Commit fa681a18 authored by Randolph Chung's avatar Randolph Chung Committed by Kyle McMartin
Browse files

[PARISC] Disable use of fpregs in pa_memcpy 



Disable use of fpregs in pa_memcpy, and turn on the
-mdisable-fpregs flag.

Signed-off-by: default avatarRandolph Chung <tausq@parisc-linux.org>

Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 7efe1611

arch/parisc/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -43,7 +43,7 @@ cflags-y += -mno-space-regs -mfast-indirect-calls 
# Currently we save and restore fpregs on all kernel entry/interruption paths.

# If that gets optimized, we might need to disable the use of fpregs in the

# kernel.

#cflags-y	+= -mdisable-fpregs

cflags-y	+= -mdisable-fpregs



# Without this, "ld -r" results in .text sections that are too big

# (> 0x40000) for branches to reach stubs.

arch/parisc/lib/memcpy.c

+2 −0
Original line number Diff line number Diff line
@@ -339,6 +339,7 @@ unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len) 
	pds = (double *)pcs;

	pdd = (double *)pcd;



#if 0

	/* Copy 8 doubles at a time */

	while (len >= 8*sizeof(double)) {

		register double r1, r2, r3, r4, r5, r6, r7, r8;
@@ -366,6 +367,7 @@ unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len) 
		fstdma(d_space, r8, pdd, pmc_store_exc);

		len -= 8*sizeof(double);

	}

#endif



	pws = (unsigned int *)pds;

	pwd = (unsigned int *)pdd;