Dynamic linking not working on PowerPC Linux.
With dynamic linking enabled, the first binary compiled by the stage1 compiler (dll-split) crashes with an illegal instruction exception.
(gdb) bt
#0 0x0f3f2e24 in cr_str () from /home/erikd/Git/ghc-upstream/rts/dist/build/libHSrts-ghc7.7.20130630.so
#1 0x0f3de490 in stg_catchzh () from /home/erikd/Git/ghc-upstream/rts/dist/build/libHSrts-ghc7.7.20130630.so
#2 0x0f3cc01c in scheduleWaitThread () from /home/erikd/Git/ghc-upstream/rts/dist/build/libHSrts-ghc7.7.20130630.so
#3 0x0f3c63dc in rts_evalLazyIO () from /home/erikd/Git/ghc-upstream/rts/dist/build/libHSrts-ghc7.7.20130630.so
#4 0x0f3c8300 in hs_main () from /home/erikd/Git/ghc-upstream/rts/dist/build/libHSrts-ghc7.7.20130630.so
#5 0x10006ae4 in main ()
Disassmbling the function gives:
Dump of assembler code for function cr_str:
0x0f3f2dec: rlwimi r1,r2,10,0,16
0x0f3f2df0: xoris r2,r27,27237
0x0f3f2df4: ori r20,r27,8293
0x0f3f2df8: xoris r20,r19,25970
0x0f3f2dfc: oris r4,r11,8448
0x0f3f2e00: .long 0xfffeae2c
0x0f3f2e04: .long 0xfffeae2c
0x0f3f2e08: .long 0xfffeae2c
0x0f3f2e0c: .long 0xfffeae2c
0x0f3f2e10: .long 0xfffeae2c
0x0f3f2e14: .long 0xfffeae2c
0x0f3f2e18: .long 0xfffeae2c
0x0f3f2e1c: .long 0xfffeae2c
0x0f3f2e20: .long 0xfffeae2c
=> 0x0f3f2e24: .long 0xfffeae20
0x0f3f2e28: .long 0xfffeae20
0x0f3f2e2c: .long 0xfffeae20
0x0f3f2e30: .long 0xfffeae20
However function stg_catchzh() in rts/Exception.cmm does not call cr_str().
If I disable dynamic lbraries by adding powerpc-unknow-linux to NoSharedLibsPlatformList
in mk/config.mk.in
then the compile builds.