nasm/misc/altreg.inc
H. Peter Anvin e55c836b5a Document naming of registers in 64-bit mode
Intel's docs diverge from AMD's docs (MASM follow AMD's docs);
formally document what we're doing and include a file of macros in
case someone wants to use alternate names.
2007-12-10 15:35:28 -08:00

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;;
;; altreg.inc
;;
;; Alternate register names for 64-bit mode
;;
;;
;; Intel documents R8L-R15L instead of R8B-R15B
;; (Warning: this may confuse people with an AT&T-style assembly
;; background, where "r8l" means R8D, etc.)
;;
%idefine r8l r8b
%idefine r9l r9b
%idefine r10l r10b
%idefine r11l r11b
%idefine r12l r12b
%idefine r13l r13b
%idefine r14l r14b
%idefine r15l r15b
;;
;; Numeric register names for the lower 8 registers
;;
%idefine r0 rax
%idefine r1 rcx
%idefine r2 rdx
%idefine r3 rbx
%idefine r4 rsp
%idefine r5 rbp
%idefine r6 rsi
%idefine r7 rdi
%idefine r0d eax
%idefine r1d ecx
%idefine r2d edx
%idefine r3d ebx
%idefine r4d esp
%idefine r5d ebp
%idefine r6d esi
%idefine r7d edi
%idefine r0w ax
%idefine r1w cx
%idefine r2w dx
%idefine r3w bx
%idefine r4w sp
%idefine r5w bp
%idefine r6w si
%idefine r7w di
%idefine r0b al
%idefine r1b cl
%idefine r2b dl
%idefine r3b bl
%idefine r4b spl
%idefine r5b bpl
%idefine r6b sil
%idefine r7b dil
%idefine r0l al
%idefine r1l cl
%idefine r2l dl
%idefine r3l bl
%idefine r4l spl
%idefine r5l bpl
%idefine r6l sil
%idefine r7l dil