Opened 9 years ago

Closed 9 years ago

#9447 closed Bugs (fixed)

atomic/detail/gcc-ppc.hpp: Bad ppc assembler?

Reported by: smr@… Owned by: timblechmann
Milestone: To Be Determined Component: atomic
Version: Boost 1.54.0 Severity: Problem
Keywords: Cc:

Description

Supercollider is FTBFS in ppc, with the following message: 

/tmp/cc01sBbv.s: Assembler messages:
/tmp/cc01sBbv.s:7543: Error: operand out of range (0x000000000001cd58 is not between 0xffffffffffff8000 and 0x0000000000007ffc)
/tmp/cc01sBbv.s:7545: Error: operand out of range (0x000000000001cd50 is not between 0xffffffffffff8000 and 0x0000000000007ffc)

The generated assembler relevant section: 

#APP
# 1160 "/usr/include/boost/atomic/detail/gcc-ppc.hpp" 1
lwarx 7,0,11
cmpw 7, 9
bne- 2f
stwcx. 10,0,11
bne- 2f
addi 8,0,1

The faulty lines are the bne- instructions. These instructions are manually written in gcc-ppc.hpp.

Reported as Debian bug #723117.

Change History (1)

comment:1 by Andrey Semashev, 9 years ago

Resolution: → fixed
Status: new → closed

Hopefully, fixed: ​https://github.com/boostorg/atomic/commit/e3536bec7561c77bb2d75c1c3a45491b717f220d. I have no way of testing it other than it cross-compiles.

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