RXv3コアのレジスタ一括退避機能を使ってマルチスーパーループ実行ライブラリ(MultiSuperLoopExecLibrary)を作ってみるスレッド

こんにちは。NoMaYです。

今、以下のスレッドに投稿しているのですけれども、派生ネタが思い浮かびましたので、またひとつ立ててみました。

RXv3コアのレジスタ一括退避機能の使い方(Register Bank Save Function Usage)を調べてみるスレッド
community-ja.renesas.com/cafe_rene/forums-groups/mcu-mpu/rx/f/forum5/9572/rxv3-register-bank-save-function-usage

派生ネタ

・スーパーループを複数同時実行する(複数のスーパーループを切り替えながら実行する)、という、ありがちなものです
・ RXv3コアのレジスタ一括退避機能の高速性を鑑みて10μsec程度で切り替えてみたいです
・お遊びです

Parents

NoMaY over 1 year ago

派生元のスレッドの小細工マクロを使ってRXスマートコンフィグレータのCGコンポーネントのユーザ記述部にコードを押し込む案が思い浮かびました。(レジスタ一括退避バンクを1つとクロックを1クロックを無駄に使いますけれども。)

ソース:

/* Start user code for include. Do not edit comment generated here */

#include "r_rx_nested_interrupt/r_rx_nested_interrupt.h"

/* End user code. Do not edit comment generated here */

/* Start user code for global. Do not edit comment generated here */

uint8_t SuperLoopCurrentContextId = 0;

#pragma inline_asm MultiSuperLoop_Dispatch
static void MultiSuperLoop_Dispatch(void)
{
    /* Re-enable interrupt. */
    setpsw i

    /* Save the current super loop context. Be aware that the USP is used from now. */
    /* (As of today, the DPFPU registers are neither saved nor restored.) */
    setpsw u
    sub #8, sp
    push.l r1
    mov.l #_SuperLoopCurrentContextId, r1
    mov.b [r1], r1
    save r1

    /* Move PSW, PC from the interrupt stack to the current super loop's user stack. */
    mvfc isp, r2
    mov.l 4[r2], 8[sp]
    mov.l 0[r2], 4[sp]
    add #8, r2
    mvtc r2, isp

    /* Select the next super loop. */
    add #1, r1
    and #1, r1
    mov.l #_SuperLoopCurrentContextId, r2
    mov.b r1, [r2]

    /* Restore the next super loop context. Be aware that the USP is used here. */
    /* (As of today, the DPFPU registers are neither saved nor restored.) */
    rstr r1
    pop r1
    rte
}

#define r_Config_CMT3_cmi3_interrupt(...) R_CG_ATTRIB_INTERRUPT_BANK(r_Config_CMT3_cmi3_interrupt, MY_BSP_CFG_REG_BANK_SCRATCH, __VA_ARGS__)

/* End user code. Do not edit comment generated here */

#if FAST_INTERRUPT_VECTOR == VECT_PERIB_INTB129
#pragma interrupt r_Config_CMT3_cmi3_interrupt(vect=VECT(PERIB,INTB129),fint)
#else
#pragma interrupt r_Config_CMT3_cmi3_interrupt(vect=VECT(PERIB,INTB129))
#endif
static void r_Config_CMT3_cmi3_interrupt(void)
{
    /* Start user code for r_Config_CMT3_cmi3_interrupt. Do not edit comment generated here */

    MultiSuperLoop_Dispatch();

    /* End user code. Do not edit comment generated here */
}

　
リスト:

00000001                         __$r_Config_CMT3_cmi3_interrupt:
                                        .STACK  __$r_Config_CMT3_cmi3_interrupt=8
                                        .RVECTOR    129,__$r_Config_CMT3_cmi3_interrupt
00000001 FD76E00F                       SAVE #0FH ← ここは無駄ですけれども
                                        ._LINE_TOP  inline_asm
00000005 7FA8                        setpsw i
00000007 7FA9                        setpsw u
00000009 6080                        sub #8, sp
0000000B 7EA1                        push.l r1
0000000D FB12rrrrrrrr                mov.l #_SuperLoopCurrentContextId, r1
00000013 CC11                        mov.b [r1], r1
00000015 FD76C100                    save r1
00000019 FD6AA2                      mvfc isp, r2
0000001C E5200102                    mov.l 4[r2], 8[sp]
00000020 E5200001                    mov.l 0[r2], 4[sp]
00000024 6282                        add #8, r2
00000026 FD682A                      mvtc r2, isp
00000029 6211                        add #1, r1
0000002B 6411                        and #1, r1
0000002D FB22rrrrrrrr                mov.l #_SuperLoopCurrentContextId, r2
00000033 C321                        mov.b r1, [r2]
00000035 FD76D100                    rstr r1
00000039 7EB1                        pop r1
0000003B 7F95                        rte
                                        ._LINE_END  inline_asm
0000003D FD76F00F                       RSTR #0FH ← ここは実行されません
00000041 7F95                           RTE ← ここは実行されません

Reply

NoMaY over 1 year ago

/* Start user code for include. Do not edit comment generated here */

#include "r_rx_nested_interrupt/r_rx_nested_interrupt.h"

/* End user code. Do not edit comment generated here */

/* Start user code for global. Do not edit comment generated here */

uint8_t SuperLoopCurrentContextId = 0;

#pragma inline_asm MultiSuperLoop_Dispatch
static void MultiSuperLoop_Dispatch(void)
{
    /* Re-enable interrupt. */
    setpsw i

    /* Save the current super loop context. Be aware that the USP is used from now. */
    /* (As of today, the DPFPU registers are neither saved nor restored.) */
    setpsw u
    sub #8, sp
    push.l r1
    mov.l #_SuperLoopCurrentContextId, r1
    mov.b [r1], r1
    save r1

    /* Move PSW, PC from the interrupt stack to the current super loop's user stack. */
    mvfc isp, r2
    mov.l 4[r2], 8[sp]
    mov.l 0[r2], 4[sp]
    add #8, r2
    mvtc r2, isp

    /* Select the next super loop. */
    add #1, r1
    and #1, r1
    mov.l #_SuperLoopCurrentContextId, r2
    mov.b r1, [r2]

    /* Restore the next super loop context. Be aware that the USP is used here. */
    /* (As of today, the DPFPU registers are neither saved nor restored.) */
    rstr r1
    pop r1
    rte
}

#define r_Config_CMT3_cmi3_interrupt(...) R_CG_ATTRIB_INTERRUPT_BANK(r_Config_CMT3_cmi3_interrupt, MY_BSP_CFG_REG_BANK_SCRATCH, __VA_ARGS__)

/* End user code. Do not edit comment generated here */

#if FAST_INTERRUPT_VECTOR == VECT_PERIB_INTB129
#pragma interrupt r_Config_CMT3_cmi3_interrupt(vect=VECT(PERIB,INTB129),fint)
#else
#pragma interrupt r_Config_CMT3_cmi3_interrupt(vect=VECT(PERIB,INTB129))
#endif
static void r_Config_CMT3_cmi3_interrupt(void)
{
    /* Start user code for r_Config_CMT3_cmi3_interrupt. Do not edit comment generated here */

    MultiSuperLoop_Dispatch();

    /* End user code. Do not edit comment generated here */
}

　
リスト:

00000001                         __$r_Config_CMT3_cmi3_interrupt:
                                        .STACK  __$r_Config_CMT3_cmi3_interrupt=8
                                        .RVECTOR    129,__$r_Config_CMT3_cmi3_interrupt
00000001 FD76E00F                       SAVE #0FH ← ここは無駄ですけれども
                                        ._LINE_TOP  inline_asm
00000005 7FA8                        setpsw i
00000007 7FA9                        setpsw u
00000009 6080                        sub #8, sp
0000000B 7EA1                        push.l r1
0000000D FB12rrrrrrrr                mov.l #_SuperLoopCurrentContextId, r1
00000013 CC11                        mov.b [r1], r1
00000015 FD76C100                    save r1
00000019 FD6AA2                      mvfc isp, r2
0000001C E5200102                    mov.l 4[r2], 8[sp]
00000020 E5200001                    mov.l 0[r2], 4[sp]
00000024 6282                        add #8, r2
00000026 FD682A                      mvtc r2, isp
00000029 6211                        add #1, r1
0000002B 6411                        and #1, r1
0000002D FB22rrrrrrrr                mov.l #_SuperLoopCurrentContextId, r2
00000033 C321                        mov.b r1, [r2]
00000035 FD76D100                    rstr r1
00000039 7EB1                        pop r1
0000003B 7F95                        rte
                                        ._LINE_END  inline_asm
0000003D FD76F00F                       RSTR #0FH ← ここは実行されません
00000041 7F95                           RTE ← ここは実行されません

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