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-rw-r--r--ANDROID_3.4.5/arch/arm/lib/backtrace.S152
1 files changed, 0 insertions, 152 deletions
diff --git a/ANDROID_3.4.5/arch/arm/lib/backtrace.S b/ANDROID_3.4.5/arch/arm/lib/backtrace.S
deleted file mode 100644
index cd07b581..00000000
--- a/ANDROID_3.4.5/arch/arm/lib/backtrace.S
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * linux/arch/arm/lib/backtrace.S
- *
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 27/03/03 Ian Molton Clean up CONFIG_CPU
- *
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
- .text
-
-@ fp is 0 or stack frame
-
-#define frame r4
-#define sv_fp r5
-#define sv_pc r6
-#define mask r7
-#define offset r8
-
-ENTRY(c_backtrace)
-
-#if !defined(CONFIG_FRAME_POINTER) || !defined(CONFIG_PRINTK)
- mov pc, lr
-ENDPROC(c_backtrace)
-#else
- stmfd sp!, {r4 - r8, lr} @ Save an extra register so we have a location...
- movs frame, r0 @ if frame pointer is zero
- beq no_frame @ we have no stack frames
-
- tst r1, #0x10 @ 26 or 32-bit mode?
- ARM( moveq mask, #0xfc000003 )
- THUMB( moveq mask, #0xfc000000 )
- THUMB( orreq mask, #0x03 )
- movne mask, #0 @ mask for 32-bit
-
-1: stmfd sp!, {pc} @ calculate offset of PC stored
- ldr r0, [sp], #4 @ by stmfd for this CPU
- adr r1, 1b
- sub offset, r0, r1
-
-/*
- * Stack frame layout:
- * optionally saved caller registers (r4 - r10)
- * saved fp
- * saved sp
- * saved lr
- * frame => saved pc
- * optionally saved arguments (r0 - r3)
- * saved sp => <next word>
- *
- * Functions start with the following code sequence:
- * mov ip, sp
- * stmfd sp!, {r0 - r3} (optional)
- * corrected pc => stmfd sp!, {..., fp, ip, lr, pc}
- */
-for_each_frame: tst frame, mask @ Check for address exceptions
- bne no_frame
-
-1001: ldr sv_pc, [frame, #0] @ get saved pc
-1002: ldr sv_fp, [frame, #-12] @ get saved fp
-
- sub sv_pc, sv_pc, offset @ Correct PC for prefetching
- bic sv_pc, sv_pc, mask @ mask PC/LR for the mode
-
-1003: ldr r2, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
- ldr r3, .Ldsi+4 @ adjust saved 'pc' back one
- teq r3, r2, lsr #10 @ instruction
- subne r0, sv_pc, #4 @ allow for mov
- subeq r0, sv_pc, #8 @ allow for mov + stmia
-
- ldr r1, [frame, #-4] @ get saved lr
- mov r2, frame
- bic r1, r1, mask @ mask PC/LR for the mode
- bl dump_backtrace_entry
-
- ldr r1, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
- ldr r3, .Ldsi+4
- teq r3, r1, lsr #10
- ldreq r0, [frame, #-8] @ get sp
- subeq r0, r0, #4 @ point at the last arg
- bleq .Ldumpstm @ dump saved registers
-
-1004: ldr r1, [sv_pc, #0] @ if stmfd sp!, {..., fp, ip, lr, pc}
- ldr r3, .Ldsi @ instruction exists,
- teq r3, r1, lsr #10
- subeq r0, frame, #16
- bleq .Ldumpstm @ dump saved registers
-
- teq sv_fp, #0 @ zero saved fp means
- beq no_frame @ no further frames
-
- cmp sv_fp, frame @ next frame must be
- mov frame, sv_fp @ above the current frame
- bhi for_each_frame
-
-1006: adr r0, .Lbad
- mov r1, frame
- bl printk
-no_frame: ldmfd sp!, {r4 - r8, pc}
-ENDPROC(c_backtrace)
-
- .pushsection __ex_table,"a"
- .align 3
- .long 1001b, 1006b
- .long 1002b, 1006b
- .long 1003b, 1006b
- .long 1004b, 1006b
- .popsection
-
-#define instr r4
-#define reg r5
-#define stack r6
-
-.Ldumpstm: stmfd sp!, {instr, reg, stack, r7, lr}
- mov stack, r0
- mov instr, r1
- mov reg, #10
- mov r7, #0
-1: mov r3, #1
- ARM( tst instr, r3, lsl reg )
- THUMB( lsl r3, reg )
- THUMB( tst instr, r3 )
- beq 2f
- add r7, r7, #1
- teq r7, #6
- moveq r7, #1
- moveq r1, #'\n'
- movne r1, #' '
- ldr r3, [stack], #-4
- mov r2, reg
- adr r0, .Lfp
- bl printk
-2: subs reg, reg, #1
- bpl 1b
- teq r7, #0
- adrne r0, .Lcr
- blne printk
- ldmfd sp!, {instr, reg, stack, r7, pc}
-
-.Lfp: .asciz "%cr%d:%08x"
-.Lcr: .asciz "\n"
-.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n"
- .align
-.Ldsi: .word 0xe92dd800 >> 10 @ stmfd sp!, {... fp, ip, lr, pc}
- .word 0xe92d0000 >> 10 @ stmfd sp!, {}
-
-#endif