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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 { struct pt_regs {
/* Real registers */ /* 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 */ unsigned long status32; /* status32_l1, status32_l2, erstatus */
long ret; /* ilink1, ilink2 or eret */ unsigned long ret; /* ilink1, ilink2 or eret */
long blink; unsigned long blink;
long fp; unsigned long fp;
long r26; /* gp */ 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 */ unsigned long sp; /* User/Kernel depending on where we came from */
long orig_r0; unsigned long orig_r0;
/* /*
* To distinguish bet excp, syscall, irq * To distinguish bet excp, syscall, irq
@ -55,13 +55,13 @@ struct pt_regs {
unsigned long event; unsigned long event;
}; };
long user_r25; unsigned long user_r25;
}; };
#else #else
struct pt_regs { struct pt_regs {
long orig_r0; unsigned long orig_r0;
union { union {
struct { struct {
@ -76,26 +76,26 @@ struct pt_regs {
unsigned long event; 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 */ unsigned long r26; /* gp */
long fp; unsigned long fp;
long sp; /* user/kernel sp depending on where we came from */ unsigned long sp; /* user/kernel sp depending on where we came from */
long r12; unsigned long r12;
/*------- Below list auto saved by h/w -----------*/ /*------- 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; unsigned long blink;
long lp_end, lp_start, lp_count; unsigned long lp_end, lp_start, lp_count;
long ei, ldi, jli; unsigned long ei, ldi, jli;
long ret; unsigned long ret;
long status32; unsigned long status32;
}; };
#endif #endif
@ -103,10 +103,10 @@ struct pt_regs {
/* Callee saved registers - need to be saved only when you are scheduled out */ /* Callee saved registers - need to be saved only when you are scheduled out */
struct callee_regs { 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) #define profile_pc(regs) instruction_pointer(regs)
/* return 1 if user mode or 0 if kernel mode */ /* 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) static inline long regs_return_value(struct pt_regs *regs)
{ {
return regs->r0; return (long)regs->r0;
} }
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */

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

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