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powerpc/ppc-opcode: Define and use PPC_RAW_TRAP() and PPC_RAW_TW()

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Add and use PPC_RAW_TRAP() instead of opencoding.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/52c7e522e56a38e3ff0363906919445920005a8f.1657205708.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-07-07 16:55:15 +02:00 committed by Michael Ellerman
parent 7b48377e1d
commit d00d762daf
3 changed files with 5 additions and 2 deletions
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2
arch/powerpc/include/asm/ppc-opcode.h
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@ -581,6 +581,8 @@
#define PPC_RAW_BRANCH(offset) (0x48000000 | PPC_LI(offset))
#define PPC_RAW_BL(offset) (0x48000001 | PPC_LI(offset))
#define PPC_RAW_TW(t0, a, b) (0x7f000008 | ___PPC_RS(t0) | ___PPC_RA(a) | ___PPC_RB(b))
#define PPC_RAW_TRAP() PPC_RAW_TW(31, 0, 0)
/* Deal with instructions that older assemblers aren't aware of */
#define PPC_BCCTR_FLUSH stringify_in_c(.long PPC_INST_BCCTR_FLUSH)

3
arch/powerpc/include/asm/probes.h
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@ -9,8 +9,9 @@
*/
#include <linux/types.h>
#include <asm/disassemble.h>
#include <asm/ppc-opcode.h>
#define BREAKPOINT_INSTRUCTION 0x7fe00008 /* trap */
#define BREAKPOINT_INSTRUCTION PPC_RAW_TRAP() /* trap */
/* Trap definitions per ISA */
#define IS_TW(instr) (((instr) & 0xfc0007fe) == 0x7c000008)

2
arch/powerpc/xmon/xmon.c
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@ -116,7 +116,7 @@ struct bpt {
static struct bpt bpts[NBPTS];
static struct bpt dabr[HBP_NUM_MAX];
static struct bpt *iabr;
static unsigned bpinstr = 0x7fe00008; /* trap */
static unsigned int bpinstr = PPC_RAW_TRAP();
#define BP_NUM(bp) ((bp) - bpts + 1)