https://sourceware.org/bugzilla/show_bug.cgi?id=30422
Bug ID: 30422
Summary: or1k relocation truncated to fit: R_OR1K_GOT16 even
when using -mcmodel=large
Product: binutils
Version: 2.40
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: gcc at scarsita dot it
Target Milestone: ---
Created attachment 14863
--> https://sourceware.org/bugzilla/attachment.cgi?id=14863&action=edit
Patch to pre-scan the presence of R_OR1K_GOT_AHI16 to detect -mcmodel=large
usage
While compiling ghostscript shared library with -mcmodel=large on or1k, there
is still the GOT overflow error:
./soobj/gxdevndi.o: in function `gx_devn_reduce_colored_halftone':
gxdevndi.c:(.text+0x7c): relocation truncated to fit: R_OR1K_GOT16 against
symbol `fc_color_quo' defined in .data.rel.ro.local section in
./soobj/gxdevndi.o
./soobj/gxblend.o: in function `art_blend_pixel_8_inline':
gxblend.c:(.text+0x1954): relocation truncated to fit: R_OR1K_GOT16 against
symbol `art_blend_sq_diff_8' defined in .rodata section in ./soobj/gxblend.o
This is because in some case gcc place R_OR1K_GOT_AHI16 *after* R_OR1K_GOT16,
so ld does not detected the overflow handling:
gxdevndi.o: file format elf32-or1k
RELOCATION RECORDS FOR [.text]:
OFFSET TYPE VALUE
0000004c R_OR1K_GOTPC_HI16 _GLOBAL_OFFSET_TABLE_-0x00000004
00000050 R_OR1K_GOTPC_LO16 _GLOBAL_OFFSET_TABLE_
0000007c R_OR1K_GOT16 fc_color_quo
000000dc R_OR1K_GOT_AHI16 fc_color_quo
0000014c R_OR1K_GOT_AHI16 gx_dc_type_pure
0000015c R_OR1K_GOT16 gx_dc_type_pure
00000260 R_OR1K_GOT_AHI16 gx_dc_type_ht_binary
00000270 R_OR1K_GOT16 gx_dc_type_ht_binary
000002d8 R_OR1K_GOT_AHI16 fc_color_quo
000002e8 R_OR1K_GOT16 fc_color_quo
[...]
gxblend.o: file format elf32-or1k
RELOCATION RECORDS FOR [.text]:
OFFSET TYPE VALUE
00001530 R_OR1K_GOTPC_HI16 _GLOBAL_OFFSET_TABLE_-0x00000004
00001534 R_OR1K_GOTPC_LO16 _GLOBAL_OFFSET_TABLE_
000017ac R_OR1K_GOTOFF_AHI16 .rodata.str1.1
000017b8 R_OR1K_PLT26 memcpy
000018f0 R_OR1K_GOTOFF_LO16 .rodata.str1.1
000018f4 R_OR1K_PLT26 dprintf_file_and_line
000018fc R_OR1K_GOTOFF_AHI16 .rodata.str1.1+0x00000011
00001908 R_OR1K_GOTOFF_LO16 .rodata.str1.1+0x00000011
0000190c R_OR1K_PLT26 errprintf_nomem
00001954 R_OR1K_GOT16 art_blend_sq_diff_8
000019ac R_OR1K_GOT_AHI16 art_blend_soft_light_8
000019b0 R_OR1K_GOT_AHI16 art_blend_sq_diff_8
000019d4 R_OR1K_GOT16 art_blend_soft_light_8
[...]
One solution could be pre-scanning the presence of R_OR1K_GOT_AHI16, like in
the attached patch (tested, and it works).
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