[ECOS] MIPS GDB information

[Jonathan Larmour]

Tim Michals wrote:
> 
> Jifl,
> 
> Here's what I have:
> 
> C:\idtCygnet\build>mips-elf-objdump -h boot.exe
> [snip]

It does indeed look like you've got no debug info. Odd. The most obvious
thing to try is building with alternatives like -ggdb or -gdwarf-2

After that, in your gcc sources edit gcc/config/mips/elf.h and change this:

#ifndef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
#endif

to:

#define DWARF2_DEBUGGING_INFO
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

Also try adding this to elf.h:

/* For the 'preferred' cases ("gN" and "ggdbN") we need to tell the 
   gnu assembler not to generate debugging information. */
   
#define SUBTARGET_ASM_DEBUGGING_SPEC "\
%{!mmips-as: \
  %{g:-g0} %{g0:-g0} %{g1:-g0} %{g2:-g0} %{g3:-g0} \
  %{ggdb:-g0} %{ggdb0:-g0} %{ggdb1:-g0} %{ggdb2:-g0} %{ggdb3:-g0} \
  %{gdwarf-2*:-g0}} \
%{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \
%{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2}
%{gstabs+3:-g3} \
%{gcoff:-g} %{gcoff0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3}"


Jifl
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