tjh.dev
+20
arch/arm/kernel/traps.c
+20
arch/arm/kernel/traps.c
···
74
74
dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
75
75
}
76
76
77
+
void dump_backtrace_stm(u32 *stack, u32 instruction)
78
+
{
79
+
char str[80], *p;
80
+
unsigned int x;
81
+
int reg;
82
+
83
+
for (reg = 10, x = 0, p = str; reg >= 0; reg--) {
84
+
if (instruction & BIT(reg)) {
85
+
p += sprintf(p, " r%d:%08x", reg, *stack--);
86
+
if (++x == 6) {
87
+
x = 0;
88
+
p = str;
89
+
printk("%s\n", str);
90
+
}
91
+
}
92
+
}
93
+
if (p != str)
94
+
printk("%s\n", str);
95
+
}
96
+
77
97
#ifndef CONFIG_ARM_UNWIND
78
98
/*
79
99
* Stack pointers should always be within the kernels view of
+5
arch/arm/kernel/vmlinux-xip.lds.S
+5
arch/arm/kernel/vmlinux-xip.lds.S
···
3
3
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
4
4
*/
5
5
6
+
/* No __ro_after_init data in the .rodata section - which will always be ro */
7
+
#define RO_AFTER_INIT_DATA
8
+
6
9
#include <asm-generic/vmlinux.lds.h>
7
10
#include <asm/cache.h>
8
11
#include <asm/thread_info.h>
···
225
222
ARM_EXIT_KEEP(EXIT_DATA)
226
223
. = ALIGN(PAGE_SIZE);
227
224
__init_end = .;
225
+
226
+
*(.data..ro_after_init)
228
227
229
228
NOSAVE_DATA
230
229
CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
+3
-34
arch/arm/lib/backtrace.S
+3
-34
arch/arm/lib/backtrace.S
···
10
10
* 27/03/03 Ian Molton Clean up CONFIG_CPU
11
11
*
12
12
*/
13
+
#include <linux/kern_levels.h>
13
14
#include <linux/linkage.h>
14
15
#include <asm/assembler.h>
15
16
.text
···
84
83
teq r3, r1, lsr #11
85
84
ldreq r0, [frame, #-8] @ get sp
86
85
subeq r0, r0, #4 @ point at the last arg
87
-
bleq .Ldumpstm @ dump saved registers
86
+
bleq dump_backtrace_stm @ dump saved registers
88
87
89
88
1004: ldr r1, [sv_pc, #0] @ if stmfd sp!, {..., fp, ip, lr, pc}
90
89
ldr r3, .Ldsi @ instruction exists,
91
90
teq r3, r1, lsr #11
92
91
subeq r0, frame, #16
93
-
bleq .Ldumpstm @ dump saved registers
92
+
bleq dump_backtrace_stm @ dump saved registers
94
93
95
94
teq sv_fp, #0 @ zero saved fp means
96
95
beq no_frame @ no further frames
···
113
112
.long 1004b, 1006b
114
113
.popsection
115
114
116
-
#define instr r4
117
-
#define reg r5
118
-
#define stack r6
119
-
120
-
.Ldumpstm: stmfd sp!, {instr, reg, stack, r7, lr}
121
-
mov stack, r0
122
-
mov instr, r1
123
-
mov reg, #10
124
-
mov r7, #0
125
-
1: mov r3, #1
126
-
ARM( tst instr, r3, lsl reg )
127
-
THUMB( lsl r3, reg )
128
-
THUMB( tst instr, r3 )
129
-
beq 2f
130
-
add r7, r7, #1
131
-
teq r7, #6
132
-
moveq r7, #0
133
-
adr r3, .Lcr
134
-
addne r3, r3, #1 @ skip newline
135
-
ldr r2, [stack], #-4
136
-
mov r1, reg
137
-
adr r0, .Lfp
138
-
bl printk
139
-
2: subs reg, reg, #1
140
-
bpl 1b
141
-
teq r7, #0
142
-
adrne r0, .Lcr
143
-
blne printk
144
-
ldmfd sp!, {instr, reg, stack, r7, pc}
145
-
146
-
.Lfp: .asciz " r%d:%08x%s"
147
-
.Lcr: .asciz "\n"
148
115
.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n"
149
116
.align
150
117
.Ldsi: .word 0xe92dd800 >> 11 @ stmfd sp!, {... fp, ip, lr, pc}
+1
-1
arch/arm/mm/dma-mapping.c
+1
-1
arch/arm/mm/dma-mapping.c