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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /arch/microblaze/lib/modsi3.S
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
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Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'arch/microblaze/lib/modsi3.S')
-rw-r--r--arch/microblaze/lib/modsi3.S74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/microblaze/lib/modsi3.S b/arch/microblaze/lib/modsi3.S
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+++ b/arch/microblaze/lib/modsi3.S
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+
+/*
+* modulo operation for 32 bit integers.
+* Input : op1 in Reg r5
+* op2 in Reg r6
+* Output: op1 mod op2 in Reg r3
+*/
+
+ .text
+ .globl __modsi3
+ .type __modsi3, @function
+ .ent __modsi3
+
+__modsi3:
+ .frame r1, 0, r15
+
+ addik r1, r1, -16
+ swi r28, r1, 0
+ swi r29, r1, 4
+ swi r30, r1, 8
+ swi r31, r1, 12
+
+ beqi r6, div_by_zero /* div_by_zero division error */
+ beqi r5, result_is_zero /* result is zero */
+ bgeid r5, r5_pos
+ /* get the sign of the result [ depends only on the first arg] */
+ add r28, r5, r0
+ rsubi r5, r5, 0 /* make r5 positive */
+r5_pos:
+ bgei r6, r6_pos
+ rsubi r6, r6, 0 /* make r6 positive */
+r6_pos:
+ addik r3, r0, 0 /* clear mod */
+ addik r30, r0, 0 /* clear div */
+ addik r29, r0, 32 /* initialize the loop count */
+/* first part try to find the first '1' in the r5 */
+div1:
+ add r5, r5, r5 /* left shift logical r5 */
+ bgeid r5, div1
+ addik r29, r29, -1
+div2:
+ /* left shift logical r5 get the '1' into the carry */
+ add r5, r5, r5
+ addc r3, r3, r3 /* move that bit into the mod register */
+ rsub r31, r6, r3 /* try to subtract (r30 a r6) */
+ blti r31, mod_too_small
+ /* move the r31 to mod since the result was positive */
+ or r3, r0, r31
+ addik r30, r30, 1
+mod_too_small:
+ addik r29, r29, -1
+ beqi r29, loop_end
+ add r30, r30, r30 /* shift in the '1' into div */
+ bri div2 /* div2 */
+loop_end:
+ bgei r28, return_here
+ brid return_here
+ rsubi r3, r3, 0 /* negate the result */
+div_by_zero:
+result_is_zero:
+ or r3, r0, r0 /* set result to 0 [both mod as well as div are 0] */
+return_here:
+/* restore values of csrs and that of r3 and the divisor and the dividend */
+ lwi r28, r1, 0
+ lwi r29, r1, 4
+ lwi r30, r1, 8
+ lwi r31, r1, 12
+ rtsd r15, 8
+ addik r1, r1, 16
+
+.size __modsi3, . - __modsi3
+.end __modsi3