3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Alex Zuepke <azu@sysgo.de>
11 * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
13 * See file CREDITS for list of people who contributed to this
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation; either version 2 of
19 * the License, or (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 #include <asm/proc-armv/ptrace.h>
37 extern void reset_cpu(ulong addr);
40 /* enable IRQ interrupts */
41 void enable_interrupts (void)
44 __asm__ __volatile__("mrs %0, cpsr\n"
54 * disable IRQ/FIQ interrupts
55 * returns true if interrupts had been enabled before we disabled them
57 int disable_interrupts (void)
59 unsigned long old,temp;
60 __asm__ __volatile__("mrs %0, cpsr\n"
63 : "=r" (old), "=r" (temp)
66 return (old & 0x80) == 0;
69 void enable_interrupts (void)
73 int disable_interrupts (void)
82 panic ("Resetting CPU ...\n");
86 void show_regs (struct pt_regs *regs)
89 const char *processor_modes[] = {
90 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
91 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
92 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
93 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
94 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
95 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
96 "UK8_32", "UK9_32", "UK10_32", "UND_32",
97 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
100 flags = condition_codes (regs);
102 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
103 "sp : %08lx ip : %08lx fp : %08lx\n",
104 instruction_pointer (regs),
105 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
106 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
107 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
108 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
109 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
110 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
111 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
112 printf ("Flags: %c%c%c%c",
113 flags & CC_N_BIT ? 'N' : 'n',
114 flags & CC_Z_BIT ? 'Z' : 'z',
115 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
116 printf (" IRQs %s FIQs %s Mode %s%s\n",
117 interrupts_enabled (regs) ? "on" : "off",
118 fast_interrupts_enabled (regs) ? "on" : "off",
119 processor_modes[processor_mode (regs)],
120 thumb_mode (regs) ? " (T)" : "");
123 void do_undefined_instruction (struct pt_regs *pt_regs)
125 printf ("undefined instruction\n");
130 void do_software_interrupt (struct pt_regs *pt_regs)
132 printf ("software interrupt\n");
137 void do_prefetch_abort (struct pt_regs *pt_regs)
139 printf ("prefetch abort\n");
144 void do_data_abort (struct pt_regs *pt_regs)
146 printf ("data abort\n");
151 void do_not_used (struct pt_regs *pt_regs)
153 printf ("not used\n");
158 void do_fiq (struct pt_regs *pt_regs)
160 printf ("fast interrupt request\n");
165 void do_irq (struct pt_regs *pt_regs)
167 printf ("interrupt request\n");