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Rewrite in terms of an array.

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This commit is contained in:
Ulrich Drepper 1997-09-11 03:15:02 +00:00
parent aaf05db579
commit 06fa7473dc
1 changed files with 53 additions and 26 deletions
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79
sysdeps/alpha/bits/setjmp.h
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@ -17,30 +17,57 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
typedef struct
{
/* Integer registers:
$0 is the return value;
$1-$8, $22-$25, $28 are call-used;
$9-$14 we save here;
$15 is the FP and we save it here;
$16-$21 are input arguments (call-used);
$26 is the return PC and we save it here;
$27 is the procedure value (i.e., the address of __setjmp);
$29 is the global pointer, which the caller will reconstruct
from the return address restored in $26;
$30 is the stack pointer and we save it here;
$31 is always zero. */
long int __9, __10, __11, __12, __13, __14;
long int *__pc, *__fp, *__sp;
/* 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. */
#if 1 /* XXX need predefine for TARGET_FPREGS */
/* 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. */
double __f2, __f3, __f4, __f5, __f6, __f7, __f8, __f9;
#endif /* Have FP regs. */
} __jmp_buf[1];
/*
* 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.
*/
#if defined(__USE_MISC) || defined(__ASSEMBLY__)
#define JB_S0 0
#define JB_S1 1
#define JB_S2 2
#define JB_S3 3
#define JB_S4 4
#define JB_S5 5
#define JB_PC 6
#define JB_FP 7
#define JB_SP 8
#define JB_F2 9
#define JB_F3 10
#define JB_F4 11
#define JB_F5 12
#define JB_F6 13
#define JB_F7 14
#define JB_F8 15
#define JB_F9 16
#endif
#ifndef __ASSEMBLY__
typedef long int __jmp_buf[17];
#endif