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;; abi definition file
;; macros:
;; * sys: syscall64 wrapper
;; * ccall: automatically generate code to call a C function
;; with any number of arguments
; syscall ops
%define sys.call syscall
; syscall numbers
%define sys.write 1
%define sys.brk 12
%define sys.exit 60
; register order for syscall convention
%define sys.reg.0 rax
%define sys.reg.1 rdi
%define sys.reg.2 rsi
%define sys.reg.3 rdx
%define sys.reg.4 r10
%define sys.reg.5 r8
%define sys.reg.6 r9
................................................................................
%define ccall.reg.1 rsi
%define ccall.reg.2 rdx
%define ccall.reg.3 rcx
%define ccall.reg.4 r8
%define ccall.reg.5 r9
%macro sys 1-8
%assign i 0
%rep %0
mov sys.reg. %+ i, %1 ; i'm actually shocked this worked
%rotate 1
%assign i i+1
%endrep
syscall
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;; abi definition file for x86 linux 64-bit
; vim: ft=nasm
; syscall64 numbers - syscall table must be created first!
%include "calls.x86.lin.64.s"
; syscall ops
%define sys.call syscall
; register order for syscall convention
%define sys.reg.n 7
%define sys.reg.0 rax
%define sys.reg.1 rdi
%define sys.reg.2 rsi
%define sys.reg.3 rdx
%define sys.reg.4 r10
%define sys.reg.5 r8
%define sys.reg.6 r9
................................................................................
%define ccall.reg.1 rsi
%define ccall.reg.2 rdx
%define ccall.reg.3 rcx
%define ccall.reg.4 r8
%define ccall.reg.5 r9
%macro sys 1-8
; syscall64 wrapper, ex. `sys sys.write, 1, msg, msg.len`
%assign i 0
%rep %0
mov sys.reg. %+ i, %1 ; i'm actually shocked this worked
%rotate 1
%assign i i+1
%endrep
syscall
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