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| author | johannst <johannst@users.noreply.github.com> | 2022-04-30 17:43:08 +0000 |
|---|---|---|
| committer | johannst <johannst@users.noreply.github.com> | 2022-04-30 17:43:08 +0000 |
| commit | d9a14daa00e62de637c063f357c38cd86efd7666 (patch) | |
| tree | b4d8182c8eb1c016672ecc1765ded6eea370076e /print.html | |
| parent | 039b83e9f2854082928ee92dcefe032570e4c14a (diff) | |
| download | notes-d9a14daa00e62de637c063f357c38cd86efd7666.tar.gz notes-d9a14daa00e62de637c063f357c38cd86efd7666.zip | |
deploy: f33fbacc6aaa54599458ac3eb375708650656010
Diffstat (limited to 'print.html')
| -rw-r--r-- | print.html | 106 |
1 files changed, 101 insertions, 5 deletions
@@ -83,7 +83,7 @@ <nav id="sidebar" class="sidebar" aria-label="Table of contents"> <div id="sidebar-scrollbox" class="sidebar-scrollbox"> - <ol class="chapter"><li class="expanded affix "><a href="intro.html">Introduction</a></li><li class="expanded "><a href="tools/index.html"><strong aria-hidden="true">1.</strong> Tools</a></li><li><ol class="section"><li class="expanded "><a href="tools/zsh.html"><strong aria-hidden="true">1.1.</strong> zsh</a></li><li class="expanded "><a href="tools/bash.html"><strong aria-hidden="true">1.2.</strong> bash</a></li><li class="expanded "><a href="tools/fish.html"><strong aria-hidden="true">1.3.</strong> fish</a></li><li class="expanded "><a href="tools/tmux.html"><strong aria-hidden="true">1.4.</strong> tmux</a></li><li class="expanded "><a href="tools/git.html"><strong aria-hidden="true">1.5.</strong> git</a></li><li class="expanded "><a href="tools/awk.html"><strong aria-hidden="true">1.6.</strong> awk</a></li><li class="expanded "><a href="tools/emacs.html"><strong aria-hidden="true">1.7.</strong> emacs</a></li><li class="expanded "><a href="tools/gpg.html"><strong aria-hidden="true">1.8.</strong> gpg</a></li><li class="expanded "><a href="tools/gdb.html"><strong aria-hidden="true">1.9.</strong> gdb</a></li><li class="expanded "><a href="tools/gdbserver.html"><strong aria-hidden="true">1.10.</strong> gdbserver</a></li><li class="expanded "><a href="tools/radare2.html"><strong aria-hidden="true">1.11.</strong> radare2</a></li><li class="expanded "><a href="tools/qemu.html"><strong aria-hidden="true">1.12.</strong> qemu</a></li><li class="expanded "><a href="tools/pacman.html"><strong aria-hidden="true">1.13.</strong> pacman</a></li></ol></li><li class="expanded "><a href="monitor/index.html"><strong aria-hidden="true">2.</strong> Resource analysis & monitor</a></li><li><ol class="section"><li class="expanded "><a href="monitor/lsof.html"><strong aria-hidden="true">2.1.</strong> lsof</a></li><li class="expanded "><a href="monitor/ss.html"><strong aria-hidden="true">2.2.</strong> ss</a></li><li class="expanded "><a href="monitor/pidstat.html"><strong aria-hidden="true">2.3.</strong> pidstat</a></li><li class="expanded "><a href="monitor/pgrep.html"><strong aria-hidden="true">2.4.</strong> pgrep</a></li><li class="expanded "><a href="monitor/pmap.html"><strong aria-hidden="true">2.5.</strong> pmap</a></li><li class="expanded "><a href="monitor/pstack.html"><strong aria-hidden="true">2.6.</strong> pstack</a></li></ol></li><li class="expanded "><a href="trace_profile/index.html"><strong aria-hidden="true">3.</strong> Trace and Profile</a></li><li><ol class="section"><li class="expanded "><a href="trace_profile/strace.html"><strong aria-hidden="true">3.1.</strong> strace</a></li><li class="expanded "><a href="trace_profile/ltrace.html"><strong aria-hidden="true">3.2.</strong> ltrace</a></li><li class="expanded "><a href="trace_profile/perf.html"><strong aria-hidden="true">3.3.</strong> perf</a></li><li class="expanded "><a href="trace_profile/oprofile.html"><strong aria-hidden="true">3.4.</strong> OProfile</a></li><li class="expanded "><a href="trace_profile/time.html"><strong aria-hidden="true">3.5.</strong> time</a></li></ol></li><li class="expanded "><a href="binary/index.html"><strong aria-hidden="true">4.</strong> Binary</a></li><li><ol class="section"><li class="expanded "><a href="binary/od.html"><strong aria-hidden="true">4.1.</strong> od</a></li><li class="expanded "><a href="binary/xxd.html"><strong aria-hidden="true">4.2.</strong> xxd</a></li><li class="expanded "><a href="binary/readelf.html"><strong aria-hidden="true">4.3.</strong> readelf</a></li><li class="expanded "><a href="binary/objdump.html"><strong aria-hidden="true">4.4.</strong> objdump</a></li><li class="expanded "><a href="binary/nm.html"><strong aria-hidden="true">4.5.</strong> nm</a></li></ol></li><li class="expanded "><a href="development/index.html"><strong aria-hidden="true">5.</strong> Development</a></li><li><ol class="section"><li class="expanded "><a href="development/c++filt.html"><strong aria-hidden="true">5.1.</strong> c++filt</a></li><li class="expanded "><a href="development/c++.html"><strong aria-hidden="true">5.2.</strong> c++</a></li><li class="expanded "><a href="development/glibc.html"><strong aria-hidden="true">5.3.</strong> glibc</a></li><li class="expanded "><a href="development/gcc.html"><strong aria-hidden="true">5.4.</strong> gcc</a></li><li class="expanded "><a href="development/make.html"><strong aria-hidden="true">5.5.</strong> make</a></li><li class="expanded "><a href="development/ld.so.html"><strong aria-hidden="true">5.6.</strong> ld.so</a></li><li class="expanded "><a href="development/symbolver.html"><strong aria-hidden="true">5.7.</strong> symbol versioning</a></li><li class="expanded "><a href="development/python.html"><strong aria-hidden="true">5.8.</strong> python</a></li></ol></li><li class="expanded "><a href="linux/index.html"><strong aria-hidden="true">6.</strong> Linux</a></li><li><ol class="section"><li class="expanded "><a href="linux/systemd.html"><strong aria-hidden="true">6.1.</strong> systemd</a></li><li class="expanded "><a href="linux/coredump.html"><strong aria-hidden="true">6.2.</strong> coredump</a></li><li class="expanded "><a href="linux/ptrace_scope.html"><strong aria-hidden="true">6.3.</strong> ptrace_scope</a></li></ol></li><li class="expanded "><a href="network/index.html"><strong aria-hidden="true">7.</strong> Network</a></li><li><ol class="section"><li class="expanded "><a href="network/tcpdump.html"><strong aria-hidden="true">7.1.</strong> tcpdump</a></li></ol></li><li class="expanded "><a href="arch/index.html"><strong aria-hidden="true">8.</strong> Arch</a></li><li><ol class="section"><li class="expanded "><a href="arch/x86_64.html"><strong aria-hidden="true">8.1.</strong> x86_64</a></li><li class="expanded "><a href="arch/arm64.html"><strong aria-hidden="true">8.2.</strong> arm64</a></li><li class="expanded "><a href="arch/armv7.html"><strong aria-hidden="true">8.3.</strong> armv7</a></li></ol></li></ol> + <ol class="chapter"><li class="expanded affix "><a href="intro.html">Introduction</a></li><li class="expanded "><a href="tools/index.html"><strong aria-hidden="true">1.</strong> Tools</a></li><li><ol class="section"><li class="expanded "><a href="tools/zsh.html"><strong aria-hidden="true">1.1.</strong> zsh</a></li><li class="expanded "><a href="tools/bash.html"><strong aria-hidden="true">1.2.</strong> bash</a></li><li class="expanded "><a href="tools/fish.html"><strong aria-hidden="true">1.3.</strong> fish</a></li><li class="expanded "><a href="tools/tmux.html"><strong aria-hidden="true">1.4.</strong> tmux</a></li><li class="expanded "><a href="tools/git.html"><strong aria-hidden="true">1.5.</strong> git</a></li><li class="expanded "><a href="tools/awk.html"><strong aria-hidden="true">1.6.</strong> awk</a></li><li class="expanded "><a href="tools/emacs.html"><strong aria-hidden="true">1.7.</strong> emacs</a></li><li class="expanded "><a href="tools/gpg.html"><strong aria-hidden="true">1.8.</strong> gpg</a></li><li class="expanded "><a href="tools/gdb.html"><strong aria-hidden="true">1.9.</strong> gdb</a></li><li class="expanded "><a href="tools/gdbserver.html"><strong aria-hidden="true">1.10.</strong> gdbserver</a></li><li class="expanded "><a href="tools/radare2.html"><strong aria-hidden="true">1.11.</strong> radare2</a></li><li class="expanded "><a href="tools/qemu.html"><strong aria-hidden="true">1.12.</strong> qemu</a></li><li class="expanded "><a href="tools/pacman.html"><strong aria-hidden="true">1.13.</strong> pacman</a></li></ol></li><li class="expanded "><a href="monitor/index.html"><strong aria-hidden="true">2.</strong> Resource analysis & monitor</a></li><li><ol class="section"><li class="expanded "><a href="monitor/lsof.html"><strong aria-hidden="true">2.1.</strong> lsof</a></li><li class="expanded "><a href="monitor/ss.html"><strong aria-hidden="true">2.2.</strong> ss</a></li><li class="expanded "><a href="monitor/pidstat.html"><strong aria-hidden="true">2.3.</strong> pidstat</a></li><li class="expanded "><a href="monitor/pgrep.html"><strong aria-hidden="true">2.4.</strong> pgrep</a></li><li class="expanded "><a href="monitor/pmap.html"><strong aria-hidden="true">2.5.</strong> pmap</a></li><li class="expanded "><a href="monitor/pstack.html"><strong aria-hidden="true">2.6.</strong> pstack</a></li></ol></li><li class="expanded "><a href="trace_profile/index.html"><strong aria-hidden="true">3.</strong> Trace and Profile</a></li><li><ol class="section"><li class="expanded "><a href="trace_profile/strace.html"><strong aria-hidden="true">3.1.</strong> strace</a></li><li class="expanded "><a href="trace_profile/ltrace.html"><strong aria-hidden="true">3.2.</strong> ltrace</a></li><li class="expanded "><a href="trace_profile/perf.html"><strong aria-hidden="true">3.3.</strong> perf</a></li><li class="expanded "><a href="trace_profile/oprofile.html"><strong aria-hidden="true">3.4.</strong> OProfile</a></li><li class="expanded "><a href="trace_profile/time.html"><strong aria-hidden="true">3.5.</strong> time</a></li></ol></li><li class="expanded "><a href="binary/index.html"><strong aria-hidden="true">4.</strong> Binary</a></li><li><ol class="section"><li class="expanded "><a href="binary/od.html"><strong aria-hidden="true">4.1.</strong> od</a></li><li class="expanded "><a href="binary/xxd.html"><strong aria-hidden="true">4.2.</strong> xxd</a></li><li class="expanded "><a href="binary/readelf.html"><strong aria-hidden="true">4.3.</strong> readelf</a></li><li class="expanded "><a href="binary/objdump.html"><strong aria-hidden="true">4.4.</strong> objdump</a></li><li class="expanded "><a href="binary/nm.html"><strong aria-hidden="true">4.5.</strong> nm</a></li></ol></li><li class="expanded "><a href="development/index.html"><strong aria-hidden="true">5.</strong> Development</a></li><li><ol class="section"><li class="expanded "><a href="development/c++filt.html"><strong aria-hidden="true">5.1.</strong> c++filt</a></li><li class="expanded "><a href="development/c++.html"><strong aria-hidden="true">5.2.</strong> c++</a></li><li class="expanded "><a href="development/glibc.html"><strong aria-hidden="true">5.3.</strong> glibc</a></li><li class="expanded "><a href="development/gcc.html"><strong aria-hidden="true">5.4.</strong> gcc</a></li><li class="expanded "><a href="development/make.html"><strong aria-hidden="true">5.5.</strong> make</a></li><li class="expanded "><a href="development/ld.so.html"><strong aria-hidden="true">5.6.</strong> ld.so</a></li><li class="expanded "><a href="development/symbolver.html"><strong aria-hidden="true">5.7.</strong> symbol versioning</a></li><li class="expanded "><a href="development/python.html"><strong aria-hidden="true">5.8.</strong> python</a></li></ol></li><li class="expanded "><a href="linux/index.html"><strong aria-hidden="true">6.</strong> Linux</a></li><li><ol class="section"><li class="expanded "><a href="linux/systemd.html"><strong aria-hidden="true">6.1.</strong> systemd</a></li><li class="expanded "><a href="linux/coredump.html"><strong aria-hidden="true">6.2.</strong> coredump</a></li><li class="expanded "><a href="linux/ptrace_scope.html"><strong aria-hidden="true">6.3.</strong> ptrace_scope</a></li></ol></li><li class="expanded "><a href="network/index.html"><strong aria-hidden="true">7.</strong> Network</a></li><li><ol class="section"><li class="expanded "><a href="network/tcpdump.html"><strong aria-hidden="true">7.1.</strong> tcpdump</a></li></ol></li><li class="expanded "><a href="arch/index.html"><strong aria-hidden="true">8.</strong> Arch</a></li><li><ol class="section"><li class="expanded "><a href="arch/x86_64.html"><strong aria-hidden="true">8.1.</strong> x86_64</a></li><li class="expanded "><a href="arch/arm64.html"><strong aria-hidden="true">8.2.</strong> arm64</a></li><li class="expanded "><a href="arch/armv7.html"><strong aria-hidden="true">8.3.</strong> armv7</a></li><li class="expanded "><a href="arch/riscv.html"><strong aria-hidden="true">8.4.</strong> riscv</a></li></ol></li></ol> </div> <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div> </nav> @@ -1747,6 +1747,22 @@ gdb -ex 'target remote localhost:1234' <pre><code class="language-markdown"> > r2 -B <baddr> <exe> # open <exe> mapped to addr <baddr> oob <addr> # reopen current file at <baddr> </code></pre> +<h1><a class="header" href="#examples-2" id="examples-2">Examples</a></h1> +<h2><a class="header" href="#patch-file-alter-bytes" id="patch-file-alter-bytes">Patch file (alter bytes)</a></h2> +<pre><code class="language-markdown"> > r2 [-w] <file> + oo+ # re-open for write if -w was not passed + s <addr> # seek to position + wv <data> # write 4 byte (dword) +</code></pre> +<h2><a class="header" href="#assemble--disassmble-rasm2" id="assemble--disassmble-rasm2">Assemble / Disassmble (rasm2)</a></h2> +<pre><code class="language-markdown"> rasm2 -L # list supported archs + + > rasm2 -a x86 'mov eax, 0xdeadbeef' + b8efbeadde + + > rasm2 -a x86 -d "b8efbeadde" + mov eax, 0xdeadbeef +</code></pre> <h1><a class="header" href="#qemu1" id="qemu1">qemu(1)</a></h1> <p>All the examples & notes use <code>qemu-system-x86_64</code> but in most cases this can be swapped with the system emulator for other architectures.</p> @@ -2043,7 +2059,7 @@ package and sort by size.</p> -s states (UDP) Unbound, Idle </code></pre> -<h1><a class="header" href="#examples-2" id="examples-2">Examples</a></h1> +<h1><a class="header" href="#examples-3" id="examples-3">Examples</a></h1> <h2><a class="header" href="#file-flags" id="file-flags">File flags</a></h2> <p>Show open files with file flags for process:</p> <pre><code class="language-markdown">lsof +fg -p <pid> @@ -2085,7 +2101,7 @@ package and sort by size.</p> (EXPR) .............. Group exprs </code></pre> -<h1><a class="header" href="#examples-3" id="examples-3">Examples</a></h1> +<h1><a class="header" href="#examples-4" id="examples-4">Examples</a></h1> <p>Show all tcp IPv4 sockets connecting to port <code>443</code>:</p> <pre><code class="language-markdown">ss -4 'dport 443' </code></pre> @@ -2164,7 +2180,7 @@ major_pagefault: Happens when the page needed is NOT in memory, the kernel trace=signal ............... trace signal related syscalls signal ..................... trace signals delivered to the process </code></pre> -<h1><a class="header" href="#examples-4" id="examples-4">Examples</a></h1> +<h1><a class="header" href="#examples-5" id="examples-5">Examples</a></h1> <p>Trace <code>open(2)</code> & <code>socket(2)</code> syscalls for a running process + child processes:</p> <pre><code class="language-markdown">strace -f -e trace=open,socket -p <pid> </code></pre> @@ -2416,6 +2432,8 @@ LD_PRELOAD=./libmtrace.so <binary> <ul> <li><code>-E</code> run only preprocessor</li> <li><code>-dM</code> list only <code>#define</code> statements</li> +<li><code>-###</code> dry-run, outputting exact compiler/linker invocations</li> +<li><code>-print-multi-lib</code> print available multilib configurations</li> </ul> <h3><a class="header" href="#target-options" id="target-options">Target options</a></h3> <pre><code class="language-bash"># List all target options with their description. @@ -3147,7 +3165,7 @@ tcp/udp/icmp Filter for protocol. <blockquote> <p>Use <code>and/or/not</code> and <code>()</code> to build filter expressions.</p> </blockquote> -<h1><a class="header" href="#examples-5" id="examples-5">Examples</a></h1> +<h1><a class="header" href="#examples-6" id="examples-6">Examples</a></h1> <h2><a class="header" href="#capture-packets-from-remote-host" id="capture-packets-from-remote-host">Capture packets from remote host</a></h2> <pre><code class="language-makrdown"># -k: Start capturing immediately. ssh <host> tcpdump -i <IF> -w - | sudo wireshark -k -i - @@ -3157,6 +3175,7 @@ ssh <host> tcpdump -i <IF> -w - | sudo wireshark -k -i - <li><a href="arch/./x86_64.html">x86_64</a></li> <li><a href="arch/./arm64.html">arm64</a></li> <li><a href="arch/./armv7.html">armv7</a></li> +<li><a href="arch/./riscv.html">riscv</a></li> </ul> <h1><a class="header" href="#x86_64" id="x86_64">x86_64</a></h1> <p>keywords: x86_64, x86, abi</p> @@ -3893,6 +3912,83 @@ required when compiling natively on arm.</p> <li><a href="https://sourceware.org/binutils/docs/as/Pseudo-Ops.html#Pseudo-Ops">GNU Assembler Directives</a></li> <li><a href="https://sourceware.org/binutils/docs/as/ARM_002dDependent.html">GNU Assembler <code>ARM</code> dependent features</a></li> </ul> +<h1><a class="header" href="#riscv" id="riscv">riscv</a></h1> +<p>keywords: rv32, rv64</p> +<ul> +<li>ISA type: <code>RISC</code></li> +<li>Endianness: <code>little</code>, <code>big</code></li> +</ul> +<h2><a class="header" href="#registers-3" id="registers-3">Registers</a></h2> +<ul> +<li>riscv32 => <code>XLEN=32</code></li> +<li>riscv64 => <code>XLEN=64</code></li> +</ul> +<h3><a class="header" href="#general-purpose-registers-2" id="general-purpose-registers-2">General purpose registers</a></h3> +<pre><code class="language-markdown">[XLEN-1:0] abi name desc +--------------------------------------------- +x0 zero zero register +x1 ra return addr +x2 sp stack ptr +x3 gp global ptr +x4 tp thread ptr +x5-x7 t0-t2 temp regs +x8-x9 s0-s1 saved regs +x10-x17 a0-a7 arg regs +x18-x27 s2-s11 saved regs +x28-x31 t3-t6 temp regs +</code></pre> +<h2><a class="header" href="#asm-skeleton-3" id="asm-skeleton-3">ASM skeleton</a></h2> +<p>Small assembler skeleton, ready to use with following properties:</p> +<ul> +<li>use raw Linux syscalls (<code>man 2 syscall</code> for ABI)</li> +<li>no <code>C runtime (crt)</code></li> +<li>gnu assembler <a href="https://sourceware.org/binutils/docs/as"><code>gas</code></a></li> +</ul> +<pre><code class="language-mipsasm">// file: greet.S + +#include <asm/unistd.h> // syscall NRs + + .section .text, "ax", @progbits + .balign 4 // align code on 4byte boundary + .global _start +_start: + li a0, 2 // fd + la a1, greeting // buf + ld a2, (greeting_len) // &len + li a7, __NR_write // write(2) syscall + ecall + + li a0, 42 // exit code + li a7, __NR_exit // exit(2) syscall + ecall + + .balign 8 // align data on 8byte boundary + .section .rodata, "a", @progbits +greeting: + .asciz "Hi ASM-World!\n" +greeting_len: + .int .-greeting +</code></pre> +<blockquote> +<p>man gcc: <code>file.S</code> assembler code that must be preprocessed.</p> +</blockquote> +<p>To cross-compile and run:</p> +<pre><code class="language-bash">> riscv64-linux-gnu-gcc -o greet greet.S -nostartfiles -nostdlib \ + -Wl,--dynamic-linker=/usr/riscv64-linux-gnu/lib/ld-linux-riscv64-lp64d.so.1 \ + && qemu-riscv64 ./greet +Hi ASM-World! +</code></pre> +<blockquote> +<p>Cross-compiling on <code>Ubuntu 20.04 (x86_64)</code>, paths might differ on other +distributions. Explicitly specifying the dynamic linker should not be +required when compiling natively on riscv.</p> +<p>Select dynamic linker according to abi used during compile & link.</p> +</blockquote> +<h2><a class="header" href="#references-6" id="references-6">References</a></h2> +<ul> +<li><a href="https://sourceware.org/binutils/docs/as">GNU Assembler</a></li> +<li><a href="https://sourceware.org/binutils/docs/as/Pseudo-Ops.html#Pseudo-Ops">GNU Assembler Directives</a></li> +</ul> </main> |