[Bug gas/18599] New: Use .strtab section for section names in ELF object files

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18599

            Bug ID: 18599
           Summary: Use .strtab section for section names in ELF object
                    files
           Product: binutils
           Version: 2.26 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

address@hidden xxx]$ cat x.S
#define GLOBAL(x) \
  .section .data.##x,"aw",%progbits; \
  .globl x; x: .byte 0

GLOBAL(xxxxxxxxxxxxxxxxx1)
GLOBAL(xxxxxxxxxxxxxxxxx2)
GLOBAL(xxxxxxxxxxxxxxxxx3)
GLOBAL(xxxxxxxxxxxxxxxxx4)
address@hidden xxx]$ make
gcc -B./  -c -o x.o x.S
./ld  -shared -o x.so x.o
readelf -x .strtab -x .shstrtab x.o

Hex dump of section '.shstrtab':
  0x00000000 002e7379 6d746162 002e7374 72746162 ..symtab..strtab
  0x00000010 002e7368 73747274 6162002e 74657874 ..shstrtab..text
  0x00000020 002e6461 7461002e 62737300 2e646174 ..data..bss..dat
  0x00000030 612e7878 78787878 78787878 78787878 a.xxxxxxxxxxxxxx
  0x00000040 78787831 002e6461 74612e78 78787878 xxx1..data.xxxxx
  0x00000050 78787878 78787878 78787878 32002e64 xxxxxxxxxxxx2..d
  0x00000060 6174612e 78787878 78787878 78787878 ata.xxxxxxxxxxxx
  0x00000070 78787878 7833002e 64617461 2e787878 xxxxx3..data.xxx
  0x00000080 78787878 78787878 78787878 78783400 xxxxxxxxxxxxxx4.


Hex dump of section '.strtab':
  0x00000000 00787878 78787878 78787878 78787878 .xxxxxxxxxxxxxxx
  0x00000010 78783100 78787878 78787878 78787878 xx1.xxxxxxxxxxxx
  0x00000020 78787878 78320078 78787878 78787878 xxxxx2.xxxxxxxxx
  0x00000030 78787878 78787878 33007878 78787878 xxxxxxxx3.xxxxxx
  0x00000040 78787878 78787878 78787834 00       xxxxxxxxxxx4.

address@hidden xxx]$ 

If we use .strtab, instead of .shstrtab, for section names in object
files, it will reduce file size for object files compiled with
"-ffunction-sections -fdata-sections".

-- 
You are receiving this mail because:
You are on the CC list for the bug.