From 6cd843f315b7e0a753bcda79de1b66be9f061b3c Mon Sep 17 00:00:00 2001 From: jhb Date: Wed, 25 Mar 2009 14:17:08 +0000 Subject: Rename (fpu|npx)_cleanstate to (fpu|npx)_initialstate to better reflect their purpose. Inspired by: bde MFC after: 1 month --- sys/amd64/amd64/fpu.c | 21 +++++++++++---------- sys/i386/isa/npx.c | 26 +++++++++++++------------- 2 files changed, 24 insertions(+), 23 deletions(-) diff --git a/sys/amd64/amd64/fpu.c b/sys/amd64/amd64/fpu.c index 8f16c46..c2f7d00 100644 --- a/sys/amd64/amd64/fpu.c +++ b/sys/amd64/amd64/fpu.c @@ -101,7 +101,7 @@ static void fpu_clean_state(void); SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD, NULL, 1, "Floating point instructions executed in hardware"); -static struct savefpu fpu_cleanstate; +static struct savefpu fpu_initialstate; /* * Initialize the floating point unit. On the boot CPU we generate a @@ -123,13 +123,13 @@ fpuinit(void) mxcsr = __INITIAL_MXCSR__; ldmxcsr(mxcsr); if (PCPU_GET(cpuid) == 0) { - fxsave(&fpu_cleanstate); - if (fpu_cleanstate.sv_env.en_mxcsr_mask) - cpu_mxcsr_mask = fpu_cleanstate.sv_env.en_mxcsr_mask; + fxsave(&fpu_initialstate); + if (fpu_initialstate.sv_env.en_mxcsr_mask) + cpu_mxcsr_mask = fpu_initialstate.sv_env.en_mxcsr_mask; else cpu_mxcsr_mask = 0xFFBF; - bzero(fpu_cleanstate.sv_fp, sizeof(fpu_cleanstate.sv_fp)); - bzero(fpu_cleanstate.sv_xmm, sizeof(fpu_cleanstate.sv_xmm)); + bzero(fpu_initialstate.sv_fp, sizeof(fpu_initialstate.sv_fp)); + bzero(fpu_initialstate.sv_xmm, sizeof(fpu_initialstate.sv_xmm)); } start_emulating(); intr_restore(savecrit); @@ -416,10 +416,11 @@ fpudna(void) if ((pcb->pcb_flags & PCB_FPUINITDONE) == 0) { /* - * This is the first time this thread has used the FPU, - * explicitly load sanitized registers. + * This is the first time this thread has used the FPU or + * the PCB doesn't contain a clean FPU state. Explicitly + * load an initial state. */ - fxrstor(&fpu_cleanstate); + fxrstor(&fpu_initialstate); if (pcb->pcb_initial_fpucw != __INITIAL_FPUCW__) fldcw(&pcb->pcb_initial_fpucw); pcb->pcb_flags |= PCB_FPUINITDONE; @@ -453,7 +454,7 @@ fpugetregs(struct thread *td, struct savefpu *addr) register_t s; if ((td->td_pcb->pcb_flags & PCB_FPUINITDONE) == 0) { - bcopy(&fpu_cleanstate, addr, sizeof(fpu_cleanstate)); + bcopy(&fpu_initialstate, addr, sizeof(fpu_initialstate)); addr->sv_env.en_cw = td->td_pcb->pcb_initial_fpucw; return (_MC_FPOWNED_NONE); } diff --git a/sys/i386/isa/npx.c b/sys/i386/isa/npx.c index a4f5b34..e57d9d4 100644 --- a/sys/i386/isa/npx.c +++ b/sys/i386/isa/npx.c @@ -181,7 +181,7 @@ SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD, static volatile u_int npx_intrs_while_probing; static volatile u_int npx_traps_while_probing; -static union savefpu npx_cleanstate; +static union savefpu npx_initialstate; static bool_t npx_ex16; static bool_t npx_exists; static bool_t npx_irq13; @@ -423,24 +423,24 @@ npx_attach(dev) s = intr_disable(); stop_emulating(); - fpusave(&npx_cleanstate); + fpusave(&npx_initialstate); start_emulating(); #ifdef CPU_ENABLE_SSE if (cpu_fxsr) { - if (npx_cleanstate.sv_xmm.sv_env.en_mxcsr_mask) + if (npx_initialstate.sv_xmm.sv_env.en_mxcsr_mask) cpu_mxcsr_mask = - npx_cleanstate.sv_xmm.sv_env.en_mxcsr_mask; + npx_initialstate.sv_xmm.sv_env.en_mxcsr_mask; else cpu_mxcsr_mask = 0xFFBF; - bzero(npx_cleanstate.sv_xmm.sv_fp, - sizeof(npx_cleanstate.sv_xmm.sv_fp)); - bzero(npx_cleanstate.sv_xmm.sv_xmm, - sizeof(npx_cleanstate.sv_xmm.sv_xmm)); + bzero(npx_initialstate.sv_xmm.sv_fp, + sizeof(npx_initialstate.sv_xmm.sv_fp)); + bzero(npx_initialstate.sv_xmm.sv_xmm, + sizeof(npx_initialstate.sv_xmm.sv_xmm)); /* XXX might need even more zeroing. */ } else #endif - bzero(npx_cleanstate.sv_87.sv_ac, - sizeof(npx_cleanstate.sv_87.sv_ac)); + bzero(npx_initialstate.sv_87.sv_ac, + sizeof(npx_initialstate.sv_87.sv_ac)); intr_restore(s); #ifdef I586_CPU_XXX if (cpu_class == CPUCLASS_586 && npx_ex16 && @@ -798,9 +798,9 @@ npxdna(void) /* * This is the first time this thread has used the FPU or * the PCB doesn't contain a clean FPU state. Explicitly - * load sanitized registers. + * load an initial state. */ - fpurstor(&npx_cleanstate); + fpurstor(&npx_initialstate); if (pcb->pcb_initial_npxcw != __INITIAL_NPXCW__) fldcw(&pcb->pcb_initial_npxcw); pcb->pcb_flags |= PCB_NPXINITDONE; @@ -900,7 +900,7 @@ npxgetregs(td, addr) return (_MC_FPOWNED_NONE); if ((td->td_pcb->pcb_flags & PCB_NPXINITDONE) == 0) { - bcopy(&npx_cleanstate, addr, sizeof(npx_cleanstate)); + bcopy(&npx_initialstate, addr, sizeof(npx_initialstate)); SET_FPU_CW(addr, td->td_pcb->pcb_initial_npxcw); return (_MC_FPOWNED_NONE); } -- cgit v1.1