What is 'GCC_3.0' in gcc-3.1's libgcc.map?

[Christian Jönsson]

Just curious here... I bootstrap-build gcc-3.1 on my debian woody
sparc-linux system and I happened to look at the file
objdir/gcc/libgcc.map. In that file, I see the following:

GLIBC_2.0 {
  global:
	__register_frame_table;
	__deregister_frame_info;
	__moddi3;
	__umoddi3;
	__register_frame;
	__frame_state_for;
	__register_frame_info;
	__divdi3;
	__udivdi3;
	__register_frame_info_table;
	__deregister_frame;

  local:
	*;
};
GCC_3.0 {
  global:
	__floatdisf;
	__udivmoddi4;
	_Unwind_GetGR;
	_Unwind_GetIP;
	__cmpdi2;
	__subvdi3;
	__fixunssfdi;
	__lshrdi3;
	__fixunsdfsi;
	__addvsi3;
	__ucmpdi2;
	__fixsfdi;
	_Unwind_SetGR;
	_Unwind_SetIP;
	__floatdidf;
	__clear_cache;
	_Unwind_ForcedUnwind;
	__ffsdi2;
	_Unwind_GetRegionStart;
	__ashrdi3;
	__negvsi2;
	__fixunsdfdi;
	_Unwind_GetLanguageSpecificData;
	_Unwind_GetTextRelBase;
	_Unwind_GetDataRelBase;
	__absvsi2;
	__deregister_frame_info_bases;
	__addvdi3;
	_Unwind_Resume;
	__mulvsi3;
	__subvsi3;
	__fixdfdi;
	__register_frame_info_table_bases;
	_Unwind_Find_FDE;
	_Unwind_DeleteException;
	__negvdi2;
	_Unwind_RaiseException;
	__register_frame_info_bases;
	__fixunssfsi;
	__absvdi2;
	__muldi3;
	__negdi2;
	__ashldi3;
	__mulvdi3;
} GLIBC_2.0;


Now, what is this? I am curious of what the string(s) GCC_3.0 (and
GLIBC_2.0) refers to.

(I do have gcc-3.0.3 installed on my system but only glibc-2.2.5...)

TIA,

/ChJ