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(__longjmp): Restore SP and FP last and

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in a single asm as they may be used to access other stored
registers.
This commit is contained in:
Andreas Jaeger 2000-11-27 14:40:15 +00:00
parent 0abafb2042
commit a9a575e676
2 changed files with 15 additions and 14 deletions
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12
sysdeps/mips/__longjmp.c
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@ -45,16 +45,10 @@ __longjmp (env, val_arg)
asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4]));
asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5])); asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5]));
/* Restore the stack pointer. */
asm volatile ("lw $29, %0" : : "m" (env[0].__sp));
/* Get and reconstruct the floating point csr. */ /* Get and reconstruct the floating point csr. */
asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr));
asm volatile ("ctc1 $2, $31"); asm volatile ("ctc1 $2, $31");
/* Get the FP. */
asm volatile ("lw $30, %0" : : "m" (env[0].__fp));
/* Get the GP. */ /* Get the GP. */
asm volatile ("lw $gp, %0" : : "m" (env[0].__gp)); asm volatile ("lw $gp, %0" : : "m" (env[0].__gp));
@ -71,6 +65,12 @@ __longjmp (env, val_arg)
/* Get the PC. */ /* Get the PC. */
asm volatile ("lw $25, %0" : : "m" (env[0].__pc)); asm volatile ("lw $25, %0" : : "m" (env[0].__pc));
/* Restore the stack pointer and the FP. They have to be restored
last and in a single asm as gcc, depending on options used, may
use either of them to access env. */
asm volatile ("lw $29, %0\n\t"
"lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp));
/* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */
if (val == 0) if (val == 0)
asm volatile ("li $2, 1"); asm volatile ("li $2, 1");

13
sysdeps/mips/mips64/__longjmp.c
View File

@ -47,16 +47,10 @@ __longjmp (env, val_arg)
asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[6])); asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[6]));
asm volatile ("l.d $f31, %0" : : "m" (env[0].__fpregs[7])); asm volatile ("l.d $f31, %0" : : "m" (env[0].__fpregs[7]));
/* Restore the stack pointer. */
asm volatile ("ld $29, %0" : : "m" (env[0].__sp));
/* Get and reconstruct the floating point csr. */ /* Get and reconstruct the floating point csr. */
asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr));
asm volatile ("ctc1 $2, $31"); asm volatile ("ctc1 $2, $31");
/* Get the FP. */
asm volatile ("ld $30, %0" : : "m" (env[0].__fp));
/* Get the GP. */ /* Get the GP. */
asm volatile ("ld $gp, %0" : : "m" (env[0].__gp)); asm volatile ("ld $gp, %0" : : "m" (env[0].__gp));
@ -73,6 +67,13 @@ __longjmp (env, val_arg)
/* Get the PC. */ /* Get the PC. */
asm volatile ("ld $31, %0" : : "m" (env[0].__pc)); asm volatile ("ld $31, %0" : : "m" (env[0].__pc));
/* Restore the stack pointer and the FP. They have to be restored
last and in a single asm as gcc, depending on options used, may
use either of them to access env. */
asm volatile ("ld $29, %0\n\t"
"ld $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp));
/* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */
if (val == 0) if (val == 0)
asm volatile ("dli $2, 1"); asm volatile ("dli $2, 1");