如何编译源$ C $ C库NDK工具? [英] How to compile library with source code with NDK tools?
问题描述
如何使用源$ C $ C编译库?
我开发了Android NDK本地库。 有时候,我从logcat中得到了崩溃转储信息。
06-18 15:24:58.545:信息/ DEBUG(24667):*** *** *** *** *** *** *** * ** *** *** *** *** *** *** *** ***
06-18 15:24:58.545:信息/ DEBUG(24667):建立指纹:NVIDIA /和声/和声/和声:2.2 / FRF91 / 20110304.134348:ENG /测试键
06-18 15:24:58.545:信息/ DEBUG(24667):PID:25870,TID:26261>>> com.andtv<<<
06-18 15:24:58.545:信息/ DEBUG(24667):11(SIGSEGV),故障地址4a7b041c
06-18 15:24:58.545:信息/ DEBUG(24667):R0 4a7b041c R1 4a75220c R2 00000200 R3 0000006d
06-18 15:24:58.545:信息/ DEBUG(24667):R4 4a7b041d R5 00000000 R6 82434ad0 R7 4a752768
06-18 15:24:58.545:信息/ DEBUG(24667):R8 4a75220c R9 000004b4 10 4a752777 FP 00000000
06-18 15:24:58.545:信息/ DEBUG(24667):IP 00000000 SP 4a7521f8 LR 8202e11f PC afd1d9cc CPSR 00000030
06-18 15:24:58.545:信息/ DEBUG(24667):D0 3fcc745e0ab0ad85 D1 3fd24aaf828e1369
06-18 15:24:58.545:信息/ DEBUG(24667)D2 3fa56e5ff7cd8dc6 D3 3fe5568b9401f367
06-18 15:24:58.545:信息/ DEBUG(24667):D4 bfc34e892d87a4ea D5 bfd1c2b0f8ac7dc9
06-18 15:24:58.545:信息/ DEBUG(24667):D6 D7 3fe62e42fee00000 3ff0000000000000
06-18 15:24:58.545:信息/ DEBUG(24667):D8 4190000044038000 D9 42600000亿
06-18 15:24:58.545:信息/ DEBUG(24667):D10 423999a0423999a0 D11 0000000000000000
06-18 15:24:58.545:信息/ DEBUG(24667):D12 D13 0000000000000000 0000000000000000
06-18 15:24:58.545:信息/ DEBUG(24667):D14 D15 0000000000000000 0000000000000000
06-18 15:24:58.545:信息/ DEBUG(24667):SCR 80000012
06-18 15:24:58.565:ERROR / OMXPlayer(942):等待prepare 0x2b8fb0
06-18 15:24:58.925:信息/ DEBUG(24667):#00件0001d9cc /system/lib/libc.so
06-18 15:24:58.925:信息/ DEBUG(24667):#01件0002e11c /data/data/com.andtv/lib/libffmpeg.so
这是一个问题,如何找到真正的源头code地址2e11c? 我搜索从谷歌的一些解决方案,有人说:
ARM-EABI-objdump的-S my_library.so
但没有源$ C $ c在输出文本中,只有集会code那里。 我用的是样品的 HELLO-JNI 在ndk5r项目:
数量:JNI qrtt1 $臂EABI-objdump的-S ../libs/armeabi/libhello-jni.so
../libs/armeabi/libhello-jni.so:文件格式ELF32,littlearm
拆卸的段.text:
000002dc&其中; Java_com_example_hellojni_HelloJni_stringFromJNI计算值:
2DC:B500推{LR}
二维超声心动图:B083分的SP,#12
2E0:9001 STR R0,[SP,#4]
2E2:9100海峡R1,[SP,#0]
2E4:9b01 LDR R3,[SP,#4]
2E6:681A LDR R2,[R3,#0]
2E8:23a7 MOVS R3,#167
2EA:009B LSLS R3,R3,#2
2EC:58d2 LDR R2,[R2,R3]
2EE:9901 LDR R1,[SP,#4]
2f0:4b04 LDR R3,[PC,#16](304< Java_com_example_hellojni_HelloJni_stringFromJNI + 0x28>)
2F2:447B增加R3,PC
2F4:1c08添加R0,R1,#0
2F6:1c19添加R1,R3,#0
2F8:4790 BLX R2
2FA:1c03增加r3中时,r0,#0
2FC:1c18添加r0的,因为r 3,#0
2FE:B003加入SP,#12
300:bd00 POP {PC}
302:46c0 NOP(MOV R8,R8)
304:0012 LSLS R2,R2,#0
时它可以显示源-S选项?
[更新解决方案,2010年6月19日]
我发现NDK-gdb的教程:一个调试的JNI的例子为Android 。它说,NDK-build脚本会杀了我的调试符号。我试图弄清楚它是由乳宁NDK建造V = 1:
数量:JNI qrtt1 $ NDK建造V = 1
\ RM -f /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/lib*.so /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi-V7A / lib中*。所以/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/x86/lib*.so
RM -f /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi / gdbserver的/用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi- V7A / gdbserver的/用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ 86 / gdbserver的
RM -f /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi-V7A / gdb.setup /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/x86/gdb.setup
GDBSERVER:[臂的Linux androideabi-4.4.3]库/ armeabi / gdbserver的
MKDIR -p /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi
安装-p /Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/$p$pbuilt/gdbserver /用户/ qrtt1 / APP / Android的NDK-R5B /样品/个招呼-jni /库/ armeabi / gdbserver的
Gdbsetup:库/ armeabi / gdb.setup
回声设置solib搜索路径/用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI / OBJ /本地/ armeabi> /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup
回声目录/用户/ qrtt1 / APP / Android的NDK-R5B /平台/ Android为8 /弓臂/ usr / include目录/用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI / JNI /用户/ qrtt1 / APP / Android的NDK-R5B /来源/ CXX-STL /系统>> /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup
安装:libhello-jni.so =>库/ armeabi / libhello-jni.so
MKDIR -p /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI /库/ armeabi
安装-p /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ hello- JNI /库/ armeabi / libhello-jni.so
/Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/$p$pbuilt/darwin-x86/bin/arm-linux-androideabi-strip --strip-不需要/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/libhello-jni.so
该命令会剥夺我的调试符号:
<$p$p><$c$c>/Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/$p$pbuilt/darwin-x86/bin/arm-linux-androideabi-strip --strip-不需要/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/libhello-jni.so
我不知道要禁用条命令,因为我的NDK版本不同。不过,我可以用的。所以之前删除路径:
/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so
该人士$ C $ c是回:
数量:JNI qrtt1 $臂EABI-objdump的-S /用户/ qrtt1 / APP / Android的NDK-R5B /样本/ HELLO-JNI / OBJ /本地/ armeabi / libhello -jni.so
/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so:文件格式ELF32,littlearm
拆卸的段.text:
000002dc&其中; Java_com_example_hellojni_HelloJni_stringFromJNI计算值:
*应用程序/采样/ HELLO-JNI /项目/ src目录/ COM /例子/ HelloJni / HelloJni.java
* /
的jstring
Java_com_example_hellojni_HelloJni_stringFromJNI(JNIEnv的* ENV,
jobject THIZ)
{
2DC:B500推{LR}
二维超声心动图:B083分的SP,#12
2E0:9001 STR R0,[SP,#4]
2E2:9100海峡R1,[SP,#0]
返回(* ENV) - &GT; NewStringUTF(ENV,你好来自JNI!);
2E4:9b01 LDR R3,[SP,#4]
2E6:681A LDR R2,[R3,#0]
2E8:23a7 MOVS R3,#167
2EA:009B LSLS R3,R3,#2
2EC:58d2 LDR R2,[R2,R3]
2EE:9901 LDR R1,[SP,#4]
2f0:4b04 LDR R3,[PC,#16](304&LT; Java_com_example_hellojni_HelloJni_stringFromJNI + 0x28&GT;)
2F2:447B增加R3,PC
2F4:1c08添加R0,R1,#0
2F6:1c19添加R1,R3,#0
2F8:4790 BLX R2
2FA:1c03增加r3中时,r0,#0
}
2FC:1c18添加r0的,因为r 3,#0
2FE:B003加入SP,#12
300:bd00 POP {PC}
302:46c0 NOP(MOV R8,R8)
304:00000012 .word 0x00000012
NDK-建立NDK_DEBUG = 1
将保持符号调试。
How to compile library with source code ?
I am developing the native library with android ndk. Sometimes I got the crash dump messages from logcat.
06-18 15:24:58.545: INFO/DEBUG(24667): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-18 15:24:58.545: INFO/DEBUG(24667): Build fingerprint: 'nvidia/harmony/harmony/harmony:2.2/FRF91/20110304.134348:eng/test-keys'
06-18 15:24:58.545: INFO/DEBUG(24667): pid: 25870, tid: 26261 >>> com.andtv <<<
06-18 15:24:58.545: INFO/DEBUG(24667): signal 11 (SIGSEGV), fault addr 4a7b041c
06-18 15:24:58.545: INFO/DEBUG(24667): r0 4a7b041c r1 4a75220c r2 00000200 r3 0000006d
06-18 15:24:58.545: INFO/DEBUG(24667): r4 4a7b041d r5 00000000 r6 82434ad0 r7 4a752768
06-18 15:24:58.545: INFO/DEBUG(24667): r8 4a75220c r9 000004b4 10 4a752777 fp 00000000
06-18 15:24:58.545: INFO/DEBUG(24667): ip 00000000 sp 4a7521f8 lr 8202e11f pc afd1d9cc cpsr 00000030
06-18 15:24:58.545: INFO/DEBUG(24667): d0 3fcc745e0ab0ad85 d1 3fd24aaf828e1369
06-18 15:24:58.545: INFO/DEBUG(24667): d2 3fa56e5ff7cd8dc6 d3 3fe5568b9401f367
06-18 15:24:58.545: INFO/DEBUG(24667): d4 bfc34e892d87a4ea d5 bfd1c2b0f8ac7dc9
06-18 15:24:58.545: INFO/DEBUG(24667): d6 3fe62e42fee00000 d7 3ff0000000000000
06-18 15:24:58.545: INFO/DEBUG(24667): d8 4190000044038000 d9 4260000000000000
06-18 15:24:58.545: INFO/DEBUG(24667): d10 423999a0423999a0 d11 0000000000000000
06-18 15:24:58.545: INFO/DEBUG(24667): d12 0000000000000000 d13 0000000000000000
06-18 15:24:58.545: INFO/DEBUG(24667): d14 0000000000000000 d15 0000000000000000
06-18 15:24:58.545: INFO/DEBUG(24667): scr 80000012
06-18 15:24:58.565: ERROR/OMXPlayer(942): waiting to prepare 0x2b8fb0
06-18 15:24:58.925: INFO/DEBUG(24667): #00 pc 0001d9cc /system/lib/libc.so
06-18 15:24:58.925: INFO/DEBUG(24667): #01 pc 0002e11c /data/data/com.andtv/lib/libffmpeg.so
It is a problem how to find the real source code at address 2e11c? I search some solutions from google, someone said:
arm-eabi-objdump -S my_library.so
But no source code in the output text, only assembly code there. I use the sample hello-jni project in the ndk5r:
qty:jni qrtt1$ arm-eabi-objdump -S ../libs/armeabi/libhello-jni.so
../libs/armeabi/libhello-jni.so: file format elf32-littlearm
Disassembly of section .text:
000002dc <Java_com_example_hellojni_HelloJni_stringFromJNI>:
2dc: b500 push {lr}
2de: b083 sub sp, #12
2e0: 9001 str r0, [sp, #4]
2e2: 9100 str r1, [sp, #0]
2e4: 9b01 ldr r3, [sp, #4]
2e6: 681a ldr r2, [r3, #0]
2e8: 23a7 movs r3, #167
2ea: 009b lsls r3, r3, #2
2ec: 58d2 ldr r2, [r2, r3]
2ee: 9901 ldr r1, [sp, #4]
2f0: 4b04 ldr r3, [pc, #16] (304 <Java_com_example_hellojni_HelloJni_stringFromJNI+0x28>)
2f2: 447b add r3, pc
2f4: 1c08 adds r0, r1, #0
2f6: 1c19 adds r1, r3, #0
2f8: 4790 blx r2
2fa: 1c03 adds r3, r0, #0
2fc: 1c18 adds r0, r3, #0
2fe: b003 add sp, #12
300: bd00 pop {pc}
302: 46c0 nop (mov r8, r8)
304: 0012 lsls r2, r2, #0
Is it possible to show source with -S option ?
[UPDATE solution 2010/06/19]
I found the ndk-gdb tutorial: A debuggable JNI example for Android. it said, ndk-build script will kill my debug symbol. I try to figure out it by runing ndk-build V=1:
qty:jni qrtt1$ ndk-build V=1
\rm -f /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/lib*.so /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi-v7a/lib*.so /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/x86/lib*.so
rm -f /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdbserver /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi-v7a/gdbserver /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/x86/gdbserver
rm -f /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi-v7a/gdb.setup /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/x86/gdb.setup
Gdbserver : [arm-linux-androideabi-4.4.3] libs/armeabi/gdbserver
mkdir -p /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi
install -p /Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/gdbserver /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdbserver
Gdbsetup : libs/armeabi/gdb.setup
echo "set solib-search-path /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi" > /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup
echo "directory /Users/qrtt1/app/android-ndk-r5b/platforms/android-8/arch-arm/usr/include /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/jni /Users/qrtt1/app/android-ndk-r5b/sources/cxx-stl/system" >> /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/gdb.setup
Install : libhello-jni.so => libs/armeabi/libhello-jni.so
mkdir -p /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi
install -p /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/libhello-jni.so
/Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86/bin/arm-linux-androideabi-strip --strip-unneeded /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/libhello-jni.so
The command will strip my debug symbol:
/Users/qrtt1/app/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86/bin/arm-linux-androideabi-strip --strip-unneeded /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/libs/armeabi/libhello-jni.so
I have no idea to disable the strip command, because my ndk version is different. However, I can use the .so before stripped in the path:
/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so
The source code is back:
qty:jni qrtt1$ arm-eabi-objdump -S /Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so
/Users/qrtt1/app/android-ndk-r5b/samples/hello-jni/obj/local/armeabi/libhello-jni.so: file format elf32-littlearm
Disassembly of section .text:
000002dc <Java_com_example_hellojni_HelloJni_stringFromJNI>:
* apps/samples/hello-jni/project/src/com/example/HelloJni/HelloJni.java
*/
jstring
Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env,
jobject thiz )
{
2dc: b500 push {lr}
2de: b083 sub sp, #12
2e0: 9001 str r0, [sp, #4]
2e2: 9100 str r1, [sp, #0]
return (*env)->NewStringUTF(env, "Hello from JNI !");
2e4: 9b01 ldr r3, [sp, #4]
2e6: 681a ldr r2, [r3, #0]
2e8: 23a7 movs r3, #167
2ea: 009b lsls r3, r3, #2
2ec: 58d2 ldr r2, [r2, r3]
2ee: 9901 ldr r1, [sp, #4]
2f0: 4b04 ldr r3, [pc, #16] (304 <Java_com_example_hellojni_HelloJni_stringFromJNI+0x28>)
2f2: 447b add r3, pc
2f4: 1c08 adds r0, r1, #0
2f6: 1c19 adds r1, r3, #0
2f8: 4790 blx r2
2fa: 1c03 adds r3, r0, #0
}
2fc: 1c18 adds r0, r3, #0
2fe: b003 add sp, #12
300: bd00 pop {pc}
302: 46c0 nop (mov r8, r8)
304: 00000012 .word 0x00000012
ndk-build NDK_DEBUG=1
will keep the symbol for debug.
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