diff options
Diffstat (limited to 'sys/i386/isa/npx.c')
| -rw-r--r-- | sys/i386/isa/npx.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/i386/isa/npx.c b/sys/i386/isa/npx.c index aaf2eb5..a4f5b34 100644 --- a/sys/i386/isa/npx.c +++ b/sys/i386/isa/npx.c @@ -141,11 +141,19 @@ void stop_emulating(void); (cpu_fxsr ? \ (thread)->td_pcb->pcb_save.sv_xmm.sv_env.en_sw : \ (thread)->td_pcb->pcb_save.sv_87.sv_env.en_sw) +#define SET_FPU_CW(savefpu, value) do { \ + if (cpu_fxsr) \ + (savefpu)->sv_xmm.sv_env.en_cw = (value); \ + else \ + (savefpu)->sv_87.sv_env.en_cw = (value); \ +} while (0) #else /* CPU_ENABLE_SSE */ #define GET_FPU_CW(thread) \ (thread->td_pcb->pcb_save.sv_87.sv_env.en_cw) #define GET_FPU_SW(thread) \ (thread->td_pcb->pcb_save.sv_87.sv_env.en_sw) +#define SET_FPU_CW(savefpu, value) \ + (savefpu)->sv_87.sv_env.en_cw = (value) #endif /* CPU_ENABLE_SSE */ typedef u_char bool_t; @@ -793,6 +801,8 @@ npxdna(void) * load sanitized registers. */ fpurstor(&npx_cleanstate); + if (pcb->pcb_initial_npxcw != __INITIAL_NPXCW__) + fldcw(&pcb->pcb_initial_npxcw); pcb->pcb_flags |= PCB_NPXINITDONE; } else { /* @@ -891,6 +901,7 @@ npxgetregs(td, addr) if ((td->td_pcb->pcb_flags & PCB_NPXINITDONE) == 0) { bcopy(&npx_cleanstate, addr, sizeof(npx_cleanstate)); + SET_FPU_CW(addr, td->td_pcb->pcb_initial_npxcw); return (_MC_FPOWNED_NONE); } s = intr_disable(); |
