Subject:
|
Re: RCX_COMPILER define
|
Newsgroups:
|
lugnet.robotics.rcx.legos
|
Date:
|
Tue, 11 Sep 2001 22:12:02 GMT
|
Viewed:
|
1715 times
|
| |
|
|
> I have been reading past posts to this group, and come across • references to
> RCX_COMPILER, a define needed to be patched into gcc. I have used • the CygWin
> default sources, and the compiler produced successfully recompiled • the legOS
> kernel, but I am worried that there may be a lurking bug due to the • absence
> of the RCX_COMPILER patch.
What RCX_COMPILER does is to add an optimization inside GCC for ISR on
RCX platform.
GCC without RCX_COMPILER patch should compile without problems any
project. You should only take care of ISR function using a syntax
like:
--------
//! battery indicator handler, called from system timer interrupt
#ifdef CONF_RCX_COMPILER
void battery_refresh(void) {
#else
HANDLER_WRAPPER("battery_refresh","battery_refresh_core");
void battery_refresh_core(void) {
#endif
--------
Here is the HANDLER_WRAPPER definition from irq.h:
--------
#ifdef CONF_RCX_COMPILER
#define HANDLER_WRAPPER(wrapstring,handstring)
#else
#define HANDLER_WRAPPER(wrapstring,handstring) \
__asm__ (".text\n.align 1\n.global _" wrapstring "\n_" wrapstring \
": push r0\npush r1\npush r2\npush r3\njsr @_" handstring \
"\npop r3\npop r2\npop r1\npop r0\nrts\n")
#endif
--------
Bye,
Paolo.
---
Etorre's Observation: The other line moves faster.
|
|
Message is in Reply To:
 | | RCX_COMPILER define
|
| I am a new legOS user. Here is summary of my setup: CygWin 1.3.2 and associated bits. h8300-hms targeted binutils and gcc built from the CygWin source tarballs. I have been reading past posts to this group, and come across references to (...) (23 years ago, 13-Jul-01, to lugnet.robotics.rcx.legos)
|
2 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
