mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-07 01:15:20 +00:00
80a0d9d16b
The set of interrupt stacks is now expressed as an array. We also define the idle threads and their associated stacks this way. This allows for iteration in cases where we have multiple CPUs. There is now a centralized declaration in kernel_internal.h. On uniprocessor systems, z_interrupt_stacks has one element and can be used in the same way as _interrupt_stack. The IRQ stack for CPU 0 is now set in init.c instead of in arch code. The extern definition of the main thread stack is now removed, this doesn't need to be in a header. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
61 lines
1.2 KiB
ArmAsm
61 lines
1.2 KiB
ArmAsm
/*
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* Copyright (c) 2013-2014 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <toolchain.h>
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#include <linker/sections.h>
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#include <arch/cpu.h>
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#include <offsets_short.h>
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_ASM_FILE_PROLOGUE
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GDATA(z_interrupt_stacks)
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GTEXT(z_do_software_reboot)
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SECTION_FUNC(TEXT,z_do_software_reboot)
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eors r0, r0
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/* move exception table back to 0 */
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ldr r1, =0xe000e000
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str r0, [r1, #0xd08] /* VTOR */
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ldr r0, [r0, #4]
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bx r0
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GTEXT(z_force_exit_one_nested_irq)
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SECTION_FUNC(TEXT,z_force_exit_one_nested_irq)
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ldr r0, =_SCS_ICSR_RETTOBASE
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ldr r1, =_SCS_ICSR
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ldr r1, [r1]
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ands.w r0, r1
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/*
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* If Z flag is set, we are nested, so un-nest one level and get
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* back to this function to unwind the next level; else, exit the
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* last interrupt by jumping to reboot code.
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*/
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ittee eq
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ldreq lr, =0xfffffff1
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ldreq r2, =z_force_exit_one_nested_irq
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ldrne lr, =0xfffffffd
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ldrne r2, =z_do_software_reboot
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ldr ip, =z_interrupt_stacks
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add.w ip, ip, #(___esf_t_SIZEOF * 2) /* enough for a stack frame */
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ldr r1, =0xfffffffe
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and.w r2, r1
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str r2, [ip, #(6 * 4)]
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ldr r2, =0x01000000
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str r2, [ip, #(7 * 4)]
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ite eq
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moveq sp, ip
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msrne PSP, ip
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bx lr
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