cosmopolitan/libc/sysv/macros.internal.h

#ifndef COSMOPOLITAN_LIBC_SYSV_MACROS_H_
#define COSMOPOLITAN_LIBC_SYSV_MACROS_H_
#include "libc/macros.internal.h"
#ifdef __ASSEMBLER__
/* clang-format off */

/**
 * @fileoverview System Five jump slot generator.
 *
 * We need to pass a magic number to the SYSCALL instruction in %rax.
 * That's only possible to do in C using asm() macro wrappers, like in
 * Chromium's "System Call Support" library. This technique is simpler
 * to implement, gains us object-level ABI compatibility, hookability,
 * and the ability to support significantly more functions, without the
 * risk of slowing down builds too much with complicated headers.
 */

.macro	.scall	name:req amd:req arm_linux:req arm_xnu:req kw1 kw2
	.section .text.syscall,"ax",@progbits
#ifdef __x86_64__
  .ifnb	\kw2
	.ftrace1
\name:	.ftrace2
	movabs	$\amd,%rax
	jmp	*__systemfive(%rip)
  .else
	.ftrace1
\name:	.ftrace2
	push	%rbp
	mov	%rsp,%rbp
	movabs	$\amd,%rax
	call	*__systemfive(%rip)
	pop	%rbp
	ret
  .endif
	.endfn	\name,\kw1,\kw2
#elif defined(__aarch64__)
	.ftrace1
\name:	.ftrace2
	mov	x8,#\arm_linux
	mov	x16,#\arm_xnu
	b	systemfive
	.endfn	\name,\kw1,\kw2
#else
#error "architecture unsupported"
#endif
	.previous
.endm

/* clang-format on */
#endif /* __ASSEMBLER__ */
#endif /* COSMOPOLITAN_LIBC_SYSV_MACROS_H_ */
Initial import 2020-06-15 14:18:57 +00:00			`#ifndef COSMOPOLITAN_LIBC_SYSV_MACROS_H_`
			`#define COSMOPOLITAN_LIBC_SYSV_MACROS_H_`
Reduce build graph by another 14 percent That's a 37% reduction total from what it was on 2022-05-23. 2022-08-18 02:56:54 +00:00			`#include "libc/macros.internal.h"`
Initial import 2020-06-15 14:18:57 +00:00			`#ifdef __ASSEMBLER__`
			`/* clang-format off */`

			`/**`
			`* @fileoverview System Five jump slot generator.`
			`*`
			`* We need to pass a magic number to the SYSCALL instruction in %rax.`
			`* That's only possible to do in C using asm() macro wrappers, like in`
			`* Chromium's "System Call Support" library. This technique is simpler`
			`* to implement, gains us object-level ABI compatibility, hookability,`
			`* and the ability to support significantly more functions, without the`
			`* risk of slowing down builds too much with complicated headers.`
			`*/`

Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues. 2023-05-19 02:05:08 +00:00			`.macro .scall name:req amd:req arm_linux:req arm_xnu:req kw1 kw2`
Get aarch64 hello world working $ m=aarch64-tiny $ make -j8 m=$m o/$m/tool/hello/hello.com o/third_party/qemu/qemu-aarch64 $ o/third_party/qemu/qemu-aarch64 o/$m/tool/hello/hello.com hello world $ ls -hal o/$m/tool/hello/hello.com -rwxr-xr-x 1 jart jart 4.0K May 9 05:04 o/aarch64-tiny/tool/hello/hello.com 2023-05-09 09:35:05 +00:00			`.section .text.syscall,"ax",@progbits`
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64 2023-05-09 08:56:56 +00:00			`#ifdef __x86_64__`
Initial import 2020-06-15 14:18:57 +00:00			`.ifnb \kw2`
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works. 2023-06-06 06:35:31 +00:00			`.ftrace1`
			`\name: .ftrace2`
			`movabs $\amd,%rax`
Get Cosmopolitan into releasable state 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 2020-11-25 16:19:00 +00:00			`jmp *__systemfive(%rip)`
Initial import 2020-06-15 14:18:57 +00:00			`.else`
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works. 2023-06-06 06:35:31 +00:00			`.ftrace1`
			`\name: .ftrace2`
			`push %rbp`
Initial import 2020-06-15 14:18:57 +00:00			`mov %rsp,%rbp`
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64 2023-05-09 08:56:56 +00:00			`movabs $\amd,%rax`
Get Cosmopolitan into releasable state 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 2020-11-25 16:19:00 +00:00			`call *__systemfive(%rip)`
Initial import 2020-06-15 14:18:57 +00:00			`pop %rbp`
			`ret`
			`.endif`
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues. 2023-05-19 02:05:08 +00:00			`.endfn \name,\kw1,\kw2`
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64 2023-05-09 08:56:56 +00:00			`#elif defined(__aarch64__)`
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works. 2023-06-06 06:35:31 +00:00			`.ftrace1`
			`\name: .ftrace2`
Implement thread cancellation for aarch64 2023-09-07 15:29:16 +00:00			`mov x8,#\arm_linux`
			`mov x16,#\arm_xnu`
			`b systemfive`
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues. 2023-05-19 02:05:08 +00:00			`.endfn \name,\kw1,\kw2`
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64 2023-05-09 08:56:56 +00:00			`#else`
			`#error "architecture unsupported"`
			`#endif`
Initial import 2020-06-15 14:18:57 +00:00			`.previous`
			`.endm`

			`/* clang-format on */`
			`#endif /* __ASSEMBLER__ */`
			`#endif /* COSMOPOLITAN_LIBC_SYSV_MACROS_H_ */`