Angus Holder angusholder

GSBASE and FSBASE

When you're running out of registers while writing a JIT, you might resort to more unconventional methods for memory access. You might choose to resort to segment registers if you need a fixed register for memory offsets.

Instructions such as:

lea    rax,gs:[rcx+rdx*8]
mov    rax,gs:[rcx+rdx*8]

would then be available for your use.

Data structures

typedef struct {
    uint32_t ch_version;
    uint16_t ch_index;
    uint8_t ch_counter;
    uint8_t ch_oparg;
} HotPyVersionAndCounters;

Interceptors Are Functions Too

I could not agree more with my colleague and friend Travis Johnson's opinion that "[INTERCEPTORS ARE SO COOL][iasc]!" In that post, he succinctly describes the [Interceptor pattern][pattern] as used adroitly by [OkHttp][okhttp]. But, as is often the case, I believe a complicated object-oriented pattern obscures the simple functional gem within it.

What is an Interceptor?

I'll quote liberally from [OkHttp's documentation on the topic][okhttp-interceptor]:

Interceptors are a powerful mechanism that can monitor, rewrite, and retry calls. […] >

	http://courses.cms.caltech.edu/cs179/
	http://www.amd.com/Documents/GCN_Architecture_whitepaper.pdf
	https://community.arm.com/graphics/b/blog
	http://cdn.imgtec.com/sdk-documentation/PowerVR+Hardware.Architecture+Overview+for+Developers.pdf
	http://cdn.imgtec.com/sdk-documentation/PowerVR+Series5.Architecture+Guide+for+Developers.pdf
	https://www.imgtec.com/blog/a-look-at-the-powervr-graphics-architecture-tile-based-rendering/
	https://www.imgtec.com/blog/the-dr-in-tbdr-deferred-rendering-in-rogue/
	http://developer.amd.com/tools-and-sdks/opencl-zone/amd-accelerated-parallel-processing-app-sdk/opencl-optimization-guide/#50401334_pgfId-412605
	https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/
	https://community.arm.com/graphics/b/documents/posts/moving-mobile-graphics#siggraph2015

	#!/usr/bin/env bash
	mariabackup --stream=xbstream --backup --user root\|pigz >mariadb-backup.gz