* sysdeps/mips/fpu_control.h: If soft-float, don't use

floating-point registers.
	* sysdeps/mips/__longjmp.c, sysdeps/mips/setjmp_aux.c,
	sysdeps/mips/mips64/__longjmp.c, sysdeps/mips/mips64/setjmp_aux.c:
	Likewise.

ChangeLog.mips

@@ -1,3 +1,11 @@
+2006-09-21  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/mips/fpu_control.h: If soft-float, don't use
+	floating-point registers.
+	* sysdeps/mips/__longjmp.c, sysdeps/mips/setjmp_aux.c,
+	sysdeps/mips/mips64/__longjmp.c, sysdeps/mips/mips64/setjmp_aux.c:
+	Likewise.
+
 2006-08-04  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/unix/sysv/linux/mips/nptl/lowlevellock.h (FUTEX_LOCK_PI,

sysdeps/mips/__longjmp.c

@@ -37,6 +37,7 @@ __longjmp (env, val_arg)
      along the way.  */
   register int val asm ("a1");
 
+#ifdef __mips_hard_float
   /* Pull back the floating point callee-saved registers.  */
   asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0]));
   asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1]));
@@ -48,6 +49,7 @@ __longjmp (env, val_arg)
   /* Get and reconstruct the floating point csr.  */
   asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr));
   asm volatile ("ctc1 $2, $31");
+#endif
 
   /* Get the GP. */
   asm volatile ("lw $gp, %0" : : "m" (env[0].__gp));

sysdeps/mips/fpu_control.h

@@ -58,6 +58,17 @@
 
 #include <features.h>
 
+#ifdef __mips_soft_float
+
+#define _FPU_RESERVED 0xffffffff
+#define _FPU_DEFAULT  0x00000000
+typedef unsigned int fpu_control_t;
+#define _FPU_GETCW(cw) 0
+#define _FPU_SETCW(cw) do { } while (0)
+extern fpu_control_t __fpu_control;
+
+#else /* __mips_soft_float */
+
 /* masking of interrupts */
 #define _FPU_MASK_V     0x0800  /* Invalid operation */
 #define _FPU_MASK_Z     0x0400  /* Division by zero  */
@@ -95,4 +106,6 @@ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
 /* Default control word set at startup.  */
 extern fpu_control_t __fpu_control;
 
+#endif /* __mips_soft_float */
+
 #endif	/* fpu_control.h */

sysdeps/mips/mips64/__longjmp.c

@@ -39,6 +39,7 @@ __longjmp (env, val_arg)
      along the way.  */
   register int val asm ("a1");
 
+#ifdef __mips_hard_float
   /* Pull back the floating point callee-saved registers.  */
 #if _MIPS_SIM == _ABI64
   asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[0]));
@@ -61,6 +62,7 @@ __longjmp (env, val_arg)
   /* Get and reconstruct the floating point csr.  */
   asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr));
   asm volatile ("ctc1 $2, $31");
+#endif
 
   /* Get the GP. */
   asm volatile ("ld $gp, %0" : : "m" (env[0].__gp));

sysdeps/mips/mips64/setjmp_aux.c

@@ -29,6 +29,7 @@ int
 __sigsetjmp_aux (jmp_buf env, int savemask, long long sp, long long fp,
 		 long long gp)
 {
+#ifdef __mips_hard_float
   /* Store the floating point callee-saved registers...  */
 #if _MIPS_SIM == _ABI64
   asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
@@ -46,6 +47,7 @@ __sigsetjmp_aux (jmp_buf env, int savemask, long long sp, long long fp,
   asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
   asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
   asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
+#endif
 #endif
 
   /* .. and the PC;  */
@@ -70,8 +72,10 @@ __sigsetjmp_aux (jmp_buf env, int savemask, long long sp, long long fp,
   asm volatile ("sd $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
   asm volatile ("sd $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
 
+#ifdef __mips_hard_float
   /* .. and finally get and reconstruct the floating point csr.  */
   asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr));
+#endif
 
   /* Save the signal mask if requested.  */
   return __sigjmp_save (env, savemask);

sysdeps/mips/setjmp_aux.c

@@ -27,6 +27,7 @@
 int
 __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
 {
+#ifdef __mips_hard_float
   /* Store the floating point callee-saved registers...  */
   asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
   asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
@@ -34,6 +35,7 @@ __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
   asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
   asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
   asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
+#endif
 
   /* .. and the PC;  */
   asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));
@@ -57,8 +59,10 @@ __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
   asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
   asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
 
+#ifdef __mips_hard_float
   /* .. and finally get and reconstruct the floating point csr.  */
   asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr));
+#endif
 
   /* Save the signal mask if requested.  */
   return __sigjmp_save (env, savemask);