From a711ff360bb5591f34bc9f1a0c44264c8ac8177f Mon Sep 17 00:00:00 2001 From: Michel Jaouen Date: Mon, 17 Oct 2016 17:23:50 +0200 Subject: [PATCH] STM32F7xx : GCC_ARM remove zero bss, in startup. zero bss is done in libc init after call to _start. --- .../TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S | 15 --------------- .../TOOLCHAIN_GCC_ARM/startup_stm32f769xx.S | 15 --------------- .../TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S | 15 --------------- .../TOOLCHAIN_GCC_ARM/startup_stm32f769xx.s | 15 --------------- 4 files changed, 60 deletions(-) diff --git a/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S b/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S index b14a8455b8..8a950e13b3 100644 --- a/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S +++ b/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S @@ -58,10 +58,6 @@ defined in linker script */ .word _sdata /* end address for the .data section. defined in linker script */ .word _edata -/* start address for the .bss section. defined in linker script */ -.word _sbss -/* end address for the .bss section. defined in linker script */ -.word _ebss /* stack used for SystemInit_ExtMemCtl; always internal RAM used */ /** @@ -95,17 +91,6 @@ LoopCopyDataInit: adds r2, r0, r1 cmp r2, r3 bcc CopyDataInit - ldr r2, =_sbss - b LoopFillZerobss -/* Zero fill the bss segment. */ -FillZerobss: - movs r3, #0 - str r3, [r2], #4 - -LoopFillZerobss: - ldr r3, = _ebss - cmp r2, r3 - bcc FillZerobss /* Call the clock system initialization function.*/ bl SystemInit diff --git a/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F769NI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.S b/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F769NI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.S index 3cb97ec633..72833bf176 100644 --- a/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F769NI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.S +++ b/targets/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F769NI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.S @@ -58,10 +58,6 @@ defined in linker script */ .word _sdata /* end address for the .data section. defined in linker script */ .word _edata -/* start address for the .bss section. defined in linker script */ -.word _sbss -/* end address for the .bss section. defined in linker script */ -.word _ebss /* stack used for SystemInit_ExtMemCtl; always internal RAM used */ /** @@ -95,17 +91,6 @@ LoopCopyDataInit: adds r2, r0, r1 cmp r2, r3 bcc CopyDataInit - ldr r2, =_sbss - b LoopFillZerobss -/* Zero fill the bss segment. */ -FillZerobss: - movs r3, #0 - str r3, [r2], #4 - -LoopFillZerobss: - ldr r3, = _ebss - cmp r2, r3 - bcc FillZerobss /* Call the clock system initialization function.*/ bl SystemInit diff --git a/targets/TARGET_STM/TARGET_STM32F7/TARGET_F746_F756/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S b/targets/TARGET_STM/TARGET_STM32F7/TARGET_F746_F756/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S index b14a8455b8..8a950e13b3 100644 --- a/targets/TARGET_STM/TARGET_STM32F7/TARGET_F746_F756/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S +++ b/targets/TARGET_STM/TARGET_STM32F7/TARGET_F746_F756/device/TOOLCHAIN_GCC_ARM/startup_stm32f746xx.S @@ -58,10 +58,6 @@ defined in linker script */ .word _sdata /* end address for the .data section. defined in linker script */ .word _edata -/* start address for the .bss section. defined in linker script */ -.word _sbss -/* end address for the .bss section. defined in linker script */ -.word _ebss /* stack used for SystemInit_ExtMemCtl; always internal RAM used */ /** @@ -95,17 +91,6 @@ LoopCopyDataInit: adds r2, r0, r1 cmp r2, r3 bcc CopyDataInit - ldr r2, =_sbss - b LoopFillZerobss -/* Zero fill the bss segment. */ -FillZerobss: - movs r3, #0 - str r3, [r2], #4 - -LoopFillZerobss: - ldr r3, = _ebss - cmp r2, r3 - bcc FillZerobss /* Call the clock system initialization function.*/ bl SystemInit diff --git a/targets/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F767ZI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.s b/targets/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F767ZI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.s index 3cb97ec633..72833bf176 100644 --- a/targets/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F767ZI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.s +++ b/targets/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F767ZI/device/TOOLCHAIN_GCC_ARM/startup_stm32f769xx.s @@ -58,10 +58,6 @@ defined in linker script */ .word _sdata /* end address for the .data section. defined in linker script */ .word _edata -/* start address for the .bss section. defined in linker script */ -.word _sbss -/* end address for the .bss section. defined in linker script */ -.word _ebss /* stack used for SystemInit_ExtMemCtl; always internal RAM used */ /** @@ -95,17 +91,6 @@ LoopCopyDataInit: adds r2, r0, r1 cmp r2, r3 bcc CopyDataInit - ldr r2, =_sbss - b LoopFillZerobss -/* Zero fill the bss segment. */ -FillZerobss: - movs r3, #0 - str r3, [r2], #4 - -LoopFillZerobss: - ldr r3, = _ebss - cmp r2, r3 - bcc FillZerobss /* Call the clock system initialization function.*/ bl SystemInit