Debugging ltrace只打印两个调用

我在文字处理器上运行了ltrace，打开了一个示例文件，但令人惊讶的是，我只接到了两个电话

__libc_start_main(0x8048820, 1, 0xbfe08844, 0x8048850, 0x80488b0 <unfinished ...>
_ZN10AP_UnixApp4mainEPKciPPc(0x8048910, 1, 0xbfe08844, 0xb61feff4, 0x8048850) = 0
+++ exited (status 0) +++

uuu libc_ustart_umain（0x8048820，1，0xbfe08444，0x8048850，0x80488b0
_ZN10AP_UnixApp4mainEPKciPPc（0x8048910,1,0xbfe08844,0xb61feff4,0x8048850）=0
+++已退出（状态0）+++

---

ltrace不应该打印所有库调用吗？

问题是，

ltrace

只截取从主可执行文件（

abiword

）到其他共享库的调用，而不截取从一个共享库到另一个共享库的调用

对于

abiword

，

main

函数实际上没有太多功能：

(gdb) disas main
Dump of assembler code for function main:
   0x0000000000400a70 <+0>: mov    %rsi,%rdx
   0x0000000000400a73 <+3>: mov    %edi,%esi
   0x0000000000400a75 <+5>: mov    $0x400b6c,%edi
   0x0000000000400a7a <+10>:    jmpq   0x400950 <_ZN10AP_UnixApp4mainEPKciPPc@plt>
End of assembler dump.

生成（非常长）的跟踪，从以下内容开始：

528.528 attached /usr/bin/abiword
528.528 call #libpthread.so.0#_init(0x1, 0x7fffa8ba5bd8, 0x7fffa8ba5be8, 0x7fffa8ba5be8, 0x1f25bc2, 0x7)
528.528  call #libpthread.so.0#__pthread_initialize_minimal(0x1, 0x7fffa8ba5bd8, 0x7fffa8ba5be8, 0x7fffa8ba5be8, 0x1f25bc2, 0x7)
528.528   call #libpthread.so.0#__libc_sigaction(0x20, 0x7fffa8ba5a70, 0x0, 0x0, 0x1f25bc2, 0x7)
528.528   call #libpthread.so.0#__libc_sigaction(0x21, 0x7fffa8ba5a70, 0x0, 0x7f32501f27b0, 0x0, 0x7)
528.528   call #libc.so.6#getrlimit(0x3, 0x7fffa8ba5b10, 0x3f, 0x40, 0x0, 0x7) = 0
528.528   call #libc.so.6#sysconf(0x1e, 0x7fffa8ba5b10, 0x3f, 0x30220e7b17, 0x0, 0x7)
528.528    call #libc.so.6#getpagesize(0x1e, 0x7fffa8ba5b10, 0xfffffffffff51435, 0x30220e7b17, 0x0, 0x7) = 4096
528.528   leave #libc.so.6#sysconf = 4096
528.528   call #libc.so.6#__libc_dl_error_tsd(0x1e, 0x7fffa8ba5b10, 0x800000, 0x2a40, 0x0, 0x7) = 139854069229848
...

Ftrace文档

528.528 attached /usr/bin/abiword
528.528 call #libpthread.so.0#_init(0x1, 0x7fffa8ba5bd8, 0x7fffa8ba5be8, 0x7fffa8ba5be8, 0x1f25bc2, 0x7)
528.528  call #libpthread.so.0#__pthread_initialize_minimal(0x1, 0x7fffa8ba5bd8, 0x7fffa8ba5be8, 0x7fffa8ba5be8, 0x1f25bc2, 0x7)
528.528   call #libpthread.so.0#__libc_sigaction(0x20, 0x7fffa8ba5a70, 0x0, 0x0, 0x1f25bc2, 0x7)
528.528   call #libpthread.so.0#__libc_sigaction(0x21, 0x7fffa8ba5a70, 0x0, 0x7f32501f27b0, 0x0, 0x7)
528.528   call #libc.so.6#getrlimit(0x3, 0x7fffa8ba5b10, 0x3f, 0x40, 0x0, 0x7) = 0
528.528   call #libc.so.6#sysconf(0x1e, 0x7fffa8ba5b10, 0x3f, 0x30220e7b17, 0x0, 0x7)
528.528    call #libc.so.6#getpagesize(0x1e, 0x7fffa8ba5b10, 0xfffffffffff51435, 0x30220e7b17, 0x0, 0x7) = 4096
528.528   leave #libc.so.6#sysconf = 4096
528.528   call #libc.so.6#__libc_dl_error_tsd(0x1e, 0x7fffa8ba5b10, 0x800000, 0x2a40, 0x0, 0x7) = 139854069229848
...