How are system calls made?

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#1

How do you do this in LLVM?

open:
    push    dword mode
    push    dword flags
    push    dword path
    mov eax, 5
    push    eax     ; Or any other dword
    int 80h
    add esp, byte 16
#2

Same as in C: either with inline assembly, or by calling syscall(2).

Chip

#3

Do you inline assembly with the “module asm” instruction?

#4

Do you inline assembly with the "module asm" instruction?

No, with inline asm: http://llvm.org/docs/LangRef.html#inlineasm

Ciao, Duncan.