https://sourceware.org/bugzilla/show_bug.cgi?id=19332
Bug ID: 19332
Summary: [mips] gas fails to build glibc/iconv/gconv_conf.c for
mips32r2
Product: binutils
Version: 2.27 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: manuel.lauss at gmail dot com
Target Milestone: ---
Created attachment 8831
--> https://sourceware.org/bugzilla/attachment.cgi?id=8831&action=edit
gcc's assembly of glibc/iconv/gconv_conf.c
I'm trying to build a cross toolchain for mips32r2 little-endian hardfloat,
and gas currently chokes on building git-head of glibc, specifically
iconv/gconv_conf.c. (binutils git head, gcc-5.3, glibc git head).
mips32r2el-unknown-linux-gnu-gcc -mips32r2 -EL -Wl,-O1 -Wl,--as-needed
-mabi=32 gconv_conf.c -c -std=gnu11 -fgnu89-inline -O2 -Wall -Wundef
-Wwrite-strings -fmerge-all-constants -fno-strict-aliasing -frounding-math
-pipe -Wstrict-prototypes -Wold-style-definition
-DGCONV_PATH='"/usr/lib/gconv"' -ftls-model=initial-exec -U_FORTIFY_SOURCE
-I../include
-I/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl/iconv
-I/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl
-I../sysdeps/unix/sysv/linux/mips/mips32/fpu
-I../sysdeps/unix/sysv/linux/mips/mips32 -I../sysdeps/unix/sysv/linux/mips
-I../sysdeps/mips/nptl -I../sysdeps/unix/sysv/linux/include
-I../sysdeps/unix/sysv/linux -I../sysdeps/nptl -I../sysdeps/pthread
-I../sysdeps/gnu -I../sysdeps/unix/inet -I../sysdeps/unix/sysv
-I../sysdeps/unix/mips/mips32 -I../sysdeps/unix/mips -I../sysdeps/unix
-I../sysdeps/posix -I../sysdeps/mips/mips32/fpu -I../sysdeps/mips/mips32
-I../sysdeps/mips/ieee754 -I../sysdeps/mips/include -I../sysdeps/mips
-I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754/dbl-64
-I../sysdeps/wordsize-32 -I../sysdeps/mips/fpu -I../sysdeps/ieee754
-I../sysdeps/generic -I.. -I../libio -I. -nostdinc -isystem
/usr/lib/gcc/mips32r2el-unknown-linux-gnu/5.2.0/include -isystem
/usr/lib/gcc/mips32r2el-unknown-linux-gnu/5.2.0/include-fixed -isystem
/usr/mips32r2el-unknown-linux-gnu/usr/include -D_LIBC_REENTRANT -include
/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h -DPIC -o
/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl/iconv/gconv_conf.o
-MD -MP -MF
/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl/iconv/gconv_conf.o.dt
-MT
/tmp-ram/portage/cross-mips32r2el-unknown-linux-gnu/glibc-2.22-r1/work/build-default-mips32r2el-unknown-linux-gnu-nptl/iconv/gconv_conf.o
{standard input}: Assembler messages:
{standard input}:794: Warning: macro instruction expanded into multiple
instructions
{standard input}:798: Error: macro used $at after ".set noat"
{standard input}:798: Warning: macro instruction expanded into multiple
instructions
{standard input}:821: Warning: macro instruction expanded into multiple
instructions
{standard input}:823: Error: macro used $at after ".set noat"
{standard input}:823: Warning: macro instruction expanded into multiple
instructions
It seems to an "ll/sc" pair, could this be a gcc issue?
__gconv_get_path:
.frame $fp,88,$31 # vars= 24, regs= 10/0, args= 16, gp= 8
.mask 0xc0ff0000,-4
.fmask 0x00000000,0
.set noreorder
.cpload $25
.set reorder
addiu $sp,$sp,-88
sw $fp,80($sp)
move $fp,$sp
sw $31,84($sp)
sw $23,76($sp)
sw $22,72($sp)
sw $21,68($sp)
sw $20,64($sp)
sw $19,60($sp)
sw $18,56($sp)
sw $17,52($sp)
sw $16,48($sp)
.cprestore 16
sw $0,24($fp)
.set noreorder
.set nomacro
.set noat
1:
ll $3,lock.10985 <====================
bne $3,$0,2f
li $2,0
li $1,1
sc $1,lock.10985 <====================
beq $1,$0,1b
li $2,1
sync
2:
.set at
.set macro
.set reorder
bne $2,$0,$L152
la $4,lock.10985
sw $3,24($fp)
jal __lll_lock_wait_private
I'm attaching the assembly file.
Thanks!
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