Recent questions tagged arm

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arm - Peak FLOPs per cycle for ARM11 and Cortex-A7 cores in Raspberry Pi 1 and 2

I would like to know the peak FLOPs per cycle for the ARM1176JZF-S core in the the Raspberry Pi 1 and ... 32-bit floats every other cycle. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - What predefined macro can I use to detect the target architecture in Clang?

I would like to write code depending on whether the target architecture is e.g. armv7, armv7s, or arm64. ... (seemingly) still reports arm64. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - Buildroot package management

I'm using buildroot to create a rootfs running on my ARM platform. I'd like to have a package manager on ... or where to find such informations? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - Linux Clock Architecture

In Linux how is the Clock Architecture implemented. There is a file include/linux/clkdev.h struct clk_lookup { struct ... /Board***/... ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - How does linux kernel wake idle processor up when new task created?

I'm newbie on Linux Kernel. Currently, I looked into idle codes and had a quesition. When processor doesn't have ... Please show me the truth :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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587 views

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arm - valgrind on the ARM9?

I see that valgrind has an ARM7 target, but I find conflicting information on whether valgrind has support for the ... build it?". Thanks -z See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - U-Boot hangs while loading kernel?

I am working on Freescale board imx50evk. I have built the uboot.bin and uImage using LTIB (linux target image ... OK Loading Kernel Image ... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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591 views

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arm - Trying to load position independent code on cortex-m3

I have an embedded application which will have a bootloader which will decide to run 1 of two applications directly from ... but I am not sure. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arm - What does 'bank'ing a register mean?

Reading 'ARM Architecture' on Wikipedia and found the following statement: Registers R0-R7 are the same across all ... banking a register mean? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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570 views

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arm - How to run a C program with no OS on the Raspberry Pi?

I'd like to experiment using the Raspberry Pi for some different low level embedded applications. The only problem is ... (USB, Ethernet, etc.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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657 views

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arm - what is the current execution mode/exception level, etc?

I am new to ARMv8 architecture. I have following basic questions on my mind: How do I know what is the ... /IRQ/FIQ exception handler. TIA. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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467 views

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arm - What is the difference between ELF files and bin files?

The final images produced by compliers contain both bin file and extended loader format ELf file ,what is the ... the utility of ELF file. See Question&Answers more detail:os...