https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83013
Bug ID: 83013
Summary: MicroBlaze - #ident - Error: operation combines
symbols in different segments
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: nathan at nathanrossi dot com
Target Milestone: ---
Created attachment 42618
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42618&action=edit
pre-processed source
When compiling certain code which uses the #ident directive the output assembly
is broken with content being located in .sdata2 instead of .text.
See attached pre-processed basename.i from the shadow package.
microblazeel-oe-linux-gcc \
-mcpu=v10.0 -mlittle-endian -mxl-barrel-shift -mxl-pattern-compare
-mxl-reorder \
-mno-xl-soft-mul -mxl-multiply-high -mno-xl-soft-div -mhard-float \
-O2 -g -c \
-o basename.o \
-save-temps \
basename.i
basename.s: Assembler messages:
basename.s:961: Error: operation combines symbols in different segments
basename.s:962: Error: operation combines symbols in different segments
basename.s:965: Error: operation combines symbols in different segments
basename.s:966: Error: operation combines symbols in different segments
basename.s:969: Error: operation combines symbols in different segments
basename.s:970: Error: operation combines symbols in different segments
basename.s:976: Error: operation combines symbols in different segments
basename.s:977: Error: operation combines symbols in different segments
basename.s:980: Error: operation combines symbols in different segments
basename.s:981: Error: operation combines symbols in different segments
basename.s:987: Error: operation combines symbols in different segments
basename.s:988: Error: operation combines symbols in different segments
basename.s:991: Error: operation combines symbols in different segments
basename.s:992: Error: operation combines symbols in different segments
basename.s:997: Error: operation combines symbols in different segments
basename.s:998: Error: operation combines symbols in different segments
As can be seen in the output basename.s, the section is setup to be .text at
the beginning, but is switched to .sdata2 for the ident content but then never
changed back to .text.
.text
$Ltext0:
#APP
.sdata2
.ascii "$Id$\0"
#NO_APP
.align 2
.globl Basename
$LFB35:
$LM1:
.ent Basename
.type Basename, @function
Basename:
.frame r1,32,r15 # vars= 0, regs= 1, args= 24
.mask 0x00088000
$LVL0:
addik r1,r1,-32
Which results in the $LVL0-$Ltext0 (and others) crossing sections.
This may be a duplicate of a previously reported bug.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261
