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MIPS: Add HARDWARE_WATCHPOINTS definitions and support code.

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This is the main support code for the patch.  Here we just add the
code, the following patches hook it up.

Signed-off-by: David Daney <ddaney@avtrex.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/include/asm/watch.h
 create mode 100644 arch/mips/kernel/watch.c
This commit is contained in:
David Daney
2008-09-23 00:05:54 -07:00
committed by Ralf Baechle
parent 8192c9ea9a
commit 6aa3524c18
6 changed files with 249 additions and 1 deletions
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6
arch/mips/include/asm/cpu-info.h
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@@ -12,6 +12,8 @@
#ifndef __ASM_CPU_INFO_H
#define __ASM_CPU_INFO_H
#include <linux/types.h>
#include <asm/cache.h>
/*
@@ -69,6 +71,10 @@ struct cpuinfo_mips {
int tc_id; /* Thread Context number */
#endif
void *data; /* Additional data */
unsigned int watch_reg_count; /* Number that exist */
unsigned int watch_reg_use_cnt; /* Usable by ptrace */
#define NUM_WATCH_REGS 4
u16 watch_reg_masks[NUM_WATCH_REGS];
} __attribute__((aligned(SMP_CACHE_BYTES)));
extern struct cpuinfo_mips cpu_data[];