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https://github.com/jart/cosmopolitan.git
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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
82 lines
4.5 KiB
C
82 lines
4.5 KiB
C
#ifndef COSMOPOLITAN_LIBC_INTRIN_MACROS_H_
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#define COSMOPOLITAN_LIBC_INTRIN_MACROS_H_
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#include "libc/dce.h"
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#include "libc/nexgen32e/x86feature.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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#define INTRIN_COMMUTATIVE "%"
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#define INTRIN_NONCOMMUTATIVE
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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typedef char __intrin_xmm_t _Vector_size(16) aligned(16) mayalias;
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#define INTRIN_SSEVEX_X_X_X_(PURE, ISA, OP, FLAGS, A, B, C) \
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do { \
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if (!IsModeDbg() && X86_HAVE(ISA)) { \
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__intrin_xmm_t *Xmm0 = (void *)(A); \
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const __intrin_xmm_t *Xmm1 = (const __intrin_xmm_t *)(B); \
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const __intrin_xmm_t *Xmm2 = (const __intrin_xmm_t *)(C); \
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if (!X86_NEED(AVX)) { \
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asm(OP "\t%1,%0" : "=x"(*Xmm0) : FLAGS "x"(*Xmm2), "0"(*Xmm1)); \
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} else { \
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asm("v" OP "\t%2,%1,%0" : "=x"(*Xmm0) : FLAGS "x"(*Xmm1), "x"(*Xmm2)); \
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} \
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} else { \
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PURE(A, B, C); \
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} \
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} while (0)
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#define INTRIN_SSEVEX_X_X_I_(PURE, ISA, OP, A, B, I) \
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do { \
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if (!IsModeDbg() && X86_HAVE(ISA)) { \
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__intrin_xmm_t *Xmm0 = (void *)(A); \
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const __intrin_xmm_t *Xmm1 = (const __intrin_xmm_t *)(B); \
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if (!X86_NEED(AVX)) { \
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asm(OP "\t%2,%1,%0" : "=x"(*Xmm0) : "x"(*Xmm1), "i"(I)); \
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} else { \
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asm("v" OP "\t%2,%1,%0" : "=x"(*Xmm0) : "x"(*Xmm1), "i"(I)); \
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} \
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} else { \
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PURE(A, B, I); \
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} \
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} while (0)
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#define INTRIN_SSEVEX_X_X_(PURE, ISA, OP, A, B) \
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do { \
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if (!IsModeDbg() && X86_HAVE(ISA)) { \
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__intrin_xmm_t *Xmm0 = (void *)(A); \
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const __intrin_xmm_t *Xmm1 = (const __intrin_xmm_t *)(B); \
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if (!X86_NEED(AVX)) { \
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asm(OP "\t%1,%0" : "=x"(*Xmm0) : "0"(*Xmm1)); \
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} else { \
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asm("v" OP "\t%1,%0" : "=x"(*Xmm0) : "x"(*Xmm1)); \
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} \
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} else { \
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PURE(A, B); \
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} \
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} while (0)
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#define INTRIN_SSEVEX_X_I_(PURE, ISA, OP, A, B, I) \
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do { \
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if (!IsModeDbg() && X86_HAVE(ISA)) { \
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__intrin_xmm_t *Xmm0 = (void *)(A); \
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const __intrin_xmm_t *Xmm1 = (const __intrin_xmm_t *)(B); \
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if (!X86_NEED(AVX)) { \
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asm(OP "\t%1,%0" : "=x"(*Xmm0) : "i"(I), "0"(*Xmm1)); \
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} else { \
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asm("v" OP "\t%2,%1,%0" : "=x"(*Xmm0) : "x"(*Xmm1), "i"(I)); \
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} \
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} else { \
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PURE(A, B, I); \
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} \
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} while (0)
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#else
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#define INTRIN_SSEVEX_X_X_X_(PURE, ISA, OP, FLAGS, A, B, C) PURE(A, B, C)
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#define INTRIN_SSEVEX_X_X_I_(PURE, ISA, OP, A, B, I) PURE(A, B, I)
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#define INTRIN_SSEVEX_X_I_(PURE, ISA, OP, A, B, I) PURE(A, B, I)
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#endif /* X86 && !ANSI */
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_INTRIN_MACROS_H_ */
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