Gcc 4.4 Loongson 2F specific integer multiply/divide instruction patch

http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00273.html
I have put it in my loongson overlay.
BTW, the gcc svn ebuild is from dirtyepic's overlay. Thanks, ;)

zhangle@2f ~ $ cat hello.c
#include<stdio.h>
int mul(){
   unsigned long a = 0xffffffff;
   unsigned long b = 0xf;
   return a * b;
}
zhangle@2f ~ $ gcc -march=loongson2f hello.c -S
zhangle@2f ~ $ gcc -march=mips3 hello.c -S -o hello-mips3.s
zhangle@2f ~ $ diff -u hello.s hello-mips3.s
--- hello.s  2008-11-08 18:16:52.000000000 +0800
+++ hello-mips3.s       2008-11-08 18:16:55.000000000 +0800
@@ -25,7 +25,8 @@
   sw   $2,8($fp)
   lw   $3,12($fp)
   lw   $2,8($fp)
-       multu.g $2,$3,$2
+       mult $3,$2
+       mflo $2
   move $sp,$fp
   lw   $fp,20($sp)
   addiu   $sp,$sp,24

Comments

Post a Comment

Popular posts from this blog

portage-2.2 preserve-libs FEATURES explained

Maybe I am not the right person to write about it. But I felt the necessity to write about it. So I will just write something about preserve-libs, leaving other FEATURES to more competent people. Portage-2.2 has already entered unstable tree. Many people has started using it. It has many new features, like preserve-libs, sets, license filter and so on. Please check README and RELEASE-NOTES for a complete list. I will only talk about preserve-libs. To understand why we need it, we have to know some background information. First of all, applications are not built from scratch. Any non trivial apps use lot of libraries. In GNU/Linux, most of them are shared libraries, i.e. .so files. You can use `ldd /usr/bin/mplayer` to check what shared libraries an app has been linked to, replace mplayer to whatever program you'd like to check. Shared libraries have versions. E.g. /usr/lib/libavformat.so.51, here 51 denotes its version. After upgrading, the version number may change. E.g. /usr/lib/...
Read more

Send $SGB (Songbird) to another wallet using a script

You need nodejs and web3 to run it:  const Web3 = require('web3'); // Variables definition const privKey = '8xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx2'; // Genesis private key const addressFrom = '0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'; const addressTo = '0xBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB'; const web3 = new Web3('https://songbird.towolabs.com/rpc'); // Create transaction const deploy = async () => { console.log( `Attempting to make transaction from ${addressFrom} to ${addressTo}` ); const createTransaction = await web3.eth.accounts.signTransaction( { from: addressFrom, to: addressTo, value: web3.utils.toWei('1', 'ether'), // Send 1 SGB. 'ether' is not a typo here. gasPrice: web3.utils.toWei('225', 'Gwei'), gas: '21000', }, privKey ); // Deploy transaction const createR...
Read more

The diff between the original SEC complaint against Ripple and the amended one

--- original.txt 2021-02-18 18:32:43.171832036 -0800 +++ amended.txt 2021-02-18 18:32:29.103735165 -0800 @@ -1,4 +1,4 @@ -Case 1:20-cv-10832 Document 4 Filed 12/22/20 Page 1 of 71 +Case 1:20-cv-10832-AT Document 46 Filed 02/18/21 Page 1 of 79 Richard Best Kristina Littman @@ -34,9 +34,9 @@ : ------------------------------------------------------------------------x -20 Civ. 10832 +20 Civ. 10832 (AT) ECF Case -Complaint +First Amended Complaint Jury Trial Demanded Plaintiff Securities and Exchange Commission (the “SEC”), for its Complaint against @@ -53,7 +53,7 @@ required by the federal securities laws, and no exemption from this requirement applied. 1 -Case 1:20-cv-10832 Document 4 Filed 12/22/20 Page 2 of 71 +Case 1:20-cv-10832-AT Document 46 Filed 02/18/21 Page 2 of 79 2. @@ -103,7 +103,7 @@ 2 -Case 1:20-cv-10832 Document 4 Filed 12/22/20 Page 3 of 71 +Case 1:20-cv-10832-AT Document 46 Filed 02/18/21 Page 3 of 79 VIOLATIONS 9. @@ -150,...
Read more