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Fix for using LTO in Arduino IDE 2.x to reduce flash usage #215

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f95df0e
Move handlers from startup_ch32....S to ch32...._misc.c to fix LTO (s…
maxint-rd Aug 4, 2025
6584e7f
[CH32X035] moved handlers from startup_ch32x035.S to ch32x035_misc.c
maxint-rd Aug 5, 2025
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28 changes: 28 additions & 0 deletions system/CH32V00x/SRC/Peripheral/src/ch32v00x_misc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -107,3 +107,31 @@ void NVIC_Init(NVIC_InitTypeDef *NVIC_InitStruct)
NVIC_DisableIRQ(NVIC_InitStruct->NVIC_IRQChannel);
}
}


/* MMOLE 250727: moved from startup_ch32v00x.S to ch32v00x_misc.c (see issue #204) */
__attribute__ ((weak)) void while1_handler(void) {while(1);};
__attribute__ ((weak)) void SW_Handler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void WWDG_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void PVD_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void FLASH_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void RCC_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void EXTI7_0_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void AWU_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel2_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel3_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel4_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel5_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel6_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel7_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void ADC1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_EV_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_ER_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void SPI1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_BRK_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_UP_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_TRG_COM_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_CC_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
3 changes: 3 additions & 0 deletions system/CH32V00x/SRC/Startup/startup_ch32v00x.S
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,8 @@ _start:
.word TIM1_CC_IRQHandler /* TIM1 Capture Compare */
.word TIM2_IRQHandler /* TIM2 */

/* MMOLE 250727: moved from startup_ch32v00x.S to ch32v00x_misc.c (see issue #204)

.option rvc;
.section .text.vector_handler, "ax", @progbits
.weak NMI_Handler
Expand Down Expand Up @@ -114,6 +116,7 @@ TIM1_TRG_COM_IRQHandler: 1: j 1b
TIM1_CC_IRQHandler: 1: j 1b
TIM2_IRQHandler: 1: j 1b

*/

.section .text.handle_reset, "ax", @progbits
.weak handle_reset
Expand Down
36 changes: 36 additions & 0 deletions system/CH32VM00X/SRC/Peripheral/src/ch32v00X_misc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -79,3 +79,39 @@ void NVIC_Init(NVIC_InitTypeDef *NVIC_InitStruct)
NVIC_DisableIRQ(NVIC_InitStruct->NVIC_IRQChannel);
}
}


/* MMOLE 250727: moved from startup_ch32v00X.S to ch32v00X_misc.c (see issue #204) */
__attribute__ ((weak)) void while1_handler(void) {while(1);};
__attribute__ ((weak)) void SW_Handler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void WWDG_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void PVD_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void FLASH_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void RCC_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void EXTI7_0_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void AWU_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel2_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel3_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel4_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel5_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel6_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel7_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void ADC1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_EV_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_ER_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void SPI1_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_BRK_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_UP_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_TRG_COM_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_CC_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART2_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void OPCM_IRQHandler(void) __attribute__ ((weak, alias ("while1_handler")));

/*
.weak NMI_Handler
.weak HardFault_Handler
.weak SysTick_Handler
*/
3 changes: 3 additions & 0 deletions system/CH32VM00X/SRC/Startup/startup_ch32v00X.S
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ _start:
.word USART2_IRQHandler /* USART2 */
.word OPCM_IRQHandler /* OPCM */

/* MMOLE 250727: moved from startup_ch32v00X.S to ch32v00X_misc.c (see issue #204)
.option rvc;
.section .text.vector_handler, "ax", @progbits
.weak NMI_Handler
Expand Down Expand Up @@ -121,6 +122,8 @@ USART2_IRQHandler:
OPCM_IRQHandler:
1:
j 1b

*/

.section .text.handle_reset, "ax", @progbits
.weak handle_reset
Expand Down
51 changes: 51 additions & 0 deletions system/CH32X035/SRC/Peripheral/src/ch32x035_misc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -107,3 +107,54 @@ void NVIC_Init(NVIC_InitTypeDef *NVIC_InitStruct)
NVIC_DisableIRQ(NVIC_InitStruct->NVIC_IRQChannel);
}
}

/* MMOLE 250805: moved from startup_ch32x035.S to ch32x035_misc.c (see issue #204) */
__attribute__ ((weak)) void while1_handler(void) {while(1);};
__attribute__ ((weak)) void Ecall_M_Mode_Handler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void Ecall_U_Mode_Handler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void Break_Point_Handler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void SW_Handler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void WWDG_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void PVD_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void FLASH_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void EXTI7_0_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void AWU_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel1_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel2_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel3_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel4_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel5_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel6_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel7_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void ADC1_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_EV_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void I2C1_ER_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART1_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void SPI1_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_BRK_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_UP_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_TRG_COM_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM1_CC_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_UP_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART2_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void EXTI15_8_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void EXTI25_16_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART3_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USART4_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void DMA1_Channel8_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USBFS_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USBFSWakeUp_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void PIOC_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void OPA_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USBPD_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void USBPDWakeUp_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_CC_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_TRG_COM_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM2_BRK_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));
__attribute__ ((weak)) void TIM3_IRQHandler (void) __attribute__ ((weak, alias ("while1_handler")));

/*
NMI_Handler: 1: j 1b
HardFault_Handler: 1: j 1b
SysTick_Handler: 1: j 1b
*/
92 changes: 47 additions & 45 deletions system/CH32X035/SRC/Startup/startup_ch32x035.S
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Original file line number Diff line number Diff line change
Expand Up @@ -76,54 +76,55 @@ _vector_base:
.word TIM2_BRK_IRQHandler /* TIM2 Break */
.word TIM3_IRQHandler /* TIM3 */

/* MMOLE 250805: moved from startup_ch32x035.S to ch32x035_misc.c (see issue #204)
.option rvc;

.section .text.vector_handler, "ax", @progbits
.weak NMI_Handler /* NMI */
.weak HardFault_Handler /* Hard Fault */
.weak Ecall_M_Mode_Handler /* Ecall M Mode */
.weak Ecall_U_Mode_Handler /* Ecall U Mode */
.weak Break_Point_Handler /* Break Point */
.weak SysTick_Handler /* SysTick */
.weak SW_Handler /* SW */
.weak WWDG_IRQHandler /* Window Watchdog */
.weak PVD_IRQHandler /* PVD through EXTI Line detect */
.weak FLASH_IRQHandler /* Flash */
.weak EXTI7_0_IRQHandler /* EXTI Line 7..0 */
.weak AWU_IRQHandler /* Auto Wake up */
.weak DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */
.weak DMA1_Channel2_IRQHandler /* DMA1 Channel 2 */
.weak DMA1_Channel3_IRQHandler /* DMA1 Channel 3 */
.weak DMA1_Channel4_IRQHandler /* DMA1 Channel 4 */
.weak DMA1_Channel5_IRQHandler /* DMA1 Channel 5 */
.weak DMA1_Channel6_IRQHandler /* DMA1 Channel 6 */
.weak DMA1_Channel7_IRQHandler /* DMA1 Channel 7 */
.weak ADC1_IRQHandler /* ADC1 */
.weak I2C1_EV_IRQHandler /* I2C1 Event */
.weak I2C1_ER_IRQHandler /* I2C1 Error */
.weak USART1_IRQHandler /* USART1 */
.weak SPI1_IRQHandler /* SPI1 */
.weak TIM1_BRK_IRQHandler /* TIM1 Break */
.weak TIM1_UP_IRQHandler /* TIM1 Update */
.weak TIM1_TRG_COM_IRQHandler /* TIM1 Trigger and Commutation */
.weak TIM1_CC_IRQHandler /* TIM1 Capture Compare */
.weak TIM2_UP_IRQHandler /* TIM2 Update */
.weak USART2_IRQHandler /* USART2 */
.weak EXTI15_8_IRQHandler /* EXTI Line 15..8 */
.weak EXTI25_16_IRQHandler /* EXTI Line 25..16 */
.weak USART3_IRQHandler /* USART3 */
.weak USART4_IRQHandler /* USART4 */
.weak DMA1_Channel8_IRQHandler /* DMA1 Channel8 */
.weak USBFS_IRQHandler /* USBFS Break */
.weak USBFSWakeUp_IRQHandler /* USBFS Wake up from suspend */
.weak PIOC_IRQHandler /* PIOC */
.weak OPA_IRQHandler /* OPA */
.weak USBPD_IRQHandler /* USBPD */
.weak USBPDWakeUp_IRQHandler /* USBPD Wake up */
.weak TIM2_CC_IRQHandler /* TIM2 Capture Compare */
.weak TIM2_TRG_COM_IRQHandler /* TIM2 Trigger and Commutation */
.weak TIM2_BRK_IRQHandler /* TIM2 Break */
.weak TIM3_IRQHandler /* TIM3 */
.weak NMI_Handler
.weak HardFault_Handler
.weak Ecall_M_Mode_Handler
.weak Ecall_U_Mode_Handler
.weak Break_Point_Handler
.weak SysTick_Handler
.weak SW_Handler
.weak WWDG_IRQHandler
.weak PVD_IRQHandler
.weak FLASH_IRQHandler
.weak EXTI7_0_IRQHandler
.weak AWU_IRQHandler
.weak DMA1_Channel1_IRQHandler
.weak DMA1_Channel2_IRQHandler
.weak DMA1_Channel3_IRQHandler
.weak DMA1_Channel4_IRQHandler
.weak DMA1_Channel5_IRQHandler
.weak DMA1_Channel6_IRQHandler
.weak DMA1_Channel7_IRQHandler
.weak ADC1_IRQHandler
.weak I2C1_EV_IRQHandler
.weak I2C1_ER_IRQHandler
.weak USART1_IRQHandler
.weak SPI1_IRQHandler
.weak TIM1_BRK_IRQHandler
.weak TIM1_UP_IRQHandler
.weak TIM1_TRG_COM_IRQHandler
.weak TIM1_CC_IRQHandler
.weak TIM2_UP_IRQHandler
.weak USART2_IRQHandler
.weak EXTI15_8_IRQHandler
.weak EXTI25_16_IRQHandler
.weak USART3_IRQHandler
.weak USART4_IRQHandler
.weak DMA1_Channel8_IRQHandler
.weak USBFS_IRQHandler
.weak USBFSWakeUp_IRQHandler
.weak PIOC_IRQHandler
.weak OPA_IRQHandler
.weak USBPD_IRQHandler
.weak USBPDWakeUp_IRQHandler
.weak TIM2_CC_IRQHandler
.weak TIM2_TRG_COM_IRQHandler
.weak TIM2_BRK_IRQHandler
.weak TIM3_IRQHandler

NMI_Handler: 1: j 1b
HardFault_Handler: 1: j 1b
Expand Down Expand Up @@ -170,6 +171,7 @@ TIM2_CC_IRQHandler: 1: j 1b
TIM2_TRG_COM_IRQHandler: 1: j 1b
TIM2_BRK_IRQHandler: 1: j 1b
TIM3_IRQHandler: 1: j 1b
*/

.section .text.handle_reset,"ax",@progbits
.weak handle_reset
Expand Down