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CONFIG_ISA_ARM
¶
(No prompt – not directly user assignable.)
Type: bool
Help¶
From: https://developer.arm.com/products/architecture/instruction-sets/a32-and-t32-instruction-sets
A32 instructions, known as Arm instructions in pre-Armv8 architectures, are 32 bits wide, and are aligned on 4-byte boundaries. A32 instructions are supported by both A-profile and R-profile architectures.
A32 was traditionally used in applications requiring the highest performance, or for handling hardware exceptions such as interrupts and processor start-up. Much of its functionality was subsumed into T32 with the introduction of Thumb-2 technology.
Defaults¶
No defaults. Implicitly defaults to n
.
Kconfig definition¶
At <Zephyr>/arch/arm/core/aarch32/Kconfig:62
Included via <Zephyr>/Kconfig:8
→ <Zephyr>/Kconfig.zephyr:29
→ <Zephyr>/arch/Kconfig:12
→ <Zephyr>/arch/arm/Kconfig:42
Menu path: (Top) → ARM Options
config ISA_ARM bool depends on !ARM64
&&ARM
help From: https://developer.arm.com/products/architecture/instruction-sets/a32-and-t32-instruction-sets A32 instructions, known as Arm instructions in pre-Armv8 architectures, are 32 bits wide, and are aligned on 4-byte boundaries. A32 instructions are supported by both A-profile and R-profile architectures. A32 was traditionally used in applications requiring the highest performance, or for handling hardware exceptions such as interrupts and processor start-up. Much of its functionality was subsumed into T32 with the introduction of Thumb-2 technology.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)