Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training




Loading

ARM7 Inline assembler issues

Posted by Nobody/Anonymous on November 30, 2004
Some cross compilers will not allow you to manipulate stack pointer SP.
For example the compiler will crib at the following inline assembly code which are part of EnterCritical & ExitCritical macros

__asm{ STMDBSP!, {R0}};/* Push R0.*/
......
......
.......
__asm{ LDMIASP!, {R0}};/* Pop R0.*/

It seems the compiler will do the pushing and poppin.

Development suite metroworks codewarrior for ARM7.


RE: ARM7 Inline assembler issues

Posted by Nobody/Anonymous on November 30, 2004
Can you write it "out of line" in a separate asm file?

RE: ARM7 Inline assembler issues

Posted by Nobody/Anonymous on November 30, 2004
Sure it works just fine as standalone assembler code, I am just providing a helpful info to potential users with the same development environment.

inline asm syntax error in DISABLE_INTERRUPTS

Posted by Nobody/Anonymous on January 12, 2007
hi,
I am a beginner to FreeRTOS and also Keil. I have a LPC2148 development board. I tried to run the freeRTOS with a small test task, but while compiling it says there is a systax error in the inline asm macro defined in portmacro.h specifically in the DISABLE_INTERRUPTS macro.

I would be great ful, if some one can guide my working it out.

thank you,
Shanmuganandh

RE: inline asm syntax error in DISABLE_INTERRUPTS

Posted by embeddedc on January 12, 2007
Probably you are using the wrong compiler. The Keil demo was written using the Keil compiler, which you cannot get anymore. Keil now ship with the RVDS compiler, which is not compatible.


[ Back to the top ]    [ About FreeRTOS ]    [ Sitemap ]    [ ]




Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.


Free TCP/IP and file system demos for the RTOS


Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists