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Commit 1031a3a5 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Provide an __sdivsi3_2 export for sh64. 



Newer code paths that are heavier in 64-bit math manage to get this
generated by newer compilers, provide a definition and export
accordingly. This is trivially wrapped around the existing __sdivsi3
code.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 2bcfffa4

arch/sh/kernel/sh_ksyms_64.c

+2 −0
Original line number Diff line number Diff line
@@ -76,5 +76,7 @@ EXPORT_SYMBOL(strcpy); 
#define DECLARE_EXPORT(name) extern void name(void);EXPORT_SYMBOL(name)



DECLARE_EXPORT(__sdivsi3);

DECLARE_EXPORT(__sdivsi3_1);

DECLARE_EXPORT(__sdivsi3_2);

DECLARE_EXPORT(__udivsi3);

DECLARE_EXPORT(__div_table);

arch/sh/lib64/sdivsi3.S

+5 −1
Original line number Diff line number Diff line 
	.global	__sdivsi3

	.global	__sdivsi3_1

	.global	__sdivsi3_2

	.section	.text..SHmedia32,"ax"

	.align	2
@@ -6,13 +8,15 @@ 
	/* clobbered: r1,r18,r19,r20,r21,r25,tr0 */

	/* result in r0 */

__sdivsi3:

__sdivsi3_1:

	ptb __div_table,tr0

	gettr tr0,r20



__sdivsi3_2:

	nsb r5, r1

	shlld r5, r1, r25    /* normalize; [-2 ..1, 1..2) in s2.62 */

	shari r25, 58, r21   /* extract 5(6) bit index (s2.4 with hole -1..1) */

	/* bubble */

	gettr tr0,r20

	ldx.ub r20, r21, r19 /* u0.8 */

	shari r25, 32, r25   /* normalize to s2.30 */

	shlli r21, 1, r21