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ARC: Make pt_regs regs unsigned

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KGDB fails to build after f51e2f1911 ("ARC: make sure instruction_pointer()
returns unsigned value")

The hack to force one specific reg to unsigned backfired. There's no
reason to keep the regs signed after all.

|  CC      arch/arc/kernel/kgdb.o
|../arch/arc/kernel/kgdb.c: In function 'kgdb_trap':
| ../arch/arc/kernel/kgdb.c:180:29: error: lvalue required as left operand of assignment
|   instruction_pointer(regs) -= BREAK_INSTR_SIZE;

Reported-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Fixes: f51e2f1911 ("ARC: make sure instruction_pointer() returns unsigned value")
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2015-08-05 11:12:00 +05:30
parent b89aa12c17
commit 87ce62802f
2 changed files with 37 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
arch/arc/include/asm/ptrace.h
View File

@ -20,20 +20,20 @@
struct pt_regs {
/* Real registers */
long bta; /* bta_l1, bta_l2, erbta */
unsigned long bta; /* bta_l1, bta_l2, erbta */
long lp_start, lp_end, lp_count;
unsigned long lp_start, lp_end, lp_count;
long status32; /* status32_l1, status32_l2, erstatus */
long ret; /* ilink1, ilink2 or eret */
long blink;
long fp;
long r26; /* gp */
unsigned long status32; /* status32_l1, status32_l2, erstatus */
unsigned long ret; /* ilink1, ilink2 or eret */
unsigned long blink;
unsigned long fp;
unsigned long r26; /* gp */
long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
long sp; /* user/kernel sp depending on where we came from */
long orig_r0;
unsigned long sp; /* User/Kernel depending on where we came from */
unsigned long orig_r0;
/*
* To distinguish bet excp, syscall, irq
@ -55,13 +55,13 @@ struct pt_regs {
unsigned long event;
};
long user_r25;
unsigned long user_r25;
};
#else
struct pt_regs {
long orig_r0;
unsigned long orig_r0;
union {
struct {
@ -76,26 +76,26 @@ struct pt_regs {
unsigned long event;
};
long bta; /* bta_l1, bta_l2, erbta */
unsigned long bta; /* bta_l1, bta_l2, erbta */
long user_r25;
unsigned long user_r25;
long r26; /* gp */
long fp;
long sp; /* user/kernel sp depending on where we came from */
unsigned long r26; /* gp */
unsigned long fp;
unsigned long sp; /* user/kernel sp depending on where we came from */
long r12;
unsigned long r12;
/*------- Below list auto saved by h/w -----------*/
long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
long blink;
long lp_end, lp_start, lp_count;
unsigned long blink;
unsigned long lp_end, lp_start, lp_count;
long ei, ldi, jli;
unsigned long ei, ldi, jli;
long ret;
long status32;
unsigned long ret;
unsigned long status32;
};
#endif
@ -103,10 +103,10 @@ struct pt_regs {
/* Callee saved registers - need to be saved only when you are scheduled out */
struct callee_regs {
long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
unsigned long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
};
#define instruction_pointer(regs) (unsigned long)((regs)->ret)
#define instruction_pointer(regs) ((regs)->ret)
#define profile_pc(regs) instruction_pointer(regs)
/* return 1 if user mode or 0 if kernel mode */
@ -142,7 +142,7 @@ struct callee_regs {
static inline long regs_return_value(struct pt_regs *regs)
{
return regs->r0;
return (long)regs->r0;
}
#endif /* !__ASSEMBLY__ */

20
arch/arc/include/uapi/asm/ptrace.h
View File

@ -32,20 +32,20 @@
*/
struct user_regs_struct {
long pad;
unsigned long pad;
struct {
long bta, lp_start, lp_end, lp_count;
long status32, ret, blink, fp, gp;
long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
long sp;
unsigned long bta, lp_start, lp_end, lp_count;
unsigned long status32, ret, blink, fp, gp;
unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
unsigned long sp;
} scratch;
long pad2;
unsigned long pad2;
struct {
long r25, r24, r23, r22, r21, r20;
long r19, r18, r17, r16, r15, r14, r13;
unsigned long r25, r24, r23, r22, r21, r20;
unsigned long r19, r18, r17, r16, r15, r14, r13;
} callee;
long efa; /* break pt addr, for break points in delay slots */
long stop_pc; /* give dbg stop_pc after ensuring brkpt trap */
unsigned long efa; /* break pt addr, for break points in delay slots */
unsigned long stop_pc; /* give dbg stop_pc after ensuring brkpt trap */
};
#endif /* !__ASSEMBLY__ */