diff options
Diffstat (limited to 'qemu/roms/u-boot/arch/m68k/lib/traps.c')
-rw-r--r-- | qemu/roms/u-boot/arch/m68k/lib/traps.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/m68k/lib/traps.c b/qemu/roms/u-boot/arch/m68k/lib/traps.c new file mode 100644 index 000000000..cbd410ceb --- /dev/null +++ b/qemu/roms/u-boot/arch/m68k/lib/traps.c @@ -0,0 +1,60 @@ +/* + * (C) Copyright 2003 + * Josef Baumgartner <josef.baumgartner@telex.de> + * + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <watchdog.h> +#include <command.h> +#include <asm/processor.h> + + +extern void _exc_handler(void); +extern void _int_handler(void); + +static void show_frame(struct pt_regs *fp) +{ + printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2, + fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8)); + printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp); + printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n", + fp->d0, fp->d1, fp->d2, fp->d3); + printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n", + fp->d4, fp->d5, fp->d6, fp->d7); + printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n", + fp->a0, fp->a1, fp->a2, fp->a3); + printf ("A4: %08lx A5: %08lx A6: %08lx\n", + fp->a4, fp->a5, fp->a6); +} + +void exc_handler(struct pt_regs *fp) { + printf("\n\n*** Unexpected exception ***\n"); + show_frame (fp); + printf("\n*** Please Reset Board! ***\n"); + for(;;); +} + +void trap_init(ulong value) { + unsigned long *vec = (ulong *)value; + int i; + + for(i = 2; i < 25; i++) { + vec[i] = (unsigned long)_exc_handler; + } + for(i = 25; i < 32; i++) { + vec[i] = (unsigned long)_int_handler; + } + for(i = 32; i < 64; i++) { + vec[i] = (unsigned long)_exc_handler; + } + for(i = 64; i < 256; i++) { + vec[i] = (unsigned long)_int_handler; + } + + setvbr(value); /* set vector base register to new table */ +} |