8f34c2760d
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp: Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem. sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately. sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades. sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for fastboot. Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
84 lines
2.4 KiB
ArmAsm
84 lines
2.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#include <asm/export.h>
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#include <asm/asm.h>
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/*
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* unsigned int __sw_hweight32(unsigned int w)
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* %rdi: w
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*/
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SYM_FUNC_START(__sw_hweight32)
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#ifdef CONFIG_X86_64
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movl %edi, %eax # w
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#endif
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__ASM_SIZE(push,) %__ASM_REG(dx)
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movl %eax, %edx # w -> t
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shrl %edx # t >>= 1
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andl $0x55555555, %edx # t &= 0x55555555
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subl %edx, %eax # w -= t
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movl %eax, %edx # w -> t
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shrl $2, %eax # w_tmp >>= 2
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andl $0x33333333, %edx # t &= 0x33333333
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andl $0x33333333, %eax # w_tmp &= 0x33333333
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addl %edx, %eax # w = w_tmp + t
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movl %eax, %edx # w -> t
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shrl $4, %edx # t >>= 4
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addl %edx, %eax # w_tmp += t
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andl $0x0f0f0f0f, %eax # w_tmp &= 0x0f0f0f0f
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imull $0x01010101, %eax, %eax # w_tmp *= 0x01010101
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shrl $24, %eax # w = w_tmp >> 24
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__ASM_SIZE(pop,) %__ASM_REG(dx)
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RET
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SYM_FUNC_END(__sw_hweight32)
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EXPORT_SYMBOL(__sw_hweight32)
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SYM_FUNC_START(__sw_hweight64)
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#ifdef CONFIG_X86_64
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pushq %rdi
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pushq %rdx
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movq %rdi, %rdx # w -> t
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movabsq $0x5555555555555555, %rax
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shrq %rdx # t >>= 1
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andq %rdx, %rax # t &= 0x5555555555555555
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movabsq $0x3333333333333333, %rdx
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subq %rax, %rdi # w -= t
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movq %rdi, %rax # w -> t
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shrq $2, %rdi # w_tmp >>= 2
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andq %rdx, %rax # t &= 0x3333333333333333
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andq %rdi, %rdx # w_tmp &= 0x3333333333333333
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addq %rdx, %rax # w = w_tmp + t
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movq %rax, %rdx # w -> t
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shrq $4, %rdx # t >>= 4
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addq %rdx, %rax # w_tmp += t
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movabsq $0x0f0f0f0f0f0f0f0f, %rdx
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andq %rdx, %rax # w_tmp &= 0x0f0f0f0f0f0f0f0f
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movabsq $0x0101010101010101, %rdx
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imulq %rdx, %rax # w_tmp *= 0x0101010101010101
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shrq $56, %rax # w = w_tmp >> 56
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popq %rdx
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popq %rdi
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RET
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#else /* CONFIG_X86_32 */
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/* We're getting an u64 arg in (%eax,%edx): unsigned long hweight64(__u64 w) */
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pushl %ecx
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call __sw_hweight32
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movl %eax, %ecx # stash away result
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movl %edx, %eax # second part of input
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call __sw_hweight32
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addl %ecx, %eax # result
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popl %ecx
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RET
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#endif
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SYM_FUNC_END(__sw_hweight64)
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EXPORT_SYMBOL(__sw_hweight64)
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