{"id":13430,"date":"2022-09-04T18:50:37","date_gmt":"2022-09-04T18:50:37","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=13430"},"modified":"2022-09-04T19:31:51","modified_gmt":"2022-09-04T19:31:51","slug":"raspberry-pi-bare-metal","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=13430","title":{"rendered":"Raspberry Pi Bare-Metal"},"content":{"rendered":"

<\/p>\n\n

Low Level Learning<\/h1>\n\n\n\n\n
\"\"<\/a><\/td>\n<\/tr>\n
\"\"<\/a><\/td>\n<\/tr>\n
\"\"<\/a><\/td>\n<\/tr>\n<\/table>\n\n\n
EORccS Rn, Rm, Op2<\/code><\/td>\nLogically Exclusive OR Op2<\/code> with Rm<\/code> and store the result in Rn<\/code>.<\/td>\nEOR R0,R0,#4<\/code><\/tr>\n<\/tr>\n<\/table>\n

EOR<\/code> keeps dependencies, so it can’t be executed out of order on a CPU that can OoO execute the mov<\/code> from xzr<\/code><\/p><\/blockquote>\n

\r\narm-none-eabi-as start.s -o start.o\r\narm-none-eabi-ld start.o -o kernel.elf\r\narm-none-eabi-objcopy kernel.elf -O binary kernel7.img\r\n<\/pre>\n
\r\ndefault:\r\n  arm-none-eabi-as -o start.o start.s\r\n  arm-none-eabi-gcc -c -o main.o main.c -I .\/include\r\n  arm-none-eabi-gcc -T linker.ld -o kernel7.elf start.o main.o -ffreestanding -O2 -nostdlib -lgcc\r\n  arm-none-eabi-objcopy kernel7.elf -O binary kernel7.img\r\n<\/pre>\n
github.com\/lowlevellearning\/raspberry-pi-baremetal<\/a>
\ngithub.com\/lowlevellearning\/raspberry-pi-baremetal-c<\/a><\/p>\n
The TWO Programming Languages EVERY Beginner Should Start With (to learn how to code fast)<\/a>, C and Python
\nBaremetal Assembly Raspberry Pi Programming | Direct to Register Blink LED, No Operating System<\/a>
\nRaspberry Pi C\/C++ Baremetal Programming | Using C to Direct-Register Control Your Raspberry Pi<\/a>
\nBAREMETAL RUST Runs on EVERYTHING, Including the Raspberry Pi | Embedded Rust Tutorial<\/a><\/p>\n
<\/p>\n\n
Azeria Labs<\/h1>\n
LinkedIn<\/a><\/p>\n
ARM Assembly Basics<\/p>\n
    \n
  1. Writing ARM Assembly<\/li>\n
  2. ARM Data Types and Registers<\/li>\n
  3. ARM Instruction set<\/li>\n
  4. Memory Instructions: Load and Store<\/li>\n
  5. Load and Store Multiple<\/li>\n
  6. Conditional Execution and Branching<\/li>\n
  7. Stack and Functions<\/li>\n
  8. Assembly Basics Cheatsheet<\/li>\n<\/ol>\n
    INTRODUCTION TO ARM ASSEMBLY BASICS<\/a>
    \n    DATA TYPES<\/a>
    \n    ARM & THUMB<\/a>
    \n    MEMORY INSTRUCTIONS: LOAD AND STORE<\/a>
    \n    LOAD\/STORE MULTIPLE<\/a>
    \n    CONDITIONAL EXECUTION<\/a>
    \n    STACK AND FUNCTIONS\/a>
    \n    ARM ASSEMBLY BASICS CHEATSHEET<\/a><\/p>\n
    ARM Exploit Development<\/p>\n
      \n
    1. Writing ARM Shellcode<\/li>\n
    2. TCP Bind Shell (ARM 32-bit)<\/li>\n
    3. TCP Reverse Shell (ARM 32-bit)<\/li>\n
    4. Process Memory and Memory Corruption<\/li>\n
    5. Stack Overflows (Arm32)<\/li>\n
    6. Return Oriented Programming (Arm32)<\/li>\n
    7. Stack Overflow Challenges<\/li>\n
    8. Process Continuation Shellcode<\/li>\n
    9. Introduction to Glibc Heap (malloc)<\/li>\n
    10. Introduction to Glibc Heap (free, bins)<\/li>\n
    11. Heap Exploit Development (Part 1)<\/li>\n
    12. Heap Overflows and iOS Kernel (Part 2)<\/li>\n
    13. Grooming the iOS Kernel Heap (Part 3)<\/li>\n<\/ol>\n
      INTRODUCTION TO WRITING ARM SHELLCODE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
      Low Level Learning EORccS Rn, Rm, Op2 Logically Exclusive OR Op2 with Rm and store the result in Rn. EOR R0,R0,#4 EOR keeps dependencies, so it can’t be executed out of order on a CPU that can OoO execute the mov from xzr arm-none-eabi-as start.s -o start.o arm-none-eabi-ld start.o -o kernel.elf arm-none-eabi-objcopy kernel.elf -O binary […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13430","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/13430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13430"}],"version-history":[{"count":11,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/13430\/revisions"}],"predecessor-version":[{"id":13445,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/13430\/revisions\/13445"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}