| /* Define the machine-dependent type `jmp_buf'. Alpha version. |
| Copyright (C) 1992-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _BITS_SETJMP_H |
| #define _BITS_SETJMP_H 1 |
| |
| #if !defined _SETJMP_H && !defined _PTHREAD_H |
| # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." |
| #endif |
| |
| /* The previous bits/setjmp.h had __jmp_buf defined as a structure. |
| We use an array of 'long int' instead, to make writing the |
| assembler easier. Naturally, user code should not depend on |
| either representation. */ |
| |
| /* |
| * Integer registers: |
| * $0 is the return value (va); |
| * $1-$8, $22-$25, $28 are call-used (t0-t7, t8-t11, at); |
| * $9-$14 we save here (s0-s5); |
| * $15 is the FP and we save it here (fp or s6); |
| * $16-$21 are input arguments (call-used) (a0-a5); |
| * $26 is the return PC and we save it here (ra); |
| * $27 is the procedure value (i.e., the address of __setjmp) (pv or t12); |
| * $29 is the global pointer, which the caller will reconstruct |
| * from the return address restored in $26 (gp); |
| * $30 is the stack pointer and we save it here (sp); |
| * $31 is always zero (zero). |
| * |
| * Floating-point registers: |
| * $f0 is the floating return value; |
| * $f1, $f10-$f15, $f22-$f30 are call-used; |
| * $f2-$f9 we save here; |
| * $f16-$21 are input args (call-used); |
| * $f31 is always zero. |
| * |
| * Note that even on Alpha hardware that does not have an FPU (there |
| * isn't such a thing currently) it is required to implement the FP |
| * registers. |
| */ |
| |
| #ifndef __ASSEMBLY__ |
| typedef long int __jmp_buf[17]; |
| #endif |
| |
| #endif /* bits/setjmp.h */ |
