GDB: ARM: regression: thumb-bx-pc.exp

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GDB: ARM: regression: thumb-bx-pc.exp

赵俊涛
Hi,
When I was doing a regression test, I found a problem from thumb-bx-pc.exp.  I load a symbol table by file command, then I use ‘disassemble main’ command and the result is correct.
When I use file command again to load the same symbol table, the result of ‘disassemble main’ is wrong. Here's the log.

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(gdb) file "/home/juntao_zhao/debugger/test/8_2_repo_sdlc/run/outputs/gdb.arch/thumb-bx-pc/thumb-bx-pc"
Reading symbols from /home/juntao_zhao/debugger/test/8_2_repo_sdlc/run/outputs/gdb.arch/thumb-bx-pc/thumb-bx-pc...done.
(gdb) disassemble main
Dump of assembler code for function main:
   0x0000821c <+0>:     bx      pc
   0x0000821e <+2>:     nop
   0x00008220 <+4>:     mov     r0, #0
   0x00008224 <+8>:     bx      lr
End of assembler dump.
(gdb) file "/home/juntao_zhao/debugger/test/8_2_repo_sdlc/run/outputs/gdb.arch/thumb-bx-pc/thumb-bx-pc"
Load new symbol table from "/home/juntao_zhao/debugger/test/8_2_repo_sdlc/run/outputs/gdb.arch/thumb-bx-pc/thumb-bx-pc"? (y or n) y
Reading symbols from /home/juntao_zhao/debugger/test/8_2_repo_sdlc/run/outputs/gdb.arch/thumb-bx-pc/thumb-bx-pc...done.
(gdb) disassemble  main
Dump of assembler code for function main:
   0x0000821c <+0>:     bx      pc
   0x0000821e <+2>:     nop
   0x00008220 <+4>:     movs    r0, r0
   0x00008222 <+6>:     b.n     0x8966
   0x00008224 <+8>:     vrhadd.u16      d14, d14, d31
End of assembler dump.

I'm surprised and I don't know why. Could you give me some advice?

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