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Introduce native support for MacOS ARM64

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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.
This commit is contained in:
Justine Tunney 2023-05-18 19:05:08 -07:00
parent b852650c08
commit 1422e96b4e
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GPG key ID: BE714B4575D6E328
757 changed files with 2988 additions and 1321 deletions
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54
libc/sysv/macros.internal.h
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@ -15,11 +15,11 @@
* risk of slowing down builds too much with complicated headers.
*/
.macro .scall name:req amd:req arm:req kw1 kw2
.macro .scall name:req amd:req arm_linux:req arm_xnu:req kw1 kw2
.section .text.syscall,"ax",@progbits
#ifdef __x86_64__
.ifnb \kw2
.align 16
.balign 16
\name: movabs $\amd,%rax
jmp *__systemfive(%rip)
.else
@ -31,20 +31,56 @@
pop %rbp
ret
.endif
.endfn \name,\kw1,\kw2
#elif defined(__aarch64__)
\name:
.ifc \arm,0xfff
mov x0,#-38 // -ENOSYS
.ifc \arm_linux,4095
.ifc \arm_xnu,4095
// return enosys();
\name: b enosys
.endfn \name,\kw1,\kw2
.else
mov x8,#\arm
svc #0
.endif
// return IsXnu() ? syscall(x16, ...) : syscall(x8, ...);
\name: adrp x9,__hostos
ldr w9,[x9,#:lo12:__hostos]
tbz x9,#3,1f // !IsXnu()
mov x16,#\arm_xnu // apple ordinal
svc #0 // issue system call
bcs 1f
b _sysret
1: neg x0,x0
b _sysret
.hidden _sysret
.endfn \name,\kw1,\kw2
.endif
.else
.ifc \arm_xnu,4095
// return IsLinux() ? syscall(x8, ...) : enosys();
\name: adrp x9,__hostos
ldr w9,[x9,#:lo12:__hostos]
tbz x9,#0,1f // !IsLinux()
mov x8,#\arm_linux // systemd ordinal
svc #0 // issue system call
mov x1,#\arm_linux
b _sysret
.hidden _sysret
1: b enosys
.endfn \name,\kw1,\kw2
.else
\name: mov x16,#\arm_xnu // apple ordinal
mov x8,#\arm_linux // systemd ordinal
eor x9,x9,x9 // clear carry flag
svc #0 // issue system call
bcs 1f
b _sysret
1: neg x0,x0
b _sysret
.hidden _sysret
.endfn \name,\kw1,\kw2
.endif
.endif
#else
#error "architecture unsupported"
#endif
.endfn \name,\kw1,\kw2
.previous
.endm