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Re: [avr-gcc-list] generic queue library for AVR GCC?
From: |
Richard Urwin |
Subject: |
Re: [avr-gcc-list] generic queue library for AVR GCC? |
Date: |
Tue, 16 Nov 2004 17:53:42 +0000 |
User-agent: |
KMail/1.5.3 |
On Tuesday 16 Nov 2004 9:36 am, David Brown wrote:
> static inline unsigned char begin_critical_section(void) {
> unsigned char s = SREG;
> cli();
> return s;
> }
>
But you still have to declare a variable to hold the return value, and
that was what broke the #define version.
Given an optimising compiler:
typedef enum {cs_start, cs_end} cs_enum;
static inline unsigned char critical_section(cs_enum dir)
{
static unsigned char s;
switch(dir)
{
case cs_start:
s = SREG;
cli();
break;
case cs_end:
SREG = s;
}
}
Not much bug protection there though.
--
Richard Urwin
- Re: [avr-gcc-list] generic queue library for AVR GCC?, (continued)
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Bruce D. Lightner, 2004/11/15
- Re: [avr-gcc-list] generic queue library for AVR GCC?, E. Weddington, 2004/11/15
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Bruce D. Lightner, 2004/11/15
- Re: [avr-gcc-list] generic queue library for AVR GCC?, E. Weddington, 2004/11/15
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Richard Urwin, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, gouy yann, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Bjarne Laursen, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, David Brown, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Ian Caddy, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, David Brown, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?,
Richard Urwin <=
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Geoffrey Wossum, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Richard Urwin, 2004/11/16
- Re: [avr-gcc-list] generic queue library for AVR GCC?, David Brown, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Mike Panetta, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, David Brown, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, E. Weddington, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, rusty+avr-gcc-list, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, Ben L. Titzer, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, E. Weddington, 2004/11/17
- Re: [avr-gcc-list] generic queue library for AVR GCC?, E. Weddington, 2004/11/17