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Re: x86 inline assembler to stop in debugger

Subject: Re: x86 inline assembler to stop in debugger
From: Eric Albert <email@hidden>
Date: Mon, 30 Jan 2006 09:19:55 -0800
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On Jan 30, 2006, at 9:04 AM, Brad Oliver wrote:

On Jan 30, 2006, at 9:57 AM, email@hidden wrote:
Sorry; I ignored the PPC side of your code earlier. :)  On PPC, you'll
want this:
#define DebugBreak() if (AmIBeingDebugged()) { __asm__ volatile
("trap"); }
OK, I have a dumb question. :-) Why wouldn't calling Debugger() work for these cases instead of using inline assembler targeting a specific CPU?

As far as I can tell -- I haven't tested it -- Debugger() only breaks if the USERBREAK environment variable is set to 1. In that case it sends a SIGINT to the current thread. That's not quite the same as a SIGTRAP.

-Eric

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