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CI-CD Updates (#768)
* Use new version of CI-CD Actions * Use cSpell spell check, and use ubuntu-20.04 for formatting check * Format and spell check all files in the portable directory * Remove the https:// from #errors and #warnings as uncrustify attempts to change it to /* * Use checkout@v3 instead of checkout@v2 on all jobs ---------
This commit is contained in:
Soren Ptak
GitHub
parent
d6bccb1f4c
commit
5fb9b50da8
485 changed files with 108790 additions and 107581 deletions
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@ -42,116 +42,116 @@
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#if ( configENABLE_MPU == 1 )
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void vRestoreContextOfFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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{
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__asm volatile
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(
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" .syntax unified \n"
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" \n"
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" program_mpu_first_task: \n"
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" ldr r3, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r0, [r3] \n" /* r0 = pxCurrentTCB. */
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" \n"
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" dmb \n" /* Complete outstanding transfers before disabling MPU. */
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" ldr r1, xMPUCTRLConst2 \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
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" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
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" bic r2, #1 \n" /* r2 = r2 & ~1 i.e. Clear the bit 0 in r2. */
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" str r2, [r1] \n" /* Disable MPU. */
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" \n"
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" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to MAIR0 in TCB. */
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" ldr r1, [r0] \n" /* r1 = *r0 i.e. r1 = MAIR0. */
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" ldr r2, xMAIR0Const2 \n" /* r2 = 0xe000edc0 [Location of MAIR0]. */
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" str r1, [r2] \n" /* Program MAIR0. */
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" \n"
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" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to first RBAR in TCB. */
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" ldr r1, xRNRConst2 \n" /* r1 = 0xe000ed98 [Location of RNR]. */
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" ldr r2, xRBARConst2 \n" /* r2 = 0xe000ed9c [Location of RBAR]. */
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" \n"
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" movs r3, #4 \n" /* r3 = 4. */
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" str r3, [r1] \n" /* Program RNR = 4. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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" \n"
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#if ( configTOTAL_MPU_REGIONS == 16 )
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" movs r3, #8 \n" /* r3 = 8. */
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" str r3, [r1] \n" /* Program RNR = 8. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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" movs r3, #12 \n" /* r3 = 12. */
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" str r3, [r1] \n" /* Program RNR = 12. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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#endif /* configTOTAL_MPU_REGIONS == 16 */
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" \n"
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" ldr r1, xMPUCTRLConst2 \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
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" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
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" orr r2, #1 \n" /* r2 = r1 | 1 i.e. Set the bit 0 in r2. */
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" str r2, [r1] \n" /* Enable MPU. */
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" dsb \n" /* Force memory writes before continuing. */
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" \n"
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" restore_context_first_task: \n"
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" ldr r3, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r1, [r3] \n" /* r1 = pxCurrentTCB.*/
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" ldr r2, [r1] \n" /* r2 = Location of saved context in TCB. */
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" \n"
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" restore_special_regs_first_task: \n"
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" ldmdb r2!, {r0, r3-r5, lr} \n" /* r0 = xSecureContext, r3 = original PSP, r4 = PSPLIM, r5 = CONTROL, LR restored. */
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" msr psp, r3 \n"
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" msr psplim, r4 \n"
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" msr control, r5 \n"
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" ldr r4, xSecureContextConst2 \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
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" str r0, [r4] \n" /* Restore xSecureContext. */
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" \n"
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" restore_general_regs_first_task: \n"
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" ldmdb r2!, {r4-r11} \n" /* r4-r11 contain hardware saved context. */
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" stmia r3!, {r4-r11} \n" /* Copy the hardware saved context on the task stack. */
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" ldmdb r2!, {r4-r11} \n" /* r4-r11 restored. */
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" \n"
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" restore_context_done_first_task: \n"
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" str r2, [r1] \n" /* Save the location where the context should be saved next as the first member of TCB. */
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" mov r0, #0 \n"
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" msr basepri, r0 \n" /* Ensure that interrupts are enabled when the first task starts. */
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" bx lr \n"
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" \n"
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" .align 4 \n"
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" pxCurrentTCBConst2: .word pxCurrentTCB \n"
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" xSecureContextConst2: .word xSecureContext \n"
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" xMPUCTRLConst2: .word 0xe000ed94 \n"
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" xMAIR0Const2: .word 0xe000edc0 \n"
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" xRNRConst2: .word 0xe000ed98 \n"
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" xRBARConst2: .word 0xe000ed9c \n"
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);
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}
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void vRestoreContextOfFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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{
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__asm volatile
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(
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" .syntax unified \n"
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" \n"
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" program_mpu_first_task: \n"
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" ldr r3, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r0, [r3] \n" /* r0 = pxCurrentTCB. */
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" \n"
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" dmb \n" /* Complete outstanding transfers before disabling MPU. */
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" ldr r1, xMPUCTRLConst2 \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
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" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
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" bic r2, #1 \n" /* r2 = r2 & ~1 i.e. Clear the bit 0 in r2. */
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" str r2, [r1] \n" /* Disable MPU. */
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" \n"
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" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to MAIR0 in TCB. */
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" ldr r1, [r0] \n" /* r1 = *r0 i.e. r1 = MAIR0. */
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" ldr r2, xMAIR0Const2 \n" /* r2 = 0xe000edc0 [Location of MAIR0]. */
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" str r1, [r2] \n" /* Program MAIR0. */
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" \n"
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" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to first RBAR in TCB. */
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" ldr r1, xRNRConst2 \n" /* r1 = 0xe000ed98 [Location of RNR]. */
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" ldr r2, xRBARConst2 \n" /* r2 = 0xe000ed9c [Location of RBAR]. */
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" \n"
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" movs r3, #4 \n" /* r3 = 4. */
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" str r3, [r1] \n" /* Program RNR = 4. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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" \n"
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#if ( configTOTAL_MPU_REGIONS == 16 )
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" movs r3, #8 \n" /* r3 = 8. */
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" str r3, [r1] \n" /* Program RNR = 8. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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" movs r3, #12 \n" /* r3 = 12. */
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" str r3, [r1] \n" /* Program RNR = 12. */
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" ldmia r0!, {r4-r11} \n" /* Read 4 set of RBAR/RLAR registers from TCB. */
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" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
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#endif /* configTOTAL_MPU_REGIONS == 16 */
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" \n"
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" ldr r1, xMPUCTRLConst2 \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
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" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
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" orr r2, #1 \n" /* r2 = r1 | 1 i.e. Set the bit 0 in r2. */
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" str r2, [r1] \n" /* Enable MPU. */
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" dsb \n" /* Force memory writes before continuing. */
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" \n"
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" restore_context_first_task: \n"
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" ldr r3, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r1, [r3] \n" /* r1 = pxCurrentTCB.*/
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" ldr r2, [r1] \n" /* r2 = Location of saved context in TCB. */
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" \n"
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" restore_special_regs_first_task: \n"
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" ldmdb r2!, {r0, r3-r5, lr} \n" /* r0 = xSecureContext, r3 = original PSP, r4 = PSPLIM, r5 = CONTROL, LR restored. */
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" msr psp, r3 \n"
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" msr psplim, r4 \n"
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" msr control, r5 \n"
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" ldr r4, xSecureContextConst2 \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
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" str r0, [r4] \n" /* Restore xSecureContext. */
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" \n"
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" restore_general_regs_first_task: \n"
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" ldmdb r2!, {r4-r11} \n" /* r4-r11 contain hardware saved context. */
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" stmia r3!, {r4-r11} \n" /* Copy the hardware saved context on the task stack. */
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" ldmdb r2!, {r4-r11} \n" /* r4-r11 restored. */
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" \n"
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" restore_context_done_first_task: \n"
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" str r2, [r1] \n" /* Save the location where the context should be saved next as the first member of TCB. */
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" mov r0, #0 \n"
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" msr basepri, r0 \n" /* Ensure that interrupts are enabled when the first task starts. */
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" bx lr \n"
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" \n"
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" .align 4 \n"
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" pxCurrentTCBConst2: .word pxCurrentTCB \n"
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" xSecureContextConst2: .word xSecureContext \n"
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" xMPUCTRLConst2: .word 0xe000ed94 \n"
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" xMAIR0Const2: .word 0xe000edc0 \n"
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" xRNRConst2: .word 0xe000ed98 \n"
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" xRBARConst2: .word 0xe000ed9c \n"
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);
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}
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#else /* configENABLE_MPU */
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void vRestoreContextOfFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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{
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__asm volatile
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(
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" .syntax unified \n"
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" \n"
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" ldr r2, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r3, [r2] \n" /* Read pxCurrentTCB. */
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" ldr r0, [r3] \n" /* Read top of stack from TCB - The first item in pxCurrentTCB is the task top of stack. */
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" \n"
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" ldm r0!, {r1-r3} \n" /* Read from stack - r1 = xSecureContext, r2 = PSPLIM and r3 = EXC_RETURN. */
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" ldr r4, xSecureContextConst2 \n"
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" str r1, [r4] \n" /* Set xSecureContext to this task's value for the same. */
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" msr psplim, r2 \n" /* Set this task's PSPLIM value. */
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" movs r1, #2 \n" /* r1 = 2. */
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" msr CONTROL, r1 \n" /* Switch to use PSP in the thread mode. */
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" adds r0, #32 \n" /* Discard everything up to r0. */
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" msr psp, r0 \n" /* This is now the new top of stack to use in the task. */
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" isb \n"
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" mov r0, #0 \n"
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" msr basepri, r0 \n" /* Ensure that interrupts are enabled when the first task starts. */
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" bx r3 \n" /* Finally, branch to EXC_RETURN. */
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" .align 4 \n"
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"pxCurrentTCBConst2: .word pxCurrentTCB \n"
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"xSecureContextConst2: .word xSecureContext \n"
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);
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}
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void vRestoreContextOfFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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{
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__asm volatile
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(
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" .syntax unified \n"
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" \n"
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" ldr r2, pxCurrentTCBConst2 \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
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" ldr r3, [r2] \n" /* Read pxCurrentTCB. */
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" ldr r0, [r3] \n" /* Read top of stack from TCB - The first item in pxCurrentTCB is the task top of stack. */
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" \n"
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" ldm r0!, {r1-r3} \n" /* Read from stack - r1 = xSecureContext, r2 = PSPLIM and r3 = EXC_RETURN. */
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" ldr r4, xSecureContextConst2 \n"
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" str r1, [r4] \n" /* Set xSecureContext to this task's value for the same. */
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" msr psplim, r2 \n" /* Set this task's PSPLIM value. */
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" movs r1, #2 \n" /* r1 = 2. */
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" msr CONTROL, r1 \n" /* Switch to use PSP in the thread mode. */
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" adds r0, #32 \n" /* Discard everything up to r0. */
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" msr psp, r0 \n" /* This is now the new top of stack to use in the task. */
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" isb \n"
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" mov r0, #0 \n"
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" msr basepri, r0 \n" /* Ensure that interrupts are enabled when the first task starts. */
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" bx r3 \n" /* Finally, branch to EXC_RETURN. */
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" .align 4 \n"
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"pxCurrentTCBConst2: .word pxCurrentTCB \n"
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"xSecureContextConst2: .word xSecureContext \n"
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);
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}
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#endif /* configENABLE_MPU */
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/*-----------------------------------------------------------*/
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@ -162,12 +162,12 @@ BaseType_t xIsPrivileged( void ) /* __attribute__ (( naked )) */
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(
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" .syntax unified \n"
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" \n"
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" mrs r0, control \n"/* r0 = CONTROL. */
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" tst r0, #1 \n"/* Perform r0 & 1 (bitwise AND) and update the conditions flag. */
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" mrs r0, control \n" /* r0 = CONTROL. */
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" tst r0, #1 \n" /* Perform r0 & 1 (bitwise AND) and update the conditions flag. */
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" ite ne \n"
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" movne r0, #0 \n"/* CONTROL[0]!=0. Return false to indicate that the processor is not privileged. */
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" moveq r0, #1 \n"/* CONTROL[0]==0. Return true to indicate that the processor is privileged. */
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" bx lr \n"/* Return. */
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" movne r0, #0 \n" /* CONTROL[0]!=0. Return false to indicate that the processor is not privileged. */
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" moveq r0, #1 \n" /* CONTROL[0]==0. Return true to indicate that the processor is privileged. */
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" bx lr \n" /* Return. */
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" \n"
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" .align 4 \n"
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::: "r0", "memory"
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@ -181,10 +181,10 @@ void vRaisePrivilege( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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(
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" .syntax unified \n"
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" \n"
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" mrs r0, control \n"/* Read the CONTROL register. */
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" bic r0, #1 \n"/* Clear the bit 0. */
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" msr control, r0 \n"/* Write back the new CONTROL value. */
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" bx lr \n"/* Return to the caller. */
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" mrs r0, control \n" /* Read the CONTROL register. */
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" bic r0, #1 \n" /* Clear the bit 0. */
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" msr control, r0 \n" /* Write back the new CONTROL value. */
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" bx lr \n" /* Return to the caller. */
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::: "r0", "memory"
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);
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}
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@ -196,10 +196,10 @@ void vResetPrivilege( void ) /* __attribute__ (( naked )) */
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(
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" .syntax unified \n"
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" \n"
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" mrs r0, control \n"/* r0 = CONTROL. */
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" orr r0, #1 \n"/* r0 = r0 | 1. */
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" msr control, r0 \n"/* CONTROL = r0. */
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" bx lr \n"/* Return to the caller. */
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" mrs r0, control \n" /* r0 = CONTROL. */
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" orr r0, #1 \n" /* r0 = r0 | 1. */
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" msr control, r0 \n" /* CONTROL = r0. */
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" bx lr \n" /* Return to the caller. */
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::: "r0", "memory"
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);
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}
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@ -211,15 +211,15 @@ void vStartFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
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(
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" .syntax unified \n"
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" \n"
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" ldr r0, xVTORConst \n"/* Use the NVIC offset register to locate the stack. */
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" ldr r0, [r0] \n"/* Read the VTOR register which gives the address of vector table. */
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" ldr r0, [r0] \n"/* The first entry in vector table is stack pointer. */
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" msr msp, r0 \n"/* Set the MSP back to the start of the stack. */
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" cpsie i \n"/* Globally enable interrupts. */
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" ldr r0, xVTORConst \n" /* Use the NVIC offset register to locate the stack. */
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" ldr r0, [r0] \n" /* Read the VTOR register which gives the address of vector table. */
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" ldr r0, [r0] \n" /* The first entry in vector table is stack pointer. */
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" msr msp, r0 \n" /* Set the MSP back to the start of the stack. */
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" cpsie i \n" /* Globally enable interrupts. */
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" cpsie f \n"
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" dsb \n"
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" isb \n"
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" svc %0 \n"/* System call to start the first task. */
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" svc %0 \n" /* System call to start the first task. */
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" nop \n"
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" \n"
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" .align 4 \n"
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@ -235,12 +235,12 @@ uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCT
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(
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" .syntax unified \n"
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" \n"
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" mrs r0, basepri \n"/* r0 = basepri. Return original basepri value. */
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" mov r1, %0 \n"/* r1 = configMAX_SYSCALL_INTERRUPT_PRIORITY. */
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" msr basepri, r1 \n"/* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
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" mrs r0, basepri \n" /* r0 = basepri. Return original basepri value. */
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" mov r1, %0 \n" /* r1 = configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" msr basepri, r1 \n" /* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bx lr \n"/* Return. */
|
||||
" bx lr \n" /* Return. */
|
||||
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : "memory"
|
||||
);
|
||||
}
|
||||
|
|
@ -252,10 +252,10 @@ void vClearInterruptMask( __attribute__( ( unused ) ) uint32_t ulMask ) /* __att
|
|||
(
|
||||
" .syntax unified \n"
|
||||
" \n"
|
||||
" msr basepri, r0 \n"/* basepri = ulMask. */
|
||||
" msr basepri, r0 \n" /* basepri = ulMask. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bx lr \n"/* Return. */
|
||||
" bx lr \n" /* Return. */
|
||||
::: "memory"
|
||||
);
|
||||
}
|
||||
|
|
@ -263,320 +263,320 @@ void vClearInterruptMask( __attribute__( ( unused ) ) uint32_t ulMask ) /* __att
|
|||
|
||||
#if ( configENABLE_MPU == 1 )
|
||||
|
||||
void PendSV_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" .extern SecureContext_SaveContext \n"
|
||||
" .extern SecureContext_LoadContext \n"
|
||||
" \n"
|
||||
" ldr r3, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" ldr r0, [r3] \n" /* Read xSecureContext - Value of xSecureContext must be in r0 as it is used as a parameter later. */
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB - Value of pxCurrentTCB must be in r1 as it is used as a parameter later. */
|
||||
" ldr r2, [r1] \n" /* r2 = Location in TCB where the context should be saved. */
|
||||
" \n"
|
||||
" cbz r0, save_ns_context \n" /* No secure context to save. */
|
||||
" save_s_context: \n"
|
||||
" push {r0-r2, lr} \n"
|
||||
" bl SecureContext_SaveContext \n" /* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r0-r2, lr} \n"
|
||||
" \n"
|
||||
" save_ns_context: \n"
|
||||
" mov r3, lr \n" /* r3 = LR (EXC_RETURN). */
|
||||
" lsls r3, r3, #25 \n" /* r3 = r3 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bmi save_special_regs \n" /* r3 < 0 ==> Bit[6] in EXC_RETURN is 1 ==> secure stack was used to store the stack frame. */
|
||||
" \n"
|
||||
" save_general_regs: \n"
|
||||
" mrs r3, psp \n"
|
||||
" \n"
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" add r3, r3, #0x20 \n" /* Move r3 to location where s0 is saved. */
|
||||
" tst lr, #0x10 \n"
|
||||
" ittt eq \n"
|
||||
" vstmiaeq r2!, {s16-s31} \n" /* Store s16-s31. */
|
||||
" vldmiaeq r3, {s0-s16} \n" /* Copy hardware saved FP context into s0-s16. */
|
||||
" vstmiaeq r2!, {s0-s16} \n" /* Store hardware saved FP context. */
|
||||
" sub r3, r3, #0x20 \n" /* Set r3 back to the location of hardware saved context. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" \n"
|
||||
" stmia r2!, {r4-r11} \n" /* Store r4-r11. */
|
||||
" ldmia r3, {r4-r11} \n" /* Copy the hardware saved context into r4-r11. */
|
||||
" stmia r2!, {r4-r11} \n" /* Store the hardware saved context. */
|
||||
" \n"
|
||||
" save_special_regs: \n"
|
||||
" mrs r3, psp \n" /* r3 = PSP. */
|
||||
" mrs r4, psplim \n" /* r4 = PSPLIM. */
|
||||
" mrs r5, control \n" /* r5 = CONTROL. */
|
||||
" stmia r2!, {r0, r3-r5, lr} \n" /* Store xSecureContext, original PSP (after hardware has saved context), PSPLIM, CONTROL and LR. */
|
||||
" str r2, [r1] \n" /* Save the location from where the context should be restored as the first member of TCB. */
|
||||
" \n"
|
||||
" select_next_task: \n"
|
||||
" mov r0, %0 \n" /* r0 = configMAX_SYSCALL_INTERRUPT_PRIORITY */
|
||||
" msr basepri, r0 \n" /* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bl vTaskSwitchContext \n"
|
||||
" mov r0, #0 \n" /* r0 = 0. */
|
||||
" msr basepri, r0 \n" /* Enable interrupts. */
|
||||
" \n"
|
||||
" program_mpu: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r0, [r3] \n" /* r0 = pxCurrentTCB.*/
|
||||
" \n"
|
||||
" dmb \n" /* Complete outstanding transfers before disabling MPU. */
|
||||
" ldr r1, xMPUCTRLConst \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
|
||||
" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
|
||||
" bic r2, #1 \n" /* r2 = r2 & ~1 i.e. Clear the bit 0 in r2. */
|
||||
" str r2, [r1] \n" /* Disable MPU. */
|
||||
" \n"
|
||||
" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to MAIR0 in TCB. */
|
||||
" ldr r1, [r0] \n" /* r1 = *r0 i.e. r1 = MAIR0. */
|
||||
" ldr r2, xMAIR0Const \n" /* r2 = 0xe000edc0 [Location of MAIR0]. */
|
||||
" str r1, [r2] \n" /* Program MAIR0. */
|
||||
" \n"
|
||||
" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to first RBAR in TCB. */
|
||||
" ldr r1, xRNRConst \n" /* r1 = 0xe000ed98 [Location of RNR]. */
|
||||
" ldr r2, xRBARConst \n" /* r2 = 0xe000ed9c [Location of RBAR]. */
|
||||
" \n"
|
||||
" movs r3, #4 \n" /* r3 = 4. */
|
||||
" str r3, [r1] \n" /* Program RNR = 4. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
" \n"
|
||||
#if ( configTOTAL_MPU_REGIONS == 16 )
|
||||
" movs r3, #8 \n" /* r3 = 8. */
|
||||
" str r3, [r1] \n" /* Program RNR = 8. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
" movs r3, #12 \n" /* r3 = 12. */
|
||||
" str r3, [r1] \n" /* Program RNR = 12. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
#endif /* configTOTAL_MPU_REGIONS == 16 */
|
||||
" \n"
|
||||
" ldr r1, xMPUCTRLConst \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
|
||||
" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
|
||||
" orr r2, #1 \n" /* r2 = r2 | 1 i.e. Set the bit 0 in r2. */
|
||||
" str r2, [r1] \n" /* Enable MPU. */
|
||||
" dsb \n" /* Force memory writes before continuing. */
|
||||
" \n"
|
||||
" restore_context: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* r1 = pxCurrentTCB.*/
|
||||
" ldr r2, [r1] \n" /* r2 = Location of saved context in TCB. */
|
||||
" \n"
|
||||
" restore_special_regs: \n"
|
||||
" ldmdb r2!, {r0, r3-r5, lr} \n" /* r0 = xSecureContext, r3 = original PSP, r4 = PSPLIM, r5 = CONTROL, LR restored. */
|
||||
" msr psp, r3 \n"
|
||||
" msr psplim, r4 \n"
|
||||
" msr control, r5 \n"
|
||||
" ldr r4, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" str r0, [r4] \n" /* Restore xSecureContext. */
|
||||
" cbz r0, restore_ns_context \n" /* No secure context to restore. */
|
||||
" \n"
|
||||
" restore_s_context: \n"
|
||||
" push {r1-r3, lr} \n"
|
||||
" bl SecureContext_LoadContext \n" /* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r1-r3, lr} \n"
|
||||
" \n"
|
||||
" restore_ns_context: \n"
|
||||
" mov r0, lr \n" /* r0 = LR (EXC_RETURN). */
|
||||
" lsls r0, r0, #25 \n" /* r0 = r0 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bmi restore_context_done \n" /* r0 < 0 ==> Bit[6] in EXC_RETURN is 1 ==> secure stack was used to store the stack frame. */
|
||||
" \n"
|
||||
" restore_general_regs: \n"
|
||||
" ldmdb r2!, {r4-r11} \n" /* r4-r11 contain hardware saved context. */
|
||||
" stmia r3!, {r4-r11} \n" /* Copy the hardware saved context on the task stack. */
|
||||
" ldmdb r2!, {r4-r11} \n" /* r4-r11 restored. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n"
|
||||
" ittt eq \n"
|
||||
" vldmdbeq r2!, {s0-s16} \n" /* s0-s16 contain hardware saved FP context. */
|
||||
" vstmiaeq r3!, {s0-s16} \n" /* Copy hardware saved FP context on the task stack. */
|
||||
" vldmdbeq r2!, {s16-s31} \n" /* Restore s16-s31. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" \n"
|
||||
" restore_context_done: \n"
|
||||
" str r2, [r1] \n" /* Save the location where the context should be saved next as the first member of TCB. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
" pxCurrentTCBConst: .word pxCurrentTCB \n"
|
||||
" xSecureContextConst: .word xSecureContext \n"
|
||||
" xMPUCTRLConst: .word 0xe000ed94 \n"
|
||||
" xMAIR0Const: .word 0xe000edc0 \n"
|
||||
" xRNRConst: .word 0xe000ed98 \n"
|
||||
" xRBARConst: .word 0xe000ed9c \n"
|
||||
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
|
||||
);
|
||||
}
|
||||
void PendSV_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" .extern SecureContext_SaveContext \n"
|
||||
" .extern SecureContext_LoadContext \n"
|
||||
" \n"
|
||||
" ldr r3, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" ldr r0, [r3] \n" /* Read xSecureContext - Value of xSecureContext must be in r0 as it is used as a parameter later. */
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB - Value of pxCurrentTCB must be in r1 as it is used as a parameter later. */
|
||||
" ldr r2, [r1] \n" /* r2 = Location in TCB where the context should be saved. */
|
||||
" \n"
|
||||
" cbz r0, save_ns_context \n" /* No secure context to save. */
|
||||
" save_s_context: \n"
|
||||
" push {r0-r2, lr} \n"
|
||||
" bl SecureContext_SaveContext \n" /* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r0-r2, lr} \n"
|
||||
" \n"
|
||||
" save_ns_context: \n"
|
||||
" mov r3, lr \n" /* r3 = LR (EXC_RETURN). */
|
||||
" lsls r3, r3, #25 \n" /* r3 = r3 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bmi save_special_regs \n" /* r3 < 0 ==> Bit[6] in EXC_RETURN is 1 ==> secure stack was used to store the stack frame. */
|
||||
" \n"
|
||||
" save_general_regs: \n"
|
||||
" mrs r3, psp \n"
|
||||
" \n"
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" add r3, r3, #0x20 \n" /* Move r3 to location where s0 is saved. */
|
||||
" tst lr, #0x10 \n"
|
||||
" ittt eq \n"
|
||||
" vstmiaeq r2!, {s16-s31} \n" /* Store s16-s31. */
|
||||
" vldmiaeq r3, {s0-s16} \n" /* Copy hardware saved FP context into s0-s16. */
|
||||
" vstmiaeq r2!, {s0-s16} \n" /* Store hardware saved FP context. */
|
||||
" sub r3, r3, #0x20 \n" /* Set r3 back to the location of hardware saved context. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" \n"
|
||||
" stmia r2!, {r4-r11} \n" /* Store r4-r11. */
|
||||
" ldmia r3, {r4-r11} \n" /* Copy the hardware saved context into r4-r11. */
|
||||
" stmia r2!, {r4-r11} \n" /* Store the hardware saved context. */
|
||||
" \n"
|
||||
" save_special_regs: \n"
|
||||
" mrs r3, psp \n" /* r3 = PSP. */
|
||||
" mrs r4, psplim \n" /* r4 = PSPLIM. */
|
||||
" mrs r5, control \n" /* r5 = CONTROL. */
|
||||
" stmia r2!, {r0, r3-r5, lr} \n" /* Store xSecureContext, original PSP (after hardware has saved context), PSPLIM, CONTROL and LR. */
|
||||
" str r2, [r1] \n" /* Save the location from where the context should be restored as the first member of TCB. */
|
||||
" \n"
|
||||
" select_next_task: \n"
|
||||
" mov r0, %0 \n" /* r0 = configMAX_SYSCALL_INTERRUPT_PRIORITY */
|
||||
" msr basepri, r0 \n" /* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bl vTaskSwitchContext \n"
|
||||
" mov r0, #0 \n" /* r0 = 0. */
|
||||
" msr basepri, r0 \n" /* Enable interrupts. */
|
||||
" \n"
|
||||
" program_mpu: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r0, [r3] \n" /* r0 = pxCurrentTCB.*/
|
||||
" \n"
|
||||
" dmb \n" /* Complete outstanding transfers before disabling MPU. */
|
||||
" ldr r1, xMPUCTRLConst \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
|
||||
" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
|
||||
" bic r2, #1 \n" /* r2 = r2 & ~1 i.e. Clear the bit 0 in r2. */
|
||||
" str r2, [r1] \n" /* Disable MPU. */
|
||||
" \n"
|
||||
" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to MAIR0 in TCB. */
|
||||
" ldr r1, [r0] \n" /* r1 = *r0 i.e. r1 = MAIR0. */
|
||||
" ldr r2, xMAIR0Const \n" /* r2 = 0xe000edc0 [Location of MAIR0]. */
|
||||
" str r1, [r2] \n" /* Program MAIR0. */
|
||||
" \n"
|
||||
" adds r0, #4 \n" /* r0 = r0 + 4. r0 now points to first RBAR in TCB. */
|
||||
" ldr r1, xRNRConst \n" /* r1 = 0xe000ed98 [Location of RNR]. */
|
||||
" ldr r2, xRBARConst \n" /* r2 = 0xe000ed9c [Location of RBAR]. */
|
||||
" \n"
|
||||
" movs r3, #4 \n" /* r3 = 4. */
|
||||
" str r3, [r1] \n" /* Program RNR = 4. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
" \n"
|
||||
#if ( configTOTAL_MPU_REGIONS == 16 )
|
||||
" movs r3, #8 \n" /* r3 = 8. */
|
||||
" str r3, [r1] \n" /* Program RNR = 8. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
" movs r3, #12 \n" /* r3 = 12. */
|
||||
" str r3, [r1] \n" /* Program RNR = 12. */
|
||||
" ldmia r0!, {r4-r11} \n" /* Read 4 sets of RBAR/RLAR registers from TCB. */
|
||||
" stmia r2, {r4-r11} \n" /* Write 4 set of RBAR/RLAR registers using alias registers. */
|
||||
#endif /* configTOTAL_MPU_REGIONS == 16 */
|
||||
" \n"
|
||||
" ldr r1, xMPUCTRLConst \n" /* r1 = 0xe000ed94 [Location of MPU_CTRL]. */
|
||||
" ldr r2, [r1] \n" /* Read the value of MPU_CTRL. */
|
||||
" orr r2, #1 \n" /* r2 = r2 | 1 i.e. Set the bit 0 in r2. */
|
||||
" str r2, [r1] \n" /* Enable MPU. */
|
||||
" dsb \n" /* Force memory writes before continuing. */
|
||||
" \n"
|
||||
" restore_context: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* r1 = pxCurrentTCB.*/
|
||||
" ldr r2, [r1] \n" /* r2 = Location of saved context in TCB. */
|
||||
" \n"
|
||||
" restore_special_regs: \n"
|
||||
" ldmdb r2!, {r0, r3-r5, lr} \n" /* r0 = xSecureContext, r3 = original PSP, r4 = PSPLIM, r5 = CONTROL, LR restored. */
|
||||
" msr psp, r3 \n"
|
||||
" msr psplim, r4 \n"
|
||||
" msr control, r5 \n"
|
||||
" ldr r4, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" str r0, [r4] \n" /* Restore xSecureContext. */
|
||||
" cbz r0, restore_ns_context \n" /* No secure context to restore. */
|
||||
" \n"
|
||||
" restore_s_context: \n"
|
||||
" push {r1-r3, lr} \n"
|
||||
" bl SecureContext_LoadContext \n" /* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r1-r3, lr} \n"
|
||||
" \n"
|
||||
" restore_ns_context: \n"
|
||||
" mov r0, lr \n" /* r0 = LR (EXC_RETURN). */
|
||||
" lsls r0, r0, #25 \n" /* r0 = r0 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bmi restore_context_done \n" /* r0 < 0 ==> Bit[6] in EXC_RETURN is 1 ==> secure stack was used to store the stack frame. */
|
||||
" \n"
|
||||
" restore_general_regs: \n"
|
||||
" ldmdb r2!, {r4-r11} \n" /* r4-r11 contain hardware saved context. */
|
||||
" stmia r3!, {r4-r11} \n" /* Copy the hardware saved context on the task stack. */
|
||||
" ldmdb r2!, {r4-r11} \n" /* r4-r11 restored. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n"
|
||||
" ittt eq \n"
|
||||
" vldmdbeq r2!, {s0-s16} \n" /* s0-s16 contain hardware saved FP context. */
|
||||
" vstmiaeq r3!, {s0-s16} \n" /* Copy hardware saved FP context on the task stack. */
|
||||
" vldmdbeq r2!, {s16-s31} \n" /* Restore s16-s31. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" \n"
|
||||
" restore_context_done: \n"
|
||||
" str r2, [r1] \n" /* Save the location where the context should be saved next as the first member of TCB. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
" pxCurrentTCBConst: .word pxCurrentTCB \n"
|
||||
" xSecureContextConst: .word xSecureContext \n"
|
||||
" xMPUCTRLConst: .word 0xe000ed94 \n"
|
||||
" xMAIR0Const: .word 0xe000edc0 \n"
|
||||
" xRNRConst: .word 0xe000ed98 \n"
|
||||
" xRBARConst: .word 0xe000ed9c \n"
|
||||
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
|
||||
);
|
||||
}
|
||||
|
||||
#else /* configENABLE_MPU */
|
||||
|
||||
void PendSV_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" .extern SecureContext_SaveContext \n"
|
||||
" .extern SecureContext_LoadContext \n"
|
||||
" \n"
|
||||
" ldr r3, xSecureContextConst \n"/* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" ldr r0, [r3] \n"/* Read xSecureContext - Value of xSecureContext must be in r0 as it is used as a parameter later. */
|
||||
" ldr r3, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n"/* Read pxCurrentTCB - Value of pxCurrentTCB must be in r1 as it is used as a parameter later. */
|
||||
" mrs r2, psp \n"/* Read PSP in r2. */
|
||||
" \n"
|
||||
" cbz r0, save_ns_context \n"/* No secure context to save. */
|
||||
" push {r0-r2, r14} \n"
|
||||
" bl SecureContext_SaveContext \n"/* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r0-r3} \n"/* LR is now in r3. */
|
||||
" mov lr, r3 \n"/* LR = r3. */
|
||||
" lsls r1, r3, #25 \n"/* r1 = r3 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bpl save_ns_context \n"/* bpl - branch if positive or zero. If r1 >= 0 ==> Bit[6] in EXC_RETURN is 0 i.e. non-secure stack was used. */
|
||||
" \n"
|
||||
" ldr r3, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n"/* Read pxCurrentTCB.*/
|
||||
" subs r2, r2, #12 \n"/* Make space for xSecureContext, PSPLIM and LR on the stack. */
|
||||
" str r2, [r1] \n"/* Save the new top of stack in TCB. */
|
||||
" mrs r1, psplim \n"/* r1 = PSPLIM. */
|
||||
" mov r3, lr \n"/* r3 = LR/EXC_RETURN. */
|
||||
" stmia r2!, {r0, r1, r3} \n"/* Store xSecureContext, PSPLIM and LR on the stack. */
|
||||
" b select_next_task \n"
|
||||
" \n"
|
||||
" save_ns_context: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n"/* Read pxCurrentTCB. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n"/* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the Extended Stack Frame is in use. */
|
||||
" it eq \n"
|
||||
" vstmdbeq r2!, {s16-s31} \n"/* Store the additional FP context registers which are not saved automatically. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" subs r2, r2, #44 \n"/* Make space for xSecureContext, PSPLIM, LR and the remaining registers on the stack. */
|
||||
" str r2, [r1] \n"/* Save the new top of stack in TCB. */
|
||||
" adds r2, r2, #12 \n"/* r2 = r2 + 12. */
|
||||
" stm r2, {r4-r11} \n"/* Store the registers that are not saved automatically. */
|
||||
" mrs r1, psplim \n"/* r1 = PSPLIM. */
|
||||
" mov r3, lr \n"/* r3 = LR/EXC_RETURN. */
|
||||
" subs r2, r2, #12 \n"/* r2 = r2 - 12. */
|
||||
" stmia r2!, {r0, r1, r3} \n"/* Store xSecureContext, PSPLIM and LR on the stack. */
|
||||
" \n"
|
||||
" select_next_task: \n"
|
||||
" mov r0, %0 \n"/* r0 = configMAX_SYSCALL_INTERRUPT_PRIORITY */
|
||||
" msr basepri, r0 \n"/* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bl vTaskSwitchContext \n"
|
||||
" mov r0, #0 \n"/* r0 = 0. */
|
||||
" msr basepri, r0 \n"/* Enable interrupts. */
|
||||
" \n"
|
||||
" ldr r3, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n"/* Read pxCurrentTCB. */
|
||||
" ldr r2, [r1] \n"/* The first item in pxCurrentTCB is the task top of stack. r2 now points to the top of stack. */
|
||||
" \n"
|
||||
" ldmia r2!, {r0, r1, r4} \n"/* Read from stack - r0 = xSecureContext, r1 = PSPLIM and r4 = LR. */
|
||||
" msr psplim, r1 \n"/* Restore the PSPLIM register value for the task. */
|
||||
" mov lr, r4 \n"/* LR = r4. */
|
||||
" ldr r3, xSecureContextConst \n"/* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" str r0, [r3] \n"/* Restore the task's xSecureContext. */
|
||||
" cbz r0, restore_ns_context \n"/* If there is no secure context for the task, restore the non-secure context. */
|
||||
" ldr r3, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n"/* Read pxCurrentTCB. */
|
||||
" push {r2, r4} \n"
|
||||
" bl SecureContext_LoadContext \n"/* Restore the secure context. Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r2, r4} \n"
|
||||
" mov lr, r4 \n"/* LR = r4. */
|
||||
" lsls r1, r4, #25 \n"/* r1 = r4 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bpl restore_ns_context \n"/* bpl - branch if positive or zero. If r1 >= 0 ==> Bit[6] in EXC_RETURN is 0 i.e. non-secure stack was used. */
|
||||
" msr psp, r2 \n"/* Remember the new top of stack for the task. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" restore_ns_context: \n"
|
||||
" ldmia r2!, {r4-r11} \n"/* Restore the registers that are not automatically restored. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n"/* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the Extended Stack Frame is in use. */
|
||||
" it eq \n"
|
||||
" vldmiaeq r2!, {s16-s31} \n"/* Restore the additional FP context registers which are not restored automatically. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" msr psp, r2 \n"/* Remember the new top of stack for the task. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
"pxCurrentTCBConst: .word pxCurrentTCB \n"
|
||||
"xSecureContextConst: .word xSecureContext \n"
|
||||
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
|
||||
);
|
||||
}
|
||||
void PendSV_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" .extern SecureContext_SaveContext \n"
|
||||
" .extern SecureContext_LoadContext \n"
|
||||
" \n"
|
||||
" ldr r3, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" ldr r0, [r3] \n" /* Read xSecureContext - Value of xSecureContext must be in r0 as it is used as a parameter later. */
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB - Value of pxCurrentTCB must be in r1 as it is used as a parameter later. */
|
||||
" mrs r2, psp \n" /* Read PSP in r2. */
|
||||
" \n"
|
||||
" cbz r0, save_ns_context \n" /* No secure context to save. */
|
||||
" push {r0-r2, r14} \n"
|
||||
" bl SecureContext_SaveContext \n" /* Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r0-r3} \n" /* LR is now in r3. */
|
||||
" mov lr, r3 \n" /* LR = r3. */
|
||||
" lsls r1, r3, #25 \n" /* r1 = r3 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bpl save_ns_context \n" /* bpl - branch if positive or zero. If r1 >= 0 ==> Bit[6] in EXC_RETURN is 0 i.e. non-secure stack was used. */
|
||||
" \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB.*/
|
||||
" subs r2, r2, #12 \n" /* Make space for xSecureContext, PSPLIM and LR on the stack. */
|
||||
" str r2, [r1] \n" /* Save the new top of stack in TCB. */
|
||||
" mrs r1, psplim \n" /* r1 = PSPLIM. */
|
||||
" mov r3, lr \n" /* r3 = LR/EXC_RETURN. */
|
||||
" stmia r2!, {r0, r1, r3} \n" /* Store xSecureContext, PSPLIM and LR on the stack. */
|
||||
" b select_next_task \n"
|
||||
" \n"
|
||||
" save_ns_context: \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n" /* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the Extended Stack Frame is in use. */
|
||||
" it eq \n"
|
||||
" vstmdbeq r2!, {s16-s31} \n" /* Store the additional FP context registers which are not saved automatically. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" subs r2, r2, #44 \n" /* Make space for xSecureContext, PSPLIM, LR and the remaining registers on the stack. */
|
||||
" str r2, [r1] \n" /* Save the new top of stack in TCB. */
|
||||
" adds r2, r2, #12 \n" /* r2 = r2 + 12. */
|
||||
" stm r2, {r4-r11} \n" /* Store the registers that are not saved automatically. */
|
||||
" mrs r1, psplim \n" /* r1 = PSPLIM. */
|
||||
" mov r3, lr \n" /* r3 = LR/EXC_RETURN. */
|
||||
" subs r2, r2, #12 \n" /* r2 = r2 - 12. */
|
||||
" stmia r2!, {r0, r1, r3} \n" /* Store xSecureContext, PSPLIM and LR on the stack. */
|
||||
" \n"
|
||||
" select_next_task: \n"
|
||||
" mov r0, %0 \n" /* r0 = configMAX_SYSCALL_INTERRUPT_PRIORITY */
|
||||
" msr basepri, r0 \n" /* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
|
||||
" dsb \n"
|
||||
" isb \n"
|
||||
" bl vTaskSwitchContext \n"
|
||||
" mov r0, #0 \n" /* r0 = 0. */
|
||||
" msr basepri, r0 \n" /* Enable interrupts. */
|
||||
" \n"
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB. */
|
||||
" ldr r2, [r1] \n" /* The first item in pxCurrentTCB is the task top of stack. r2 now points to the top of stack. */
|
||||
" \n"
|
||||
" ldmia r2!, {r0, r1, r4} \n" /* Read from stack - r0 = xSecureContext, r1 = PSPLIM and r4 = LR. */
|
||||
" msr psplim, r1 \n" /* Restore the PSPLIM register value for the task. */
|
||||
" mov lr, r4 \n" /* LR = r4. */
|
||||
" ldr r3, xSecureContextConst \n" /* Read the location of xSecureContext i.e. &( xSecureContext ). */
|
||||
" str r0, [r3] \n" /* Restore the task's xSecureContext. */
|
||||
" cbz r0, restore_ns_context \n" /* If there is no secure context for the task, restore the non-secure context. */
|
||||
" ldr r3, pxCurrentTCBConst \n" /* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
|
||||
" ldr r1, [r3] \n" /* Read pxCurrentTCB. */
|
||||
" push {r2, r4} \n"
|
||||
" bl SecureContext_LoadContext \n" /* Restore the secure context. Params are in r0 and r1. r0 = xSecureContext and r1 = pxCurrentTCB. */
|
||||
" pop {r2, r4} \n"
|
||||
" mov lr, r4 \n" /* LR = r4. */
|
||||
" lsls r1, r4, #25 \n" /* r1 = r4 << 25. Bit[6] of EXC_RETURN is 1 if secure stack was used, 0 if non-secure stack was used to store stack frame. */
|
||||
" bpl restore_ns_context \n" /* bpl - branch if positive or zero. If r1 >= 0 ==> Bit[6] in EXC_RETURN is 0 i.e. non-secure stack was used. */
|
||||
" msr psp, r2 \n" /* Remember the new top of stack for the task. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" restore_ns_context: \n"
|
||||
" ldmia r2!, {r4-r11} \n" /* Restore the registers that are not automatically restored. */
|
||||
#if ( ( configENABLE_FPU == 1 ) || ( configENABLE_MVE == 1 ) )
|
||||
" tst lr, #0x10 \n" /* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the Extended Stack Frame is in use. */
|
||||
" it eq \n"
|
||||
" vldmiaeq r2!, {s16-s31} \n" /* Restore the additional FP context registers which are not restored automatically. */
|
||||
#endif /* configENABLE_FPU || configENABLE_MVE */
|
||||
" msr psp, r2 \n" /* Remember the new top of stack for the task. */
|
||||
" bx lr \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
"pxCurrentTCBConst: .word pxCurrentTCB \n"
|
||||
"xSecureContextConst: .word xSecureContext \n"
|
||||
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
|
||||
);
|
||||
}
|
||||
|
||||
#endif /* configENABLE_MPU */
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
#if ( ( configENABLE_MPU == 1 ) && ( configUSE_MPU_WRAPPERS_V1 == 0 ) )
|
||||
|
||||
void SVC_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
".syntax unified \n"
|
||||
".extern vPortSVCHandler_C \n"
|
||||
".extern vSystemCallEnter \n"
|
||||
".extern vSystemCallEnter_1 \n"
|
||||
".extern vSystemCallExit \n"
|
||||
" \n"
|
||||
"tst lr, #4 \n"
|
||||
"ite eq \n"
|
||||
"mrseq r0, msp \n"
|
||||
"mrsne r0, psp \n"
|
||||
" \n"
|
||||
"ldr r1, [r0, #24] \n"
|
||||
"ldrb r2, [r1, #-2] \n"
|
||||
"cmp r2, %0 \n"
|
||||
"beq syscall_enter \n"
|
||||
"cmp r2, %1 \n"
|
||||
"beq syscall_enter_1 \n"
|
||||
"cmp r2, %2 \n"
|
||||
"beq syscall_exit \n"
|
||||
"b vPortSVCHandler_C \n"
|
||||
" \n"
|
||||
"syscall_enter: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallEnter \n"
|
||||
" \n"
|
||||
"syscall_enter_1: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallEnter_1 \n"
|
||||
" \n"
|
||||
"syscall_exit: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallExit \n"
|
||||
" \n"
|
||||
: /* No outputs. */
|
||||
:"i" ( portSVC_SYSTEM_CALL_ENTER ), "i" ( portSVC_SYSTEM_CALL_ENTER_1 ), "i" ( portSVC_SYSTEM_CALL_EXIT )
|
||||
: "r0", "r1", "r2", "memory"
|
||||
);
|
||||
}
|
||||
void SVC_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
".syntax unified \n"
|
||||
".extern vPortSVCHandler_C \n"
|
||||
".extern vSystemCallEnter \n"
|
||||
".extern vSystemCallEnter_1 \n"
|
||||
".extern vSystemCallExit \n"
|
||||
" \n"
|
||||
"tst lr, #4 \n"
|
||||
"ite eq \n"
|
||||
"mrseq r0, msp \n"
|
||||
"mrsne r0, psp \n"
|
||||
" \n"
|
||||
"ldr r1, [r0, #24] \n"
|
||||
"ldrb r2, [r1, #-2] \n"
|
||||
"cmp r2, %0 \n"
|
||||
"beq syscall_enter \n"
|
||||
"cmp r2, %1 \n"
|
||||
"beq syscall_enter_1 \n"
|
||||
"cmp r2, %2 \n"
|
||||
"beq syscall_exit \n"
|
||||
"b vPortSVCHandler_C \n"
|
||||
" \n"
|
||||
"syscall_enter: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallEnter \n"
|
||||
" \n"
|
||||
"syscall_enter_1: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallEnter_1 \n"
|
||||
" \n"
|
||||
"syscall_exit: \n"
|
||||
" mov r1, lr \n"
|
||||
" b vSystemCallExit \n"
|
||||
" \n"
|
||||
: /* No outputs. */
|
||||
: "i" ( portSVC_SYSTEM_CALL_ENTER ), "i" ( portSVC_SYSTEM_CALL_ENTER_1 ), "i" ( portSVC_SYSTEM_CALL_EXIT )
|
||||
: "r0", "r1", "r2", "memory"
|
||||
);
|
||||
}
|
||||
|
||||
#else /* ( configENABLE_MPU == 1 ) && ( configUSE_MPU_WRAPPERS_V1 == 0 ) */
|
||||
|
||||
void SVC_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" \n"
|
||||
" tst lr, #4 \n"
|
||||
" ite eq \n"
|
||||
" mrseq r0, msp \n"
|
||||
" mrsne r0, psp \n"
|
||||
" ldr r1, svchandler_address_const \n"
|
||||
" bx r1 \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
"svchandler_address_const: .word vPortSVCHandler_C \n"
|
||||
);
|
||||
}
|
||||
void SVC_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
|
||||
{
|
||||
__asm volatile
|
||||
(
|
||||
" .syntax unified \n"
|
||||
" \n"
|
||||
" tst lr, #4 \n"
|
||||
" ite eq \n"
|
||||
" mrseq r0, msp \n"
|
||||
" mrsne r0, psp \n"
|
||||
" ldr r1, svchandler_address_const \n"
|
||||
" bx r1 \n"
|
||||
" \n"
|
||||
" .align 4 \n"
|
||||
"svchandler_address_const: .word vPortSVCHandler_C \n"
|
||||
);
|
||||
}
|
||||
|
||||
#endif /* ( configENABLE_MPU == 1 ) && ( configUSE_MPU_WRAPPERS_V1 == 0 ) */
|
||||
/*-----------------------------------------------------------*/
|
||||
|
|
@ -587,8 +587,8 @@ void vPortAllocateSecureContext( uint32_t ulSecureStackSize ) /* __attribute__ (
|
|||
(
|
||||
" .syntax unified \n"
|
||||
" \n"
|
||||
" svc %0 \n"/* Secure context is allocated in the supervisor call. */
|
||||
" bx lr \n"/* Return. */
|
||||
" svc %0 \n" /* Secure context is allocated in the supervisor call. */
|
||||
" bx lr \n" /* Return. */
|
||||
::"i" ( portSVC_ALLOCATE_SECURE_CONTEXT ) : "memory"
|
||||
);
|
||||
}
|
||||
|
|
@ -600,12 +600,12 @@ void vPortFreeSecureContext( uint32_t * pulTCB ) /* __attribute__ (( naked )) PR
|
|||
(
|
||||
" .syntax unified \n"
|
||||
" \n"
|
||||
" ldr r2, [r0] \n"/* The first item in the TCB is the top of the stack. */
|
||||
" ldr r1, [r2] \n"/* The first item on the stack is the task's xSecureContext. */
|
||||
" cmp r1, #0 \n"/* Raise svc if task's xSecureContext is not NULL. */
|
||||
" ldr r2, [r0] \n" /* The first item in the TCB is the top of the stack. */
|
||||
" ldr r1, [r2] \n" /* The first item on the stack is the task's xSecureContext. */
|
||||
" cmp r1, #0 \n" /* Raise svc if task's xSecureContext is not NULL. */
|
||||
" it ne \n"
|
||||
" svcne %0 \n"/* Secure context is freed in the supervisor call. */
|
||||
" bx lr \n"/* Return. */
|
||||
" svcne %0 \n" /* Secure context is freed in the supervisor call. */
|
||||
" bx lr \n" /* Return. */
|
||||
::"i" ( portSVC_FREE_SECURE_CONTEXT ) : "memory"
|
||||
);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue