mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-01 18:22:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Delete some dead code

Browse source
This commit is contained in:
Justine Tunney 2024-01-01 00:11:45 -08:00
parent 9e6faa5256
commit 2f89c2482a
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
12 changed files with 0 additions and 505 deletions
Download patch file Download diff file Expand all files Collapse all files

113
ape/macros.internal.h
View file

@ -22,119 +22,6 @@
#ifdef __ASSEMBLER__
/* clang-format off */
/**
* @fileoverview Macros relevant to αcτµαlly pδrταblε εxεcµταblε.
*/
// Calls near (i.e. pc+pcrel<64kB) FUNCTION.
// @mode long,legacy,real
// @cost 9 bytes overhead
.macro rlcall function:req
.byte 0x50 # push %[er]ax
.byte 0xb8,0,0 # mov $?,%[e]ax
jmp 911f
.byte 0x58 # pop %[er]ax
.byte 0xe8 # call Jvds
.long \function\()-.-4
jmp 912f
911: .byte 0x58 # pop %[er]ax
.byte 0xe8 # call Jvds
.short \function\()-.-2
912:
.endm
// Loads far (i.e. <1mb) abs constexpr ADDRESS into ES:DI+EDX+RDX.
// @mode long,legacy,real
.macro movesdi address:req
.byte 0xbf # mov $0x????xxxx,%[e]di
.short \address>>4
.byte 0x8e,0xc7 # mov %di,%es
.byte 0xbf # mov $0x????xxxx,%[e]di
.short \address&0xf
jmp 297f
.byte 0xbf # mov $0x????xxxx,%edi
.long \address
297:
.endm
// Loads 16-bit CONSTEXPR into Qw-register w/ optional zero-extend.
// @mode long,legacy,real
.macro bbmov constexpr:req abcd abcd.hi:req abcd.lo:req
.ifnb \abcd
.if (\constexpr)<128 && (\constexpr)>=0
pushpop \constexpr,\abcd
.exitm
.endif
.endif
movb $(\constexpr)>>8&0xff,\abcd.hi
movb $(\constexpr)&0xff,\abcd.lo
.endm
// Compares 16-bit CONSTEXPR with Qw-register.
// @mode long,legacy,real
.macro bbcmp constexpr:req abcd.hi:req abcd.lo:req
cmpb $(\constexpr)>>8&0xff,\abcd.hi
jnz 387f
cmpb $(\constexpr)&0xff,\abcd.lo
387:
.endm
// Adds 16-bit CONSTEXPR to Qw-register.
// @mode long,legacy,real
.macro bbadd constexpr:req abcd.hi:req abcd.lo:req
addb $(\constexpr)&0xff,\abcd.lo
.if (\constexpr) != 0
adcb $(\constexpr)>>8&0xff,\abcd.hi
.endif
.endm
// Subtracts 16-bit CONSTEXPR from Qw-register.
// @mode long,legacy,real
.macro bbsub constexpr:req abcd.hi:req abcd.lo:req
subb $(\constexpr)&0xff,\abcd.lo
.if (\constexpr) != 0
sbbb $(\constexpr)>>8&0xff,\abcd.hi
.endif
.endm
// Ands Qw-register with 16-bit CONSTEXPR.
// @mode long,legacy,real
.macro bband constexpr:req abcd.hi:req abcd.lo:req
.if ((\constexpr)&0xff) != 0xff || ((\constexpr)>>8&0xff) == 0xff
andb $(\constexpr)&0xff,\abcd.lo
.endif
.if ((\constexpr)>>8&0xff) != 0xff
andb $(\constexpr)>>8&0xff,\abcd.hi
.endif
.endm
// Ors Qw-register with 16-bit CONSTEXPR.
// @mode long,legacy,real
.macro bbor constexpr:req abcd.hi:req abcd.lo:req
.if ((\constexpr)&0xff) != 0 || ((\constexpr)>>8&0xff) != 0
orb $(\constexpr)&0xff,\abcd.lo
.endif
.if ((\constexpr)>>8&0xff) != 0
orb $(\constexpr)>>8&0xff,\abcd.hi
.endif
.endm
// Performs ACTION only if in real mode.
// @mode long,legacy,real
.macro rlo clobber:req action:vararg
990: mov $0,\clobber
.if .-990b!=3
.error "bad clobber or assembler mode"
.endif
991: \action
.rept 2-(.-991b)
nop
.endr
.if .-991b!=2
.error "ACTION must be 1-2 bytes"
.endif
.endm
// Initializes real mode stack.
// The most holiest of holy code.
// @mode real