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[ARC] Local symbols relocation cleanup

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bfd/
2016-02-29  Cupertino Miranda  <cmiranda@synopsys.com>

	* elf32-arc.c (elf_arc_relocate_section): Added rules to fix the
	relocation addend when sections get merged.

gas/
2016-02-29  Cupertino Miranda  <cmiranda@synopsys.com>
	    Claudiu Zissulescu  <Claudiu.Zissulescu@synopsys.com>

        * config/tc-arc.c (arc_extra_reloc): Change size to 0.
        (tc_arc_fix_adjustable): Changed default return value to 1.
        * testsuite/gas/arc/j.d: Updated expected symbol
        * testsuite/gas/arc/jl.d: Likewise
        * testsuite/gas/arc/relax-avoid1.d: Likewise
        * testsuite/gas/arc/st.d: Likewise

ld/
2016-02-29 Cupertino Miranda  <cmiranda@synopsys.com>

	* testsuite/ld-elf/merge.d: Removed xfail for ARC.
	* testsuite/ld-elf/merge2.d: Likewise.
	* testsuite/ld-elf/merge3.d: Likewise.
This commit is contained in:
Claudiu Zissulescu 2016-02-29 16:51:11 +01:00
parent 7e4588997e
commit 841fdfcdd9
12 changed files with 96 additions and 40 deletions
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5
bfd/ChangeLog
View file

@ -1,3 +1,8 @@
2016-02-29 Cupertino Miranda <cmiranda@synopsys.com>
* elf32-arc.c (elf_arc_relocate_section): Added rules to fix the
relocation addend when sections get merged.
2016-02-29 Cupertino Miranda <Cupertino.Miranda@synopsys.com>
* elf32-arc.c (arc_elf_final_write_processing): Add condition to

16
bfd/elf32-arc.c
View file

@ -1158,6 +1158,22 @@ elf_arc_relocate_section (bfd * output_bfd,
reloc_data.sym_value = sym->st_value;
reloc_data.sym_section = sec;
/* Mergeable section handling. */
if ((sec->flags & SEC_MERGE)
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
asection *msec;
msec = sec;
rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym,
&msec, rel->r_addend);
rel->r_addend -= (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
rel->r_addend += msec->output_section->vma + msec->output_offset;
reloc_data.reloc_addend = rel->r_addend;
}
if ((is_reloc_for_GOT (howto)
|| is_reloc_for_TLS (howto)) && entry != NULL)
{

10
gas/ChangeLog
View file

@ -1,3 +1,13 @@
2016-02-29 Cupertino Miranda <cmiranda@synopsys.com>
Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>
* config/tc-arc.c (arc_extra_reloc): Change size to 0.
(tc_arc_fix_adjustable): Changed default return value to 1.
* testsuite/gas/arc/j.d: Updated expected symbol
* testsuite/gas/arc/jl.d: Likewise
* testsuite/gas/arc/relax-avoid1.d: Likewise
* testsuite/gas/arc/st.d: Likewise
2016-02-29 Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>
* config/tc-arc.c: Enable code density instructions for ARC EM.

25
gas/config/tc-arc.c
View file

@ -591,10 +591,31 @@ arc_extra_reloc (int r_type)
lab = symbol_find_or_make (lab_name);
restore_line_pointer (c);
}
/* These relocations exist as a mechanism for the compiler to tell the
linker how to patch the code if the tls model is optimised. However,
the relocation itself does not require any space within the assembler
fragment, and so we pass a size of 0.
The lines that generate these relocations look like this:
.tls_gd_ld @.tdata`bl __tls_get_addr@plt
The '.tls_gd_ld @.tdata' is processed first and generates the
additional relocation, while the 'bl __tls_get_addr@plt' is processed
second and generates the additional branch.
It is possible that the additional relocation generated by the
'.tls_gd_ld @.tdata' will be attached at the very end of one fragment,
while the 'bl __tls_get_addr@plt' will be generated as the first thing
in the next fragment. This will be fine; both relocations will still
appear to be at the same address in the generated object file.
However, this only works as the additional relocation is generated
with size of 0 bytes. */
fixS *fixP
= fix_new (frag_now, /* Which frag? */
frag_now_fix (), /* Where in that frag? */
2, /* size: 1, 2, or 4 usually. */
0, /* size: 1, 2, or 4 usually. */
sym, /* X_add_symbol. */
0, /* X_add_number. */
FALSE, /* TRUE if PC-relative relocation. */
@ -3551,7 +3572,7 @@ tc_arc_fix_adjustable (fixS *fixP)
break;
}
return 0; /* FIXME! return 1, fix it in the linker. */
return 1;
}
/* Compute the reloc type of an expression EXP. */

56
gas/testsuite/gas/arc/j.d
View file

@ -7,61 +7,61 @@ Disassembly of section .text:
[0-9a-f]+ <text_label>:
0: 2020 0f80 0000 0000 j 0
4: R_ARC_32_ME text_label
4: R_ARC_32_ME .text
8: 20e0 0f80 0000 0000 j 0
c: R_ARC_32_ME text_label
c: R_ARC_32_ME .text
10: 20e0 0f80 0000 0000 j 0
14: R_ARC_32_ME text_label
14: R_ARC_32_ME .text
18: 20e0 0f81 0000 0000 jeq 0
1c: R_ARC_32_ME text_label
1c: R_ARC_32_ME .text
20: 20e0 0f81 0000 0000 jeq 0
24: R_ARC_32_ME text_label
24: R_ARC_32_ME .text
28: 20e0 0f82 0000 0000 jne 0
2c: R_ARC_32_ME text_label
2c: R_ARC_32_ME .text
30: 20e0 0f82 0000 0000 jne 0
34: R_ARC_32_ME text_label
34: R_ARC_32_ME .text
38: 20e0 0f83 0000 0000 jp 0
3c: R_ARC_32_ME text_label
3c: R_ARC_32_ME .text
40: 20e0 0f83 0000 0000 jp 0
44: R_ARC_32_ME text_label
44: R_ARC_32_ME .text
48: 20e0 0f84 0000 0000 jn 0
4c: R_ARC_32_ME text_label
4c: R_ARC_32_ME .text
50: 20e0 0f84 0000 0000 jn 0
54: R_ARC_32_ME text_label
54: R_ARC_32_ME .text
58: 20e0 0f85 0000 0000 jc 0
5c: R_ARC_32_ME text_label
5c: R_ARC_32_ME .text
60: 20e0 0f85 0000 0000 jc 0
64: R_ARC_32_ME text_label
64: R_ARC_32_ME .text
68: 20e0 0f85 0000 0000 jc 0
6c: R_ARC_32_ME text_label
6c: R_ARC_32_ME .text
70: 20e0 0f86 0000 0000 jnc 0
74: R_ARC_32_ME text_label
74: R_ARC_32_ME .text
78: 20e0 0f86 0000 0000 jnc 0
7c: R_ARC_32_ME text_label
7c: R_ARC_32_ME .text
80: 20e0 0f86 0000 0000 jnc 0
84: R_ARC_32_ME text_label
84: R_ARC_32_ME .text
88: 20e0 0f87 0000 0000 jv 0
8c: R_ARC_32_ME text_label
8c: R_ARC_32_ME .text
90: 20e0 0f87 0000 0000 jv 0
94: R_ARC_32_ME text_label
94: R_ARC_32_ME .text
98: 20e0 0f88 0000 0000 jnv 0
9c: R_ARC_32_ME text_label
9c: R_ARC_32_ME .text
a0: 20e0 0f88 0000 0000 jnv 0
a4: R_ARC_32_ME text_label
a4: R_ARC_32_ME .text
a8: 20e0 0f89 0000 0000 jgt 0
ac: R_ARC_32_ME text_label
ac: R_ARC_32_ME .text
b0: 20e0 0f8a 0000 0000 jge 0
b4: R_ARC_32_ME text_label
b4: R_ARC_32_ME .text
b8: 20e0 0f8b 0000 0000 jlt 0
bc: R_ARC_32_ME text_label
bc: R_ARC_32_ME .text
c0: 20e0 0f8c 0000 0000 jle 0
c4: R_ARC_32_ME text_label
c4: R_ARC_32_ME .text
c8: 20e0 0f8d 0000 0000 jhi 0
cc: R_ARC_32_ME text_label
cc: R_ARC_32_ME .text
d0: 20e0 0f8e 0000 0000 jls 0
d4: R_ARC_32_ME text_label
d4: R_ARC_32_ME .text
d8: 20e0 0f8f 0000 0000 jpnz 0
dc: R_ARC_32_ME text_label
dc: R_ARC_32_ME .text
e0: 2020 0f80 0000 0000 j 0
e4: R_ARC_32_ME external_text_label
e8: 20a0 0000 j 0

4
gas/testsuite/gas/arc/jl.d
View file

@ -7,8 +7,8 @@ Disassembly of section .text:
[0-9a-f]+ <text_label>:
0: 2022 0f80 0000 0000 jl 0
4: R_ARC_32_ME text_label
4: R_ARC_32_ME .text
8: 20e3 0042 jlne.d \[r1\]
c: 78e0 nop_s
e: 20e2 0f80 0000 0000 jl 0
12: R_ARC_32_ME text_label
12: R_ARC_32_ME .text

2
gas/testsuite/gas/arc/relax-avoid1.d
View file

@ -9,5 +9,5 @@ Disassembly of section .text:
00000000 <.text>:
0: 78e0 nop_s
2: 240a 0f80 0000 0000 mov r4,0
6: R_ARC_32_ME .LC2
6: R_ARC_32_ME .rodata
a: 78e0 nop_s

6
gas/testsuite/gas/arc/st.d
View file

@ -5,7 +5,7 @@
Disassembly of section .text:
[0-9a-f]+ <.L1-0x40>:
[0-9a-f]+ <.text>:
0: 1a00 0040 st r1,\[r2\]
4: 1a0e 0040 st r1,\[r2,14\]
8: 1a00 0042 stb r1,\[r2\]
@ -20,9 +20,7 @@ Disassembly of section .text:
30: 1a03 0068 st.di.aw r1,\[r2,3\]
34: 1a04 006c st[hw]+.di.aw r1,\[r2,4\]
38: 1c04 1f80 0000 0000 st 0,\[r12,4\]
3c: R_ARC_32_ME .L1
[0-9a-f]+ <.L1>:
3c: R_ARC_32_ME .text\+0x40
40: 212b 0080 sr r1,\[r2\]
44: 216b 0380 sr r1,\[0xe\]
48: 262b 7040 0000 03e8 sr 0x3e8,\[r1\]

6
ld/ChangeLog
View file

@ -1,3 +1,9 @@
2016-02-29 Cupertino Miranda <cmiranda@synopsys.com>
* testsuite/ld-elf/merge.d: Removed xfail for ARC.
* testsuite/ld-elf/merge2.d: Likewise.
* testsuite/ld-elf/merge3.d: Likewise.
2016-02-29 Cupertino Miranda <Cupertino.Miranda@synopsys.com>
* scripttempl/arclinux.sc: Force .tdata and .tbss to always be

2
ld/testsuite/ld-elf/merge.d
View file

@ -1,7 +1,7 @@
#source: merge.s
#ld: -T merge.ld
#objdump: -s
#xfail: "arc-*-*" "avr-*-*" "bfin-*-*" "cr16-*-*" "cris*-*-*" "crx-*-*" "d10v-*-*" "d30v-*-*"
#xfail: "avr-*-*" "bfin-*-*" "cr16-*-*" "cris*-*-*" "crx-*-*" "d10v-*-*" "d30v-*-*"
#xfail: "dlx-*-*" "fr30-*-*" "frv-*-*" "hppa*64*-*-*" "h8300-*-*" "score-*-*"
#xfail: "i370-*-*" "i860-*-*" "i960-*-*" "ip2k-*-*" "iq2000-*-*" "lm32-*-*"
#xfail: "mcore-*-*" "mn102*-*-*" "ms1-*-*" "mep-*-*"

2
ld/testsuite/ld-elf/merge2.d
View file

@ -1,7 +1,7 @@
#source: merge2.s
#ld: -T merge.ld
#objdump: -s
#xfail: "arc-*-*" "d30v-*-*" "dlx-*-*" "hppa64-*-*"
#xfail: "d30v-*-*" "dlx-*-*" "hppa64-*-*"
#xfail: "i960-*-*" "ip2k-*-*" "pj-*-*"
.*: file format .*elf.*

2
ld/testsuite/ld-elf/merge3.d
View file

@ -1,7 +1,7 @@
#source: merge3.s
#ld: -T merge.ld
#objdump: -s
#xfail: "arc-*-*" "d30v-*-*" "dlx-*-*" "hppa64-*-*"
#xfail: "d30v-*-*" "dlx-*-*" "hppa64-*-*"
#xfail: "i960-*-*" "ip2k-*-*" "pj-*-*"
.*: file format .*elf.*