Date: Sun, 27 Feb 2000 06:35:55 +0600 (LKT) From: Kalum Somaratna aka Grendel X-Sender: root AT darkstar DOT grendel DOT net To: djgpp AT delorie DOT com cc: trancelucid AT videotron DOT ca Subject: Re: Fastest bitblt? In-Reply-To: <38B82EB8.95549264@videotron.ca> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Reply-To: djgpp AT delorie DOT com Errors-To: dj-admin AT delorie DOT com X-Mailing-List: djgpp AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Sat, 26 Feb 2000, Trancelucid wrote: > > > There is a switch to get GCC to show its assembler opcodes. Browse > > the GCC manual: > > C:\>info gcc > > Would you know what the switch is? I did a search for both "assembler" > and "opcode", as well as browse through the menus, but could'nt find > anything :( Well the DJGPP FAQ has all you need in section 8.20. ususally the -S switch is what you need. Anyway heres the relevant section of the FAQ since it is very small. *A*: Use the `-S' (note: _capital_ S) switch to GCC, and it will emit the assembly code to a file with a `.s' extension. For example, the following command: gcc -O2 -S -c foo.c will leave the generated assembly code on the file `foo.s'. If you want to see the C code together with the assembly it was converted to, use a command line like this: gcc -c -Wa,-a,-ad [other GCC options] foo.c > foo.lst which will output the combined C/assembly listing to the file `foo.lst'. If you need to both get the assembly code _and_ to compile/link the program, you can either give the `-save-temps' option to GCC (which will leave all the temporary files including the `.s' file in the current directory), or use the `-Wa,aln=foo.s' option which instructs the assembler to output the assembly translation of the C code (together with the hex machine code and some additional info) to the file named after the `='. Hope this helps, Grendel Hi, I'm a signature virus. plz set me as your signature and help me spread :)