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Add x86_64-linux-gnu emulator

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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
This commit is contained in:
Justine Tunney
2020-08-25 04:23:25 -07:00
parent 467504308a
commit f4f4caab0e
1052 changed files with 65667 additions and 7825 deletions
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2
libc/nexgen32e/x86feature.h
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@@ -72,6 +72,7 @@
#define X86_INVPCID 1H, EBX, 10, 0, _
#define X86_INVTSC 80000007H, EDX, 8, _X86_CC_POPCNT, _ /* i.e. not a K8 */
#define X86_LA57 7H, ECX, 16, 0, _
#define X86_LAHF_LM 80000001H, ECX, 0, 0, _
#define X86_LM 80000001H, EDX, 29, 0, _
#define X86_MCA 1H, EDX, 14, 0, _
#define X86_MCE 1H, EDX, 7, 0, _
@@ -153,7 +154,6 @@
#define X86_FMA4 80000001H, ECX, 16, 0, _
#define X86_FXSR_OPT 80000001H, EDX, 25, 0, _
#define X86_IBS 80000001H, ECX, 10, 0, _
#define X86_LAHF_LM 80000001H, ECX, 0, 0, _
#define X86_LWP 80000001H, ECX, 15, 0, _
#define X86_MISALIGNSSE 80000001H, ECX, 7, 0, _
#define X86_MMXEXT 80000001H, EDX, 22, 0, _