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parisc: Implement kprobes

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Implement kprobes support for PA-RISC.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Sven Schnelle
2019-04-07 20:10:58 +02:00
committed by Helge Deller
parent ea1afe339a
commit 8858ac8e9e
5 changed files with 254 additions and 0 deletions
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14
arch/parisc/kernel/traps.c
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@@ -43,6 +43,7 @@
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include <linux/kgdb.h>
#include <linux/kprobes.h>
#include "../math-emu/math-emu.h" /* for handle_fpe() */
@@ -294,6 +295,14 @@ static void handle_break(struct pt_regs *regs)
(tt == BUG_TRAP_TYPE_NONE) ? 9 : 0);
}
#ifdef CONFIG_KPROBES
if (unlikely(iir == PARISC_KPROBES_BREAK_INSN)) {
parisc_kprobe_break_handler(regs);
return;
}
#endif
#ifdef CONFIG_KGDB
if (unlikely(iir == PARISC_KGDB_COMPILED_BREAK_INSN ||
iir == PARISC_KGDB_BREAK_INSN)) {
@@ -528,6 +537,11 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
/* Recovery counter trap */
regs->gr[0] &= ~PSW_R;
#ifdef CONFIG_KPROBES
if (parisc_kprobe_ss_handler(regs))
return;
#endif
#ifdef CONFIG_KGDB
if (kgdb_single_step) {
kgdb_handle_exception(0, SIGTRAP, 0, regs);