2; + +__longjmp: +# l.lwz r11,(JB_SR*4)(r3) +# l.mtspr r0,r11,SPR_SR + l.lwz r1,((JB_GPRS+0)*4)(r3) + l.lwz r2,((JB_GPRS+1)*4)(r3) + /* pass through "value" to r11, then restore r4, for what it's worth" */ +#if 1 + /* if r4 is 0, something wrong, so set it to 1 */ + l.sfeqi r4, 0x0 + l.bnf 1f /* r4 != 0, longjmp value sensible */ + l.nop + l.ori r4, r0, 0x1 /* make nonzero */ +1: +#endif + l.addi r11, r4, 0 + l.lwz r4,((JB_GPRS+3)*4)(r3) + l.lwz r5,((JB_GPRS+4)*4)(r3) + l.lwz r6,((JB_GPRS+5)*4)(r3) + l.lwz r7,((JB_GPRS+6)*4)(r3) + l.lwz r8,((JB_GPRS+7)*4)(r3) + l.lwz r9,((JB_GPRS+8)*4)(r3) + l.lwz r10,((JB_GPRS+9)*4)(r3) + l.lwz r12,((JB_GPRS+11)*4)(r3) + l.lwz r13,((JB_GPRS+12)*4)(r3) + l.lwz r14,((JB_GPRS+13)*4)(r3) + l.lwz r15,((JB_GPRS+14)*4)(r3) + l.lwz r16,((JB_GPRS+15)*4)(r3) + l.lwz r17,((JB_GPRS+16)*4)(r3) + l.lwz r18,((JB_GPRS+17)*4)(r3) + l.lwz r19,((JB_GPRS+18)*4)(r3) + l.lwz r20,((JB_GPRS+19)*4)(r3) + l.lwz r21,((JB_GPRS+20)*4)(r3) + l.lwz r22,((JB_GPRS+21)*4)(r3) + l.lwz r23,((JB_GPRS+22)*4)(r3) + l.lwz r24,((JB_GPRS+23)*4)(r3) + l.lwz r25,((JB_GPRS+24)*4)(r3) + l.lwz r26,((JB_GPRS+25)*4)(r3) + l.lwz r27,((JB_GPRS+26)*4)(r3) + l.lwz r28,((JB_GPRS+27)*4)(r3) + l.lwz r29,((JB_GPRS+28)*4)(r3) + l.lwz r30,((JB_GPRS+29)*4)(r3) + l.lwz r31,((JB_GPRS+30)*4)(r3) + l.jr r9 + l.nop +.size __longjmp,.-__longjmp + +libc_hidden_def(__longjmp) |