如何arm-none-eabi-objcopy
将我的文件复制/翻译.axf
成.bin
适合闪存到设备的文件lm4tools
?
我有一个 ~20KB 的.axf
文件编译并链接到arm-none-eabi-*
. 对于任何有兴趣的人,这是与 Stellaris Launchpad 一起使用的。
我正在尝试修改stellaris-launchpad-template-gcc
项目提供的示例以使用 C++ 代码进行编译。我已经设法让它生成一个格式的.axf
文件elf32-littlearm
(根据.lst
文件),但是当我尝试做
arm-none-eabi-objcopy -v -O binary main.axf foo.bin
要将其转换为可编程文件,.bin
文件输出的大小为 0 字节。这个问题描述了一个类似的问题。我确信.axf
文件是完整的,为什么我的.bin
文件没有填充任何内容?如果我删除-O binary
,该文件将被很好地复制。该目录是可写的,所有权限都很好。我已经尝试使用各种术语在 SO 和互联网的其余部分上进行搜索,所有这些都没有任何用处。以前好像没有人遇到过这个问题。
运行arm-none-eabi-objdump -D main.axf
会在似乎是汇编程序中生成文件转储:
main.axf: file format elf32-littlearm
Disassembly of section .debug_info:
00000000 <_end_text>:
0: 00000082 andeq r0, r0, r2, lsl #1
4: 00000002 andeq r0, r0, r2
8: 01040000 mrseq r0, (UNDEF: 4)
c: 00000057 andeq r0, r0, r7, asr r0
10: 00000c04 andeq r0, r0, r4, lsl #24
14: 00002300 andeq r2, r0, r0, lsl #6
...
28: 08010200 stmdaeq r1, {r9}
2c: 00000015 andeq r0, r0, r5, lsl r0
30: 00410103 subeq r0, r1, r3, lsl #2
34: 32010000 andcc r0, r1, #0
38: 00000048 andeq r0, r0, r8, asr #32
...
48: 69050404 stmdbvs r5, {r2, sl}
4c: 0500746e streq r7, [r0, #-1134] ; 0x46e
50: 00000001 andeq r0, r0, r1
54: 46430100 strbmi r0, [r3], -r0, lsl #2
...
这是正确的,还是我什至没有正确编译,因为这似乎是某种汇编程序?
关于文件的一些信息.axf
:
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: ARM
Version: 0x1
Entry point address: 0x0
Start of program headers: 52 (bytes into file)
Start of section headers: 20372 (bytes into file)
Flags: 0x5000000, Version5 EABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 0
Size of section headers: 40 (bytes)
Number of section headers: 14
Section header string table index: 11
运行后arm-none-eabi-readelf -lS main.axf
,不返回程序头:
There are 14 section headers, starting at offset 0x4f94:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[ 0] NULL 00000000 000000 000000 00 0 0 0
[ 1] .debug_info PROGBITS 00000000 000034 0019a6 00 0 0 1
[ 2] .debug_abbrev PROGBITS 00000000 0019da 0005ad 00 0 0 1
[ 3] .debug_loc PROGBITS 00000000 001f87 001796 00 0 0 1
[ 4] .debug_aranges PROGBITS 00000000 003720 000088 00 0 0 8
[ 5] .debug_ranges PROGBITS 00000000 0037a8 000130 00 0 0 1
[ 6] .debug_line PROGBITS 00000000 0038d8 00077d 00 0 0 1
[ 7] .debug_str PROGBITS 00000000 004055 000aa8 01 MS 0 0 1
[ 8] .comment PROGBITS 00000000 004afd 00003a 01 MS 0 0 1
[ 9] .ARM.attributes ARM_ATTRIBUTES 00000000 004b37 000039 00 0 0 1
[10] .debug_frame PROGBITS 00000000 004b70 000388 00 0 0 4
[11] .shstrtab STRTAB 00000000 004ef8 00009a 00 0 0 1
[12] .symtab SYMTAB 00000000 0051c4 000200 10 13 18 4
[13] .strtab STRTAB 00000000 0053c4 0000e0 00 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), T (TLS), E (exclude), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)
There are no program headers in this file.