tags 328031 patch
thanks
Hi,
The bug is still present and is reproducible on an up-to-date sid system.
After some investigation I was able to track it down to some strange
sparc-specific tinkering with registers performed in
erts/emulator/beam/beam_emu.c:
/*
* On certain platforms, make sure the main variables really are placed
* in registers.
*/
#if defined(__GNUC__) && defined(sparc) && !defined(DEBUG)
# define REG_x0 asm("%l0")
# define REG_xregs asm("%l1")
# define REG_htop asm("%l2")
# define REG_stop asm("%l3")
# define REG_I asm("%l4")
# define REG_fcalls asm("%l5")
# define REG_tmp_arg1 asm("%l6")
# define REG_tmp_arg2 asm("%l7")
#else
# define REG_x0
# define REG_xregs
# define REG_htop
# define REG_stop
# define REG_I
# define REG_fcalls
# define REG_tmp_arg1
# define REG_tmp_arg2
#endif
That sure does not work out well, since the bus error messages leading to
build failure are happening in the process_main() function in the same
file, where these defines are used for variable definitions. I can't
really tell what is going wrong here, but removing the #if ... #endif in
such a way that the REG_* defines always expand to nothing (the attached patch
implements this change) allowed to build the package successfully. The
patch and the complete build log may also be found at
http://www.wooyd.org/debian/erlang
I also have sparc binary debs, in case someone wants them.
Best regards,
Jurij Smakov [EMAIL PROTECTED]
Key: http://www.wooyd.org/pgpkey/ KeyID: C99E03CC
diff -aur a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
--- a/erts/emulator/beam/beam_emu.c 2005-08-29 06:13:24.000000000 -0700
+++ b/erts/emulator/beam/beam_emu.c 2005-12-19 23:35:08.000000000 -0800
@@ -1013,16 +1013,6 @@
* in registers.
*/
-#if defined(__GNUC__) && defined(sparc) && !defined(DEBUG)
-# define REG_x0 asm("%l0")
-# define REG_xregs asm("%l1")
-# define REG_htop asm("%l2")
-# define REG_stop asm("%l3")
-# define REG_I asm("%l4")
-# define REG_fcalls asm("%l5")
-# define REG_tmp_arg1 asm("%l6")
-# define REG_tmp_arg2 asm("%l7")
-#else
# define REG_x0
# define REG_xregs
# define REG_htop
@@ -1031,7 +1021,6 @@
# define REG_fcalls
# define REG_tmp_arg1
# define REG_tmp_arg2
-#endif
/*
* process_main() is called twice:
