Am 20.05.2011 um 12:32 schrieb Peter Maydell:
On 15 May 2011 15:13, Aurelien Jarno <aurel...@aurel32.net> wrote:
Instead of using a table which doesn't correspond to anything from
physical in the CPU, use directly the constants in helper_fld*_ST0().
Actually I rather suspect there is effectively a table in the CPU
indexed by the last 3 bits of the FLD* opcode... It would be
possible to implement this group of insns in QEMU with a single
helper function that took the index into the array, but since the
array seems to be causing weird compilation problems we might
as well stick with the lots-of-helpers approach, at which point
this is a sensible cleanup.
In OpenBIOS we once ran into a similar error on ppc64 where a cast
would've resulted in the truncation of a static pointer ... could this
be an alignment issue here, that it's being truncated by the floatx80
cast? I tried using __attribute__((packed)) on the floatx80 type
without luck.
Or maybe the constant width is being handled weird, with LL being 128
bits rather than the expected 64 bits? ;)
I wasn't specifically asking for the table to be removed, just for
some working solution.
Andreas
