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Re: documentation on "sjlj exceptions", DWARF2, etc?

From: Per Bothner <per at bothner dot com>
To: Bryce McKinlay <bryce at waitaki dot otago dot ac dot nz>
Cc: Adam Megacz <gcj at lists dot megacz dot com>, java at gcc dot gnu dot org
Date: Tue, 11 Dec 2001 21:14:52 -0800
Subject: Re: documentation on "sjlj exceptions", DWARF2, etc?
References: <861yi1cnca.fsf@megacz.com> <3C16AB4D.3040801@waitaki.otago.ac.nz> <867krtb4ke.fsf@megacz.com> <3C16BB00.7090409@waitaki.otago.ac.nz>

Bryce McKinlay wrote:

> Adam Megacz wrote:
> 
>> Okay, so I'm trying to assess the performance implications here. My
>> code enters lots of try blocks but almost never throws exceptions
>> during normal operation.
>>
>> Is setjmp() an actuall function call, or syntactic sugar for some
>> platform-specific opcode? If the former is the case, does it get
>> inlined?

Tradionally, setjmp is a function written in assembler that saves
all the registers (or at least all the callee-save ones) in the jmpbuf.
More sophisticated ones are aware of setjmp - but I believe they
still have to call a function on most platforms.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/

References:
- documentation on "sjlj exceptions", DWARF2, etc?
  - From: Adam Megacz
- Re: documentation on "sjlj exceptions", DWARF2, etc?
  - From: Bryce McKinlay
- Re: documentation on "sjlj exceptions", DWARF2, etc?
  - From: Adam Megacz
- Re: documentation on "sjlj exceptions", DWARF2, etc?
  - From: Bryce McKinlay

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