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Fix FP exception handling that was recently broken and would not 

run src/regress cleanly.  Need to save and restore the frame pointer
for fpemul_sig*().
This commit is contained in:
jeffs 2000-07-18 00:41:18 +00:00
parent 5961b67774
commit 8e5b35a55a
1 changed files with 8 additions and 5 deletions
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13
sys/arch/mips/mips/fp.S
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@ -1,4 +1,4 @@
/* $NetBSD: fp.S,v 1.20 2000/05/31 00:59:27 nisimura Exp $ */
/* $NetBSD: fp.S,v 1.21 2000/07/18 00:41:18 jeffs Exp $ */
/*
* Copyright (c) 1992, 1993
@ -110,6 +110,7 @@
NESTED(MachEmulateFP, CALLFRAME_SIZ, ra)
subu sp, sp, CALLFRAME_SIZ
sw ra, CALLFRAME_RA(sp)
sw a1, CALLFRAME_SIZ + 16(sp)
sw a2, CALLFRAME_SIZ + 8(sp)
/*
* Decode the FMT field (bits 25-21) and FUNCTION field (bits 5-0).
@ -2572,7 +2573,8 @@ fpe_trap:
#nop
sw a2, U_PCB_FPREGS+FRAME_FSR(v0)
#endif
lw a2, CALLFRAME_SIZ + 8(sp)
lw a1, CALLFRAME_SIZ + 16(sp) # frame
lw a2, CALLFRAME_SIZ + 8(sp) # cause
lw ra, CALLFRAME_RA(sp)
addu sp, sp, CALLFRAME_SIZ
j _C_LABEL(fpemul_sigfpe)
@ -2588,7 +2590,8 @@ ill:
#else
ctc1 a2, MIPS_FPU_CSR # save exceptions
#endif
lw a2, CALLFRAME_SIZ + 8(sp)
lw a1, CALLFRAME_SIZ + 16(sp) # frame
lw a2, CALLFRAME_SIZ + 8(sp) # cause
lw ra, CALLFRAME_RA(sp)
addu sp, sp, CALLFRAME_SIZ
j _C_LABEL(fpemul_sigill)
@ -4190,7 +4193,7 @@ END(renorm_ft_d)
* 64bit operation
* trap/syscall/break
*
* Args are same as MachFPInterrupt.
* Args are same as MachEmulateFP.
* It should be used to emulate instruction in branch delay slot.
*/
LEAF(bcemul_delay_slot)
@ -4951,7 +4954,7 @@ END(bcemul_delay_slot)
/*
* Send SIGILL, SIGFPE.
* Args are same as MachFPInterrupt.
* Args are same as MachEmulateFP.
*/
LEAF(fpemul_sigill)
#ifdef SOFTFLOAT