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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /arch/hexagon/lib/memset.S | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
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/hexagon/lib/memset.S')
| -rw-r--r-- | arch/hexagon/lib/memset.S | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/arch/hexagon/lib/memset.S b/arch/hexagon/lib/memset.S new file mode 100644 index 000000000..e67304e3f --- /dev/null +++ b/arch/hexagon/lib/memset.S @@ -0,0 +1,302 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2011, The Linux Foundation. All rights reserved. + */ + + +/* HEXAGON assembly optimized memset */ +/* Replaces the standard library function memset */ + + + .macro HEXAGON_OPT_FUNC_BEGIN name + .text + .p2align 4 + .globl \name + .type \name, @function +\name: + .endm + + .macro HEXAGON_OPT_FUNC_FINISH name + .size \name, . - \name + .endm + +/* FUNCTION: memset (v2 version) */ +#if __HEXAGON_ARCH__ < 3 +HEXAGON_OPT_FUNC_BEGIN memset + { + r6 = #8 + r7 = extractu(r0, #3 , #0) + p0 = cmp.eq(r2, #0) + p1 = cmp.gtu(r2, #7) + } + { + r4 = vsplatb(r1) + r8 = r0 /* leave r0 intact for return val */ + r9 = sub(r6, r7) /* bytes until double alignment */ + if p0 jumpr r31 /* count == 0, so return */ + } + { + r3 = #0 + r7 = #0 + p0 = tstbit(r9, #0) + if p1 jump 2f /* skip byte loop */ + } + +/* less than 8 bytes to set, so just set a byte at a time and return */ + + loop0(1f, r2) /* byte loop */ + .falign +1: /* byte loop */ + { + memb(r8++#1) = r4 + }:endloop0 + jumpr r31 + .falign +2: /* skip byte loop */ + { + r6 = #1 + p0 = tstbit(r9, #1) + p1 = cmp.eq(r2, #1) + if !p0 jump 3f /* skip initial byte store */ + } + { + memb(r8++#1) = r4 + r3:2 = sub(r3:2, r7:6) + if p1 jumpr r31 + } + .falign +3: /* skip initial byte store */ + { + r6 = #2 + p0 = tstbit(r9, #2) + p1 = cmp.eq(r2, #2) + if !p0 jump 4f /* skip initial half store */ + } + { + memh(r8++#2) = r4 + r3:2 = sub(r3:2, r7:6) + if p1 jumpr r31 + } + .falign +4: /* skip initial half store */ + { + r6 = #4 + p0 = cmp.gtu(r2, #7) + p1 = cmp.eq(r2, #4) + if !p0 jump 5f /* skip initial word store */ + } + { + memw(r8++#4) = r4 + r3:2 = sub(r3:2, r7:6) + p0 = cmp.gtu(r2, #11) + if p1 jumpr r31 + } + .falign +5: /* skip initial word store */ + { + r10 = lsr(r2, #3) + p1 = cmp.eq(r3, #1) + if !p0 jump 7f /* skip double loop */ + } + { + r5 = r4 + r6 = #8 + loop0(6f, r10) /* double loop */ + } + +/* set bytes a double word at a time */ + + .falign +6: /* double loop */ + { + memd(r8++#8) = r5:4 + r3:2 = sub(r3:2, r7:6) + p1 = cmp.eq(r2, #8) + }:endloop0 + .falign +7: /* skip double loop */ + { + p0 = tstbit(r2, #2) + if p1 jumpr r31 + } + { + r6 = #4 + p0 = tstbit(r2, #1) + p1 = cmp.eq(r2, #4) + if !p0 jump 8f /* skip final word store */ + } + { + memw(r8++#4) = r4 + r3:2 = sub(r3:2, r7:6) + if p1 jumpr r31 + } + .falign +8: /* skip final word store */ + { + p1 = cmp.eq(r2, #2) + if !p0 jump 9f /* skip final half store */ + } + { + memh(r8++#2) = r4 + if p1 jumpr r31 + } + .falign +9: /* skip final half store */ + { + memb(r8++#1) = r4 + jumpr r31 + } +HEXAGON_OPT_FUNC_FINISH memset +#endif + + +/* FUNCTION: memset (v3 and higher version) */ +#if __HEXAGON_ARCH__ >= 3 +HEXAGON_OPT_FUNC_BEGIN memset + { + r7=vsplatb(r1) + r6 = r0 + if (r2==#0) jump:nt .L1 + } + { + r5:4=combine(r7,r7) + p0 = cmp.gtu(r2,#8) + if (p0.new) jump:nt .L3 + } + { + r3 = r0 + loop0(.L47,r2) + } + .falign +.L47: + { + memb(r3++#1) = r1 + }:endloop0 /* start=.L47 */ + jumpr r31 +.L3: + { + p0 = tstbit(r0,#0) + if (!p0.new) jump:nt .L8 + p1 = cmp.eq(r2, #1) + } + { + r6 = add(r0, #1) + r2 = add(r2,#-1) + memb(r0) = r1 + if (p1) jump .L1 + } +.L8: + { + p0 = tstbit(r6,#1) + if (!p0.new) jump:nt .L10 + } + { + r2 = add(r2,#-2) + memh(r6++#2) = r7 + p0 = cmp.eq(r2, #2) + if (p0.new) jump:nt .L1 + } +.L10: + { + p0 = tstbit(r6,#2) + if (!p0.new) jump:nt .L12 + } + { + r2 = add(r2,#-4) + memw(r6++#4) = r7 + p0 = cmp.eq(r2, #4) + if (p0.new) jump:nt .L1 + } +.L12: + { + p0 = cmp.gtu(r2,#127) + if (!p0.new) jump:nt .L14 + } + r3 = and(r6,#31) + if (r3==#0) jump:nt .L17 + { + memd(r6++#8) = r5:4 + r2 = add(r2,#-8) + } + r3 = and(r6,#31) + if (r3==#0) jump:nt .L17 + { + memd(r6++#8) = r5:4 + r2 = add(r2,#-8) + } + r3 = and(r6,#31) + if (r3==#0) jump:nt .L17 + { + memd(r6++#8) = r5:4 + r2 = add(r2,#-8) + } +.L17: + { + r3 = lsr(r2,#5) + if (r1!=#0) jump:nt .L18 + } + { + r8 = r3 + r3 = r6 + loop0(.L46,r3) + } + .falign +.L46: + { + dczeroa(r6) + r6 = add(r6,#32) + r2 = add(r2,#-32) + }:endloop0 /* start=.L46 */ +.L14: + { + p0 = cmp.gtu(r2,#7) + if (!p0.new) jump:nt .L28 + r8 = lsr(r2,#3) + } + loop0(.L44,r8) + .falign +.L44: + { + memd(r6++#8) = r5:4 + r2 = add(r2,#-8) + }:endloop0 /* start=.L44 */ +.L28: + { + p0 = tstbit(r2,#2) + if (!p0.new) jump:nt .L33 + } + { + r2 = add(r2,#-4) + memw(r6++#4) = r7 + } +.L33: + { + p0 = tstbit(r2,#1) + if (!p0.new) jump:nt .L35 + } + { + r2 = add(r2,#-2) + memh(r6++#2) = r7 + } +.L35: + p0 = cmp.eq(r2,#1) + if (p0) memb(r6) = r1 +.L1: + jumpr r31 +.L18: + loop0(.L45,r3) + .falign +.L45: + dczeroa(r6) + { + memd(r6++#8) = r5:4 + r2 = add(r2,#-32) + } + memd(r6++#8) = r5:4 + memd(r6++#8) = r5:4 + { + memd(r6++#8) = r5:4 + }:endloop0 /* start=.L45 */ + jump .L14 +HEXAGON_OPT_FUNC_FINISH memset +#endif |
