ea0b5d9d1c
A new rollup tool now exists for flattening out the headers in a way that works better for our purposes than cpp. A lot of the API clutter has been removed. APIs that aren't a sure thing in terms of general recommendation are now marked internal. There's now a smoke test for the amalgamation archive and gigantic header file. So we can now guarantee you can use this project on the easiest difficulty setting without the gigantic repository. A website is being created, which is currently a work in progress: https://justine.storage.googleapis.com/cosmopolitan/index.html
72 lines
1.5 KiB
PHP
72 lines
1.5 KiB
PHP
#include "libc/nexgen32e/x86feature.h"
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#include "libc/macros.h"
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/ Broadcast byte literal to vector, e.g.
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/
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/ # xmm0=0x12121212121212121212121212121212
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/ .bcblit $0x12,%al,%eax,%xmm0
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/
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/ @param reg and regSI need to be the same register
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.macro .bcblit lit:req reg:req regSI:req xmm:req
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mov \lit,\reg
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movd \regSI,\xmm
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pbroadcastb \xmm
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.endm
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/ Broadcast word literal to vector, e.g.
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/
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/ # xmm0=0x01230123012301230123012301230123
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/ .bcwlit $0x123,%ax,%eax,%xmm0
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/
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/ @param reg and regSI need to be the same register
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.macro .bcwlit lit:req reg:req regSI:req xmm:req
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mov \lit,\reg
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movd \regSI,\xmm
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pbroadcastw \xmm
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.endm
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/ Broadcast int16 from register to vector.
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.macro .bcwreg regSI:req xmm:req
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movd \regSI,\xmm
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pbroadcastw \xmm
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.endm
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/ Sets all bytes in XMM register to first byte, e.g.
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/
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/ mov $0x11,%eax
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/ movd %eax,%xmm0
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/ pbroadcastb %xmm0
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/
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/ 11000000000000000000000000000000
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/ → 11111111111111111111111111111111
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/
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/ @param xmm can be %xmm0,%xmm1,etc.
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.macro pbroadcastb xmm:req
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#if X86_NEED(AVX2)
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vpbroadcastb \xmm,\xmm
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#else
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punpcklbw \xmm,\xmm
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punpcklwd \xmm,\xmm
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pshufd $0,\xmm,\xmm
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#endif
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.endm
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/ Sets all words in XMM register to first word, e.g.
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/
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/ mov $0x1234,%eax
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/ movd %eax,%xmm0
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/ pbroadcastw %xmm0
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/
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/ 12340000000000000000000000000000
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/ → 12341234123412341234123412341234
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/
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/ @param xmm can be %xmm0,%xmm1,etc.
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.macro pbroadcastw xmm:req
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#if X86_NEED(AVX2)
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vpbroadcastw \xmm,\xmm
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#else
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punpcklwd \xmm,\xmm
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pshufd $0,\xmm,\xmm
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#endif
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.endm
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