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powerpc/traps: Use SRR1 defines for program check reasons 

Currently we open code the reason codes for program checks. Instead use
the existing SRR1 defines.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-08-08 16:39:25 +10:00
parent ccd3cd3613
commit d30a5a5262
2 changed files with 6 additions and 5 deletions
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1
arch/powerpc/include/asm/reg.h
View File

@ -724,6 +724,7 @@
* may not be recoverable */
#define SRR1_WS_DEEPER 0x00020000 /* Some resources not maintained */
#define SRR1_WS_DEEP 0x00010000 /* All resources maintained */
#define SRR1_PROGTM 0x00200000 /* TM Bad Thing */
#define SRR1_PROGFPE 0x00100000 /* Floating Point Enabled */
#define SRR1_PROGILL 0x00080000 /* Illegal instruction */
#define SRR1_PROGPRIV 0x00040000 /* Privileged instruction */

10
arch/powerpc/kernel/traps.c
View File

@ -379,11 +379,11 @@ static inline int check_io_access(struct pt_regs *regs)
/* On non-4xx, the reason for the machine check or program
exception is in the MSR. */
#define get_reason(regs) ((regs)->msr)
#define REASON_TM 0x200000
#define REASON_FP 0x100000
#define REASON_ILLEGAL 0x80000
#define REASON_PRIVILEGED 0x40000
#define REASON_TRAP 0x20000
#define REASON_TM SRR1_PROGTM
#define REASON_FP SRR1_PROGFPE
#define REASON_ILLEGAL SRR1_PROGILL
#define REASON_PRIVILEGED SRR1_PROGPRIV
#define REASON_TRAP SRR1_PROGTRAP
#define single_stepping(regs) ((regs)->msr & MSR_SE)
#define clear_single_step(regs) ((regs)->msr &= ~MSR_SE)