diff options
Diffstat (limited to 'ports/rxv3/iar/src/tx_thread_context_save.s')
| -rw-r--r-- | ports/rxv3/iar/src/tx_thread_context_save.s | 96 |
1 files changed, 42 insertions, 54 deletions
diff --git a/ports/rxv3/iar/src/tx_thread_context_save.s b/ports/rxv3/iar/src/tx_thread_context_save.s index f6128347..91ac51a1 100644 --- a/ports/rxv3/iar/src/tx_thread_context_save.s +++ b/ports/rxv3/iar/src/tx_thread_context_save.s @@ -1,18 +1,18 @@ ;/*************************************************************************** -; * Copyright (c) 2024 Microsoft Corporation -; * +; * Copyright (c) 2024 Microsoft Corporation +; * ; * 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 */ ;/** */ @@ -33,51 +33,39 @@ extern __tx_thread_current_ptr section .text:CODE:ROOT -;/**************************************************************************/ -;/* */ -;/* FUNCTION RELEASE */ -;/* */ +;/**************************************************************************/ +;/* */ +;/* FUNCTION RELEASE */ +;/* */ ;/* _tx_thread_context_save RXv3/IAR */ ;/* 6.1.11 */ -;/* AUTHOR */ -;/* */ +;/* AUTHOR */ +;/* */ ;/* William E. Lamie, Microsoft Corporation */ -;/* */ -;/* 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 */ -;/* */ -;/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */ -;/* 10-15-2021 William E. Lamie Modified comment(s), */ -;/* resulting in version 6.1.9 */ -;/* 01-31-2022 William E. Lamie Modified comment(s), */ -;/* resulting in version 6.1.10 */ -;/* 04-25-2022 William E. Lamie Modified comment(s), */ -;/* resulting in version 6.1.11 */ -;/* */ -;/**************************************************************************/ +;/* */ +;/* 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 @@ -104,7 +92,7 @@ __tx_thread_context_save: BEQ __tx_thread_not_nested_save ; ; /* Nested interrupt condition. */ -; +; ADD #1, r2 ; _tx_thread_system_state++ MOV.L r2, [r1] @@ -130,7 +118,7 @@ __tx_thread_not_nested_save: MOV.L #__tx_thread_current_ptr, R2 ; Pickup current thread pointer MOV.L [R2], R2 - CMP #0,R2 ; Is it NULL? + CMP #0,R2 ; Is it NULL? BEQ __tx_thread_idle_system_save ; Yes, idle system is running - idle restore ; ; /* Move stack frame over to the current threads stack. */ @@ -142,9 +130,9 @@ __tx_thread_not_nested_save: MOV.L 12[R0], R2 MOV.L R2, [-R1] ; Save PC on thread stack MOV.L 8[R0], R2 - MOV.L R2, [-R1] ; Save R2 on thread stack + MOV.L R2, [-R1] ; Save R2 on thread stack MOV.L 4[R0], R2 - MOV.L R2, [-R1] ; Save R1 on thread stack + MOV.L R2, [-R1] ; Save R1 on thread stack MOV.L R5, [-R1] ; Save R5 on thread stack MOV.L R4, [-R1] ; Save R4 on thread stack MOV.L R3, [-R1] ; Save R3 on thread stack @@ -152,9 +140,9 @@ __tx_thread_not_nested_save: MOV.L R14, [-R1] ; Save R14 on thread stack MVFC FPSW, R3 MOV.L R3, [-R1] ; Save FPSW on thread stack - + POP R2 ; Pick up return address from interrupt stack - ADD #16, R0, R0 ; Correct interrupt stack pointer back to the bottom + ADD #16, R0, R0 ; Correct interrupt stack pointer back to the bottom MVTC R1, USP ; Set user/thread stack pointer JMP R2 ; Return to ISR @@ -171,6 +159,6 @@ __tx_thread_idle_system_save: JMP R1 ; Return to caller ; ; } -;} +;} END |