diff options
Diffstat (limited to 'ports_module/cortex_m3/gnu')
7 files changed, 75 insertions, 17 deletions
diff --git a/ports_module/cortex_m3/gnu/example_build/build_threadx_module_sample.bat b/ports_module/cortex_m3/gnu/example_build/build_threadx_module_sample.bat index a25f370b..db4672d4 100644 --- a/ports_module/cortex_m3/gnu/example_build/build_threadx_module_sample.bat +++ b/ports_module/cortex_m3/gnu/example_build/build_threadx_module_sample.bat @@ -1,5 +1,5 @@ arm-none-eabi-gcc -c -g -mcpu=cortex-m3 -fpie -fno-plt -mno-pic-data-is-text-relative -msingle-pic-base txm_module_preamble.s arm-none-eabi-gcc -c -g -mcpu=cortex-m3 -fpie -fno-plt -mno-pic-data-is-text-relative -msingle-pic-base gcc_setup.S arm-none-eabi-gcc -c -g -mcpu=cortex-m3 -fpie -fno-plt -mno-pic-data-is-text-relative -msingle-pic-base -I..\inc -I..\..\..\..\common\inc -I..\..\..\..\common_modules\inc sample_threadx_module.c -arm-none-eabi-ld -A cortex-m3 -T sample_threadx_module.ld txm_module_preamble.o gcc_setup.o sample_threadx_module.o -e _txm_module_thread_shell_entry txm.a -o sample_threadx_module.axf -M > sample_threadx_module.map +arm-none-eabi-ld -A cortex-m3 -T sample_threadx_module.ld -pie --no-dynamic-linker txm_module_preamble.o gcc_setup.o sample_threadx_module.o -e _txm_module_thread_shell_entry txm.a -o sample_threadx_module.axf -M > sample_threadx_module.map diff --git a/ports_module/cortex_m3/gnu/example_build/gcc_setup.s b/ports_module/cortex_m3/gnu/example_build/gcc_setup.s index 4a729ffe..80ccb19b 100644 --- a/ports_module/cortex_m3/gnu/example_build/gcc_setup.s +++ b/ports_module/cortex_m3/gnu/example_build/gcc_setup.s @@ -1,4 +1,6 @@ +// Portions of this file were generated with AI assistance. + .text .align 4 .syntax unified @@ -71,6 +73,46 @@ got_setup_done: mov r2, #0 bl crt0_memory_set + /* Apply the R_ARM_RELATIVE relocations that target the module data area. */ + + ldr r3, =__FLASH_segment_start__ // crt0_memory_copy used r3 as a scratch register + ldr r0, =__reldyn_load_start__ + sub r0,r0,r3 + add r0,r0,r5 + ldr r1, =__reldyn_end__ + sub r1,r1,r3 + add r1,r1,r5 + +new_reldyn_setup: + cmp r0, r1 // See if there are more relocation entries + beq reldyn_setup_done // No, done with the relocations + ldr r6, [r0] // Pickup the r_offset field + ldr r7, [r0, #4] // Pickup the r_info field + add r0, r0, #8 // Move to the next entry + uxtb r7, r7 // The relocation type is in the low byte + cmp r7, #23 // Is it R_ARM_RELATIVE? + bne new_reldyn_setup // No, only R_ARM_RELATIVE is supported + cmp r6, r4 // Does it target the code or the data area? + blt new_reldyn_setup // The code area is shared and read-only, skip it + sub r6, r6, r4 // Compute offset of data area + add r6, r6, r9 // Build the address of the word to relocate + ldr r7, [r6] // Pickup the link time address stored there + cmp r7, #0 // Is it 0? + beq new_reldyn_setup // Yes, just skip the adjustment + cmp r7, r4 // Is it in the code or data area? + blt reldyn_flash_area // If less than, it is a code address + sub r7, r7, r4 // Compute offset of data area + add r7, r7, r9 // Build address based on the loaded data address + b reldyn_built // Finished building address +reldyn_flash_area: + sub r7, r7, r3 // Compute offset of code area + add r7, r7, r5 // Build address based on the loaded code address +reldyn_built: + str r7, [r6] // Store the relocated address back + b new_reldyn_setup // Continue at the top of the loop +reldyn_setup_done: + + /* Setup heap - not recommended for Threadx but here for compatibility reasons */ diff --git a/ports_module/cortex_m3/gnu/example_build/sample_threadx_module.ld b/ports_module/cortex_m3/gnu/example_build/sample_threadx_module.ld index 5fa4c680..f77bedda 100644 --- a/ports_module/cortex_m3/gnu/example_build/sample_threadx_module.ld +++ b/ports_module/cortex_m3/gnu/example_build/sample_threadx_module.ld @@ -206,5 +206,13 @@ SECTIONS __data_size__ = __heap_end__ - __RAM_segment_start__; + /* The dynamic linking metadata is not used by the module manager. Discarding + it keeps it out of the binary image produced from this ELF file. */ + + /DISCARD/ : + { + *(.dynamic) + } + } diff --git a/ports_module/cortex_m3/gnu/example_build/tx_initialize_low_level.S b/ports_module/cortex_m3/gnu/example_build/tx_initialize_low_level.S index edc1eef3..332adc4d 100644 --- a/ports_module/cortex_m3/gnu/example_build/tx_initialize_low_level.S +++ b/ports_module/cortex_m3/gnu/example_build/tx_initialize_low_level.S @@ -8,6 +8,7 @@ * * SPDX-License-Identifier: MIT **************************************************************************/ +// Portions of this file were generated with AI assistance. /**************************************************************************/ @@ -21,12 +22,10 @@ /**************************************************************************/ - .global _tx_thread_system_stack_ptr .global _tx_initialize_unused_memory .global __RAM_segment_used_end__ .global _tx_timer_interrupt .global __main - .global _vectors .global __tx_NMIHandler @ NMI .global __tx_BadHandler @ HardFault .global __tx_DBGHandler @ Monitor @@ -90,17 +89,6 @@ _tx_initialize_low_level: ADD r1, r1, #4 @ STR r1, [r0] @ Setup first unused memory pointer - /* Setup Vector Table Offset Register. */ - MOV r0, #0xE000E000 @ Build address of NVIC registers - LDR r1, =_vectors @ Pickup address of vector table - STR r1, [r0, #0xD08] @ Set vector table address - - /* Set system stack pointer from vector value. */ - LDR r0, =_tx_thread_system_stack_ptr @ Build address of system stack pointer - LDR r1, =_vectors @ Pickup address of vector table - LDR r1, [r1] @ Pickup reset stack pointer - STR r1, [r0] @ Save system stack pointer - /* Enable the cycle count register. */ LDR r0, =0xE0001000 @ Build address of DWT register LDR r1, [r0] @ Pickup the current value @@ -109,6 +97,9 @@ _tx_initialize_low_level: /* Configure SysTick for 100Hz clock, or 16384 cycles if no reference. */ MOV r0, #0xE000E000 @ Build address of NVIC registers + MOV r1, #0 @ Build value for SysTick reset + STR r1, [r0, #0x10] @ Reset SysTick Control + STR r1, [r0, #0x18] @ Reset SysTick Counter Value LDR r1, =SYSTICK_CYCLES STR r1, [r0, #0x14] @ Setup SysTick Reload Value MOV r1, #0x7 @ Build SysTick Control Enable Value diff --git a/ports_module/cortex_m3/gnu/inc/tx_port.h b/ports_module/cortex_m3/gnu/inc/tx_port.h index 115d5a3d..77f8faa9 100644 --- a/ports_module/cortex_m3/gnu/inc/tx_port.h +++ b/ports_module/cortex_m3/gnu/inc/tx_port.h @@ -711,7 +711,7 @@ void tx_thread_fpu_disable(void); #ifdef TX_THREAD_INIT CHAR _tx_version_id[] = - "(c) 2024 Microsoft Corp. (c) 2026-present Eclipse ThreadX contributors. * ThreadX Cortex-M3 Version 6.5.1.202602a *"; + "(c) 2024 Microsoft Corp. (c) 2026-present Eclipse ThreadX contributors. * ThreadX Cortex-M3 Version 6.5.2.202603 *"; #else #ifdef TX_MISRA_ENABLE extern CHAR _tx_version_id[100]; diff --git a/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_schedule.S b/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_schedule.S index 8336214b..cc7eb3fd 100644 --- a/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_schedule.S +++ b/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_schedule.S @@ -8,6 +8,7 @@ * * SPDX-License-Identifier: MIT **************************************************************************/ +// Portions of this file were generated with AI assistance. /**************************************************************************/ @@ -215,7 +216,7 @@ UsageFault_Handler: STR r1, [r0] // Store ICSR DSB // Wait for memory access to complete #ifdef TX_PORT_USE_BASEPRI - MOV r0, 0 // Disable BASEPRI masking (enable interrupts) + MOV r0, #0 // Disable BASEPRI masking (enable interrupts) MSR BASEPRI, r0 #else CPSIE i // Enable interrupts @@ -250,7 +251,7 @@ __tx_ts_handler: BL _tx_execution_thread_exit // Call the thread exit function POP {r0, lr} // Recover LR #ifdef TX_PORT_USE_BASEPRI - MOV r0, 0 // Disable BASEPRI masking (enable interrupts) + MOV r0, #0 // Disable BASEPRI masking (enable interrupts) MSR BASEPRI, r0 #else CPSIE i // Enable interrupts @@ -330,9 +331,19 @@ __tx_ts_wait: #endif #ifdef TX_ENABLE_WFI +#ifdef TX_PORT_USE_BASEPRI + CPSID i // Mask every interrupt with PRIMASK, which WFI ignores + MOV r1, #0 // Clear BASEPRI so that an interrupt masked by it + MSR BASEPRI, r1 // is still able to wake the processor +#endif DSB // Ensure no outstanding memory transactions WFI // Wait for interrupt ISB // Ensure pipeline is flushed +#ifdef TX_PORT_USE_BASEPRI + LDR r1, =TX_PORT_BASEPRI // Restore the BASEPRI mask + MSR BASEPRI, r1 + CPSIE i // Clear PRIMASK; a pending interrupt is taken here +#endif #endif #ifdef TX_LOW_POWER diff --git a/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_system_return.S b/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_system_return.S index 9d9a32fc..8d57c2e6 100644 --- a/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_system_return.S +++ b/ports_module/cortex_m3/gnu/module_manager/src/tx_thread_system_return.S @@ -9,6 +9,8 @@ * SPDX-License-Identifier: MIT **************************************************************************/ +// Portions of this file were generated with AI assistance. + /**************************************************************************/ /**************************************************************************/ @@ -73,6 +75,8 @@ _tx_thread_system_return: MOV r0, #0x10000000 // Load PENDSVSET bit MOV r1, #0xE000E000 // Load NVIC base STR r0, [r1, #0xD04] // Set PENDSVBIT in ICSR + DSB #0xF // Ensure memory access is complete + ISB #0xF // Flush pipeline MRS r0, IPSR // Pickup IPSR CMP r0, #0 // Is it a thread returning? BNE _isr_context // If ISR, skip interrupt enable @@ -81,10 +85,12 @@ _tx_thread_system_return: MOV r0, #0 MSR BASEPRI, r0 // Enable interrupts MSR BASEPRI, r1 // Restore original interrupt posture + ISB #0xF // Flush pipeline #else MRS r1, PRIMASK // Thread context returning, pickup PRIMASK CPSIE i // Enable interrupts MSR PRIMASK, r1 // Restore original interrupt posture + ISB #0xF // Flush pipeline #endif _isr_context: BX lr // Return to caller |