[PATCH v4 4/9] powerpc/xmon: Add patch_instruction() support for xmon
From: Balbir Singh <bsingharora@gmail.com>
Date: 2017-06-27 07:49:29
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Move from mwrite() to patch_instruction() for xmon for breakpoint addition and removal. Signed-off-by: Balbir Singh <bsingharora@gmail.com> --- arch/powerpc/xmon/xmon.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index a728e19..08e367e 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c@@ -53,6 +53,7 @@ #include <asm/xive.h> #include <asm/opal.h> #include <asm/firmware.h> +#include <asm/code-patching.h> #ifdef CONFIG_PPC64 #include <asm/hvcall.h>
@@ -837,7 +838,8 @@ static void insert_bpts(void) store_inst(&bp->instr[0]); if (bp->enabled & BP_CIABR) continue; - if (mwrite(bp->address, &bpinstr, 4) != 4) { + if (patch_instruction((unsigned int *)bp->address, + bpinstr) != 0) { printf("Couldn't write instruction at %lx, " "disabling breakpoint there\n", bp->address); bp->enabled &= ~BP_TRAP;
@@ -874,7 +876,8 @@ static void remove_bpts(void) continue; if (mread(bp->address, &instr, 4) == 4 && instr == bpinstr - && mwrite(bp->address, &bp->instr, 4) != 4) + && patch_instruction( + (unsigned int *)bp->address, bp->instr[0]) != 0) printf("Couldn't remove breakpoint at %lx\n", bp->address); else
--
2.9.4