preproc: add support for builtin include modules (%use)

Add a builtin equivalent to the %include directive called %use.
%use includes a standard macro file compiled into the binary; these
come from the macros/ directory in the source code.

The idea here is to be able to provide optional macro packages with
the distribution, without adding complex host filesystem dependencies.

1 files changed, 74 insertions, 0 deletions

diff --git a/macros/altreg.mac b/macros/altreg.mac
new file mode 100644
index 0000000..83d6967
--- /dev/null
+++ b/macros/altreg.mac
@@ -0,0 +1,74 @@
+;;
+;; altreg.mac
+;;
+;; Alternate register names for 64-bit mode
+;;
+
+USE: altreg
+
+;;
+;; 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
+
+%idefine r0h ah
+%idefine r1h ch
+%idefine r2h dh
+%idefine r3h bh