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Add a different version vfp_fpscr_changable if FPU_VFP was not defined.

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If no FPU was found, reinit vfp_fpscr_changeable/default to values appropriate
for softfloat.
This commit is contained in:
matt 2014-03-04 08:32:23 +00:00
parent 6040f5ca22
commit 93bd3693a8
1 changed files with 8 additions and 6 deletions
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14
sys/arch/arm/vfp/vfp_init.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfp_init.c,v 1.34 2014/03/03 08:45:18 matt Exp $ */
/* $NetBSD: vfp_init.c,v 1.35 2014/03/04 08:32:23 matt Exp $ */
/*
* Copyright (c) 2008 ARM Ltd
@ -44,9 +44,6 @@
#include <uvm/uvm_extern.h> /* for pmap.h */
extern int cpu_media_and_vfp_features[];
extern int cpu_neon_present;
#ifdef FPU_VFP
#ifdef CPU_CORTEX
@ -171,6 +168,9 @@ vfp_test(u_int address, u_int insn, trapframe_t *frame, int fault_code)
return 0;
}
#else
/* determine what bits can be changed */
uint32_t vfp_fpscr_changable = VFP_FPSCR_CSUM|VFP_FPSCR_ESUM|VFP_FPSCR_RMODE;
#endif /* FPU_VFP */
struct evcnt vfp_fpscr_ev =
@ -201,8 +201,7 @@ vfp_fpscr_handler(u_int address, u_int insn, trapframe_t *frame, int fault_code)
return 1;
if (__predict_false(!vfp_used_p())) {
pcb->pcb_vfp.vfp_fpscr =
(VFP_FPSCR_DN | VFP_FPSCR_FZ | VFP_FPSCR_RN); /* Runfast */
pcb->pcb_vfp.vfp_fpscr = vfp_fpscr_default;
}
#endif
@ -341,6 +340,9 @@ vfp_attach(void)
aprint_normal_dev(ci->ci_dev, "unrecognized VFP version %x\n",
fpsid);
install_coproc_handler(VFP_COPROC, vfp_fpscr_handler);
vfp_fpscr_changable = VFP_FPSCR_CSUM|VFP_FPSCR_ESUM
|VFP_FPSCR_RMODE;
vfp_fpscr_default = 0;
return;
}