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Commit 228adef1 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] vfp: make fpexc bit names less verbose 



Use the fpexc abbreviated names instead of long verbose names
for fpexc bits.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 21d1ca04

arch/arm/vfp/vfphw.S

+6 −6
Original line number Diff line number Diff line
@@ -74,14 +74,14 @@ vfp_support_entry: 


	VFPFMRX	r1, FPEXC		@ Is the VFP enabled?

	DBGSTR1	"fpexc %08x", r1

	tst	r1, #FPEXC_ENABLE

	tst	r1, #FPEXC_EN

	bne	look_for_VFP_exceptions	@ VFP is already enabled



	DBGSTR1 "enable %x", r10

	ldr	r3, last_VFP_context_address

	orr	r1, r1, #FPEXC_ENABLE	@ user FPEXC has the enable bit set

	orr	r1, r1, #FPEXC_EN	@ user FPEXC has the enable bit set

	ldr	r4, [r3, r11, lsl #2]	@ last_VFP_context pointer

	bic	r5, r1, #FPEXC_EXCEPTION @ make sure exceptions are disabled

	bic	r5, r1, #FPEXC_EX	@ make sure exceptions are disabled

	cmp	r4, r10

	beq	check_for_exception	@ we are returning to the same

					@ process, so the registers are
@@ -124,7 +124,7 @@ no_old_VFP_process: 
	VFPFMXR	FPSCR, r5		@ restore status



check_for_exception:

	tst	r1, #FPEXC_EXCEPTION

	tst	r1, #FPEXC_EX

	bne	process_exception	@ might as well handle the pending

					@ exception before retrying branch

					@ out before setting an FPEXC that
@@ -136,10 +136,10 @@ check_for_exception: 




look_for_VFP_exceptions:

	tst	r1, #FPEXC_EXCEPTION

	tst	r1, #FPEXC_EX

	bne	process_exception

	VFPFMRX	r5, FPSCR

	tst	r5, #FPSCR_IXE		@ IXE doesn't set FPEXC_EXCEPTION !

	tst	r5, #FPSCR_IXE		@ IXE doesn't set FPEXC_EX !

	bne	process_exception



	@ Fall into hand on to next handler - appropriate coproc instr

arch/arm/vfp/vfpmodule.c

+6 −6
Original line number Diff line number Diff line
@@ -53,7 +53,7 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v) 
		 * case the thread migrates to a different CPU. The

		 * restoring is done lazily.

		 */

		if ((fpexc & FPEXC_ENABLE) && last_VFP_context[cpu]) {

		if ((fpexc & FPEXC_EN) && last_VFP_context[cpu]) {

			vfp_save_state(last_VFP_context[cpu], fpexc);

			last_VFP_context[cpu]->hard.cpu = cpu;

		}
@@ -70,7 +70,7 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v) 
		 * Always disable VFP so we can lazily save/restore the

		 * old state.

		 */

		fmxr(FPEXC, fpexc & ~FPEXC_ENABLE);

		fmxr(FPEXC, fpexc & ~FPEXC_EN);

		return NOTIFY_DONE;

	}
@@ -81,13 +81,13 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v) 
		 */

		memset(vfp, 0, sizeof(union vfp_state));



		vfp->hard.fpexc = FPEXC_ENABLE;

		vfp->hard.fpexc = FPEXC_EN;

		vfp->hard.fpscr = FPSCR_ROUND_NEAREST;



		/*

		 * Disable VFP to ensure we initialise it first.

		 */

		fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);

		fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);

	}



	/* flush and release case: Per-thread VFP cleanup. */
@@ -229,7 +229,7 @@ void VFP9_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs) 
	/*

	 * Enable access to the VFP so we can handle the bounce.

	 */

	fmxr(FPEXC, fpexc & ~(FPEXC_EXCEPTION|FPEXC_INV|FPEXC_UFC|FPEXC_IOC));

	fmxr(FPEXC, fpexc & ~(FPEXC_EX|FPEXC_INV|FPEXC_UFC|FPEXC_IOC));



	orig_fpscr = fpscr = fmrx(FPSCR);
@@ -248,7 +248,7 @@ void VFP9_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs) 
	/*

	 * Modify fpscr to indicate the number of iterations remaining

	 */

	if (fpexc & FPEXC_EXCEPTION) {

	if (fpexc & FPEXC_EX) {

		u32 len;



		len = fpexc + (1 << FPEXC_LENGTH_BIT);

include/asm-arm/vfp.h

+2 −2
Original line number Diff line number Diff line
@@ -26,8 +26,8 @@ 
#define FPSID_REV_MASK		(0xF  << FPSID_REV_BIT)



/* FPEXC bits */

#define FPEXC_EXCEPTION		(1<<31)

#define FPEXC_ENABLE		(1<<30)

#define FPEXC_EX		(1 << 31)

#define FPEXC_EN		(1 << 30)



/* FPSCR bits */

#define FPSCR_DEFAULT_NAN	(1<<25)