diff options
Diffstat (limited to 'ports/risc-v32/iar/src/tx_thread_context_save.s')
| -rw-r--r-- | ports/risc-v32/iar/src/tx_thread_context_save.s | 89 |
1 files changed, 41 insertions, 48 deletions
diff --git a/ports/risc-v32/iar/src/tx_thread_context_save.s b/ports/risc-v32/iar/src/tx_thread_context_save.s index c4b0f273..00b971ef 100644 --- a/ports/risc-v32/iar/src/tx_thread_context_save.s +++ b/ports/risc-v32/iar/src/tx_thread_context_save.s @@ -1,18 +1,19 @@ /*************************************************************************** - * Copyright (c) 2024 Microsoft Corporation - * + * Copyright (c) 2024 Microsoft Corporation + * Copyright (c) 2026-present Eclipse ThreadX contributors + * * This program and the accompanying materials are made available under the * terms of the MIT License which is available at * https://opensource.org/licenses/MIT. - * + * * SPDX-License-Identifier: MIT **************************************************************************/ /**************************************************************************/ /**************************************************************************/ -/** */ -/** ThreadX Component */ +/** */ +/** ThreadX Component */ /** */ /** Thread */ /** */ @@ -39,46 +40,39 @@ SECTION `.text`:CODE:REORDER:NOROOT(2) CODE -/**************************************************************************/ -/* */ -/* FUNCTION RELEASE */ -/* */ +/**************************************************************************/ +/* */ +/* FUNCTION RELEASE */ +/* */ /* _tx_thread_context_save RISC-V32/IAR */ /* 6.1 */ -/* AUTHOR */ -/* */ -/* William E. Lamie, Microsoft Corporation */ +/* AUTHOR */ +/* */ +/* William E. Lamie, Microsoft Corporation */ /* Tom van Leeuwen, Technolution B.V. */ -/* */ -/* DESCRIPTION */ -/* */ -/* This function saves the context of an executing thread in the */ -/* beginning of interrupt processing. The function also ensures that */ -/* the system stack is used upon return to the calling ISR. */ -/* */ -/* INPUT */ -/* */ -/* None */ -/* */ -/* OUTPUT */ -/* */ -/* None */ -/* */ -/* CALLS */ -/* */ -/* None */ -/* */ -/* CALLED BY */ -/* */ -/* ISRs */ -/* */ -/* RELEASE HISTORY */ -/* */ -/* DATE NAME DESCRIPTION */ -/* */ -/* 09-30-2020 William E. Lamie Initial Version 6.1 */ -/* */ -/**************************************************************************/ +/* */ +/* DESCRIPTION */ +/* */ +/* This function saves the context of an executing thread in the */ +/* beginning of interrupt processing. The function also ensures that */ +/* the system stack is used upon return to the calling ISR. */ +/* */ +/* INPUT */ +/* */ +/* None */ +/* */ +/* OUTPUT */ +/* */ +/* None */ +/* */ +/* CALLS */ +/* */ +/* None */ +/* */ +/* CALLED BY */ +/* */ +/* ISRs */ +/**************************************************************************/ /* VOID _tx_thread_context_save(VOID) { */ PUBLIC _tx_thread_context_save @@ -122,10 +116,10 @@ _tx_thread_context_save: csrr t0, mepc ; Load exception program counter sw t0, 0x78(sp) ; Save it on the stack -#if __iar_riscv_base_isa == rv32e +#if __iar_riscv_base_isa == rv32e /* Save floating point scratch registers. */ - + fsw f0, 0x7C(sp) ; Store ft0 fsw f1, 0x80(sp) ; Store ft1 fsw f2, 0x84(sp) ; Store ft2 @@ -154,7 +148,7 @@ _tx_thread_context_save: call _tx_execution_isr_enter ; Call the ISR execution enter function #endif - ret ; Return to calling ISR + ret ; Return to calling ISR _tx_thread_not_nested_save: /* } */ @@ -190,7 +184,7 @@ _tx_thread_not_nested_save: csrr t0, mepc ; Load exception program counter sw t0, 0x78(sp) ; Save it on the stack -#if __iar_riscv_base_isa == rv32e +#if __iar_riscv_base_isa == rv32e /* Save floating point scratch registers. */ @@ -251,7 +245,7 @@ _tx_thread_idle_system_save: /* } } */ -#if __iar_riscv_base_isa == rv32e +#if __iar_riscv_base_isa == rv32e addi sp, sp, 260 ; Recover stack frame - with floating point enabled #else addi sp, sp, 128 ; Recover the reserved stack space @@ -259,4 +253,3 @@ _tx_thread_idle_system_save: ret ; Return to calling ISR END -
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