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Print EPC address on NMI (i.e. when "DUMP" button is pressed) for debug.

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This commit is contained in:
tsutsui 2007-06-27 15:48:16 +00:00
parent e31adb2d42
commit 386666a542
1 changed files with 20 additions and 7 deletions
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23
sys/arch/ews4800mips/ews4800mips/locore_machdep.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore_machdep.S,v 1.1 2005/12/29 15:20:08 tsutsui Exp $ */
/* $NetBSD: locore_machdep.S,v 1.2 2007/06/27 15:48:16 tsutsui Exp $ */
/*-
* Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
@ -54,13 +54,26 @@ END(ews4800mips_nmi_vec)
LEAF_NOPROFILE(nmi_exception)
li a0, 0 /* x-pos */
2: li a2, 64 /* '@' */
li k0, 32
1:
mfc0 v0, MIPS_COP_0_EXC_PC /* get EPC */
addu k0, k0, -4
srl v0, v0, k0
andi v1, v0, 0xf
sltiu v0, v1, 10
bnez v0, 2f
nop
addi v1, v1, 'a' - ('9' + 1)
2:
addi a2, v1, '0'
lui v0, 0xbfc0
ori v0, 0xff60
jal v0 /* ROM_PUTC(x, y, c) */
li a1, 0 /* y-pos */
jal v0
nop
b 2b
bne k0, zero, 1b
addiu a0, a0, 12
3:
b 3b
nop
/* NOTREACHED */
END(nmi_exception)