C
1. C c
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// gcc -O0 -g hello.c
#include <stdio.h>
int main(int argc, char* argv[])
{
printf("hello\n");
return 0;
}
1.1. Syntax
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1.1.1. Statements
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A statement specifies computations to be done for effect; it does not produce a value, as an expression would. In general a statement ends with a semicolon (‘;’), but blocks (which are statements, more or less) are an exception to that rule.
- Duff's Device
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1.1.2. Preprocessor
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- Macros
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CREATED:The C preprocessor is unhygienic (good) and fairly simple (at least compared to C)
1.1.3. Types
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1.2. libc
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1.2.2. nostd
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Information about compiling without libc.
- compile with
gcc -nostdlib -m64(64-bit)
// Tell the compiler incoming stack alignment is not RSP%16==8 or ESP%16==12
__attribute__((force_align_arg_pointer))
void _start() {
/* call main(), etc */
/* exit system call */
// 32-bit
// asm("movl $1,%eax;xorl %ebx,%ebx;int $0x80");
// 64-bit
asm("mov rax,60; mov rdi,0; syscall");
__builtin_unreachable(); // tell the compiler to make sure side effects are done before the asm statement
}
1.3. Articles
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1.4. Libraries
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1.4.1. libjpeg-turbo
1.4.3. libarchive
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CREATED:
C library and command-line tools for reading and writing tar, cpio, zip, ISO, and other archive formats.
2. CPP cpp
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2.1. Libraries
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2.1.2. Adaptagrams graph
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2.2. CUDA nvidia gpu
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3. Objective-C
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