sandip4n

#!/bin/sh
# risudump - A wrapper script for dumping test blobs generated by
#            risu (https://git.linaro.org/people/peter.maydell/risu.git)
#
# Copyright (C) 2018 Sandipan Das
#

if [ -z "$1" ] ; then
	echo "Usage: $0 <file>"
	exit 1

sandip4n

struct resv_map
--> for MAP_SHARED, resv_map is preallocated at some point and kept
    in the inode mapping metadata
    --> inode_resv_map()
        --> resv_map = inode->i_mapping->private_data
--> for MAP_ANONYMOUS, vma->vm_private_data points to the map

sys_mmap() with MAP_PRIVATE, MAP_ANONYMOUS, MAP_HUGETLB in flags
--> ksys_mmap_pgoff()
    --> hugetlb_file_setup()

sandip4n

#define _LARGEFILE64_SOURCE
#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>

#include <errno.h>
#include <sys/mman.h>

sandip4n

/*
 * Compile as follows:
 * 	gcc -O0 -nostdlib -static gem5-endian-test.c
 */

#ifndef __powerpc64__
#error "unsupported architecture"
#endif

#define MSG	"Hello world\n"

sandip4n

diff --git a/src/arch/power/isa/decoder.isa b/src/arch/power/isa/decoder.isa
index 0dbe35a88..dd4a3a83c 100644
--- a/src/arch/power/isa/decoder.isa
+++ b/src/arch/power/isa/decoder.isa
@@ -40,6 +40,14 @@
 //
 decode PO default Unknown::unknown() {
 
+    format IntOp {
+        // Fake endianness switch

sandip4n

for file in (find $HOME/.config/fish/completions -name 'git-*.fish')
	set gitcmd (basename $file .fish)
	set subcmd (echo $gitcmd | sed 's/git-//g')
	sed -i 's/'$gitcmd' /git -n \'__fish_git_using_command '$subcmd'\' /1' $file
end

sandip4n

#!/usr/bin/python

from __future__ import print_function
from bcc import BPF
from bcc.utils import printb
from time import sleep

# load BPF program
b = BPF(text="""
#include <uapi/linux/ptrace.h>

sandip4n

## Hello World - PPC64LE Assembly
## This is the ELF ABI v2 little-endian equivalent of
## https://developer.ibm.com/articles/l-ppc/#listing-4-hello-world-ppc64-assembly
##
## Cross-compile as shown below.
## 	$ powerpc64le-linux-gnu-as hello.s -o hello.o
##	$ powerpc64le-linux-gnu-ld hello.o -o hello
##
## Author: Sandipan Das <sandipan@linux.ibm.com>
##

sandip4n

## Building on Fedora 31
sudo dnf -y install python2-scons python3-scons python2-devel python3-devel \
                    protobuf-devel protobuf-compiler gperftools-devel

## Generate Gtags
find src/ -type f -print | gtags -i -f -

## Build for POWER
scons CPU_MODELS="AtomicSimpleCPU" build/POWER/gem5.debug -j4

sandip4n

/*
 * Compile as:
 * 	powerpc64-linux-gnu-gcc -o radix-stress	-g -O0		\
 * 				-mcpu=powerpc64	-mno-altivec	\
 * 				-mno-vsx -nostdlib -static	\
 * 				radix-stress.c
 */

#ifndef __powerpc64__
#error "unsupported architecture"