12 Oct
2010
12 Oct
'10
2:52 p.m.
Dear Joakim Tjernlund,
In message 1286887081-23172-1-git-send-email-Joakim.Tjernlund@transmode.se you wrote:
This add relocation of .got entries produced by -fpic. -fpic produces 2-3% smaller code and is faster. Unfortunately gcc promotes -fpic to -fPIC when -mrelocatable is used so one need a very small patch to gcc too(sent upstream).
What happens when one uses this patch in combination with a "standard" (i. e. older, unpatched) GCC?
START_GOT GOT_ENTRY(_GOT2_TABLE_)
- GOT_ENTRY(_GOT_TABLE_)
- GOT_ENTRY(_GLOBAL_OFFSET_TABLE_) GOT_ENTRY(__bss_start) GOT_ENTRY(_end)
@@ -951,6 +953,22 @@ in_ram: stw r0,0(r3) 2: bdnz 1b
- lwz r4,GOT(_GLOBAL_OFFSET_TABLE_)
What exactly is _GLOBAL_OFFSET_TABLE_ good for, and how does it differ from _GOT_TABLE_ ?
Best regards,
Wolfgang Denk
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