Hello. Bart Oldeman wrote: > exception happens -- I guess that was just meant for debugging). > Thanks (to Stas also), The "SB16 fixes from Stas Sergeev via x.zupftom@xxxxxx on linux-msdos." is actually also the related FPU fix. There was a division by zero there in pcm_samp_period() (when called without the necessary checks), which I became aware of, because it started to produce SIGFPE when I played with vm86_fpu_state struct. Which means that the comment in do_vm86.c about fnsave is wrong, and the code that restores the dosemu FPU state should likely to be returned. You can, for example, memset the vm86_fpu_state to 0 in fpu_reset() and see the SIGFPE coming from all around the sound code (no other code use FPU in dosemu). Also, I found no docs about this FPU init/reset stuff, so everything in this patch is just a wild guesses based on a look into a bochs code. Also, there is a need to add the handling for exception 0x13 (SIMD FPE), which is what the SIGFPE is about today. I mean, at least print_exception_info() should write something meaningfull about SIGFPE instead of "Unknown exception". So I guess this patch needs more work, but it should be harmless in its current form too. -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
