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ARM: hw_breakpoint: unify single-stepping code for watchpoints and breakpoints

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The single-stepping code is currently different depending on whether
we are stepping over a breakpoint or a watchpoint. There is no good
reason for this, so let's sort it out.

This patch adds functions for enabling/disabling single-step for
a particular hw_breakpoint and integrates this with the exception
handling code.

Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon
2010-12-01 14:12:13 +00:00
parent 93a04a3416
commit 9ebb3cbcc3
2 changed files with 42 additions and 43 deletions
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4
arch/arm/include/asm/hw_breakpoint.h
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@@ -20,8 +20,8 @@ struct arch_hw_breakpoint_ctrl {
struct arch_hw_breakpoint {
u32 address;
u32 trigger;
struct arch_hw_breakpoint_ctrl step_ctrl;
struct arch_hw_breakpoint_ctrl ctrl;
struct arch_hw_breakpoint_ctrl step_ctrl;
struct arch_hw_breakpoint_ctrl ctrl;
};
static inline u32 encode_ctrl_reg(struct arch_hw_breakpoint_ctrl ctrl)