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Add NetBSD Support (#2661)

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* Add NetBSD Support

Includes:
- Hints to find non-compatibility libc functions
- Struct and constant definitions for sockets, polling, etc.
- Changes to the linker code to work around some quirks in the NetBSD dynamic linker
- A target triple for netbsd aarch64 so llvm builds/links the compiler properly on this platform

* Updated releasenotes and some compacting

---------

Co-authored-by: Christoffer Lerno <christoffer@aegik.com>
This commit is contained in:
limit-ordinal
2025-12-19 13:23:06 -05:00
committed by GitHub
parent bf26898645
commit 85166bc706
21 changed files with 398 additions and 38 deletions
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2
lib/std/os/posix/clock.c3
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@@ -1,7 +1,7 @@
module std::os::posix @if(env::POSIX);
import libc;
extern fn CInt clock_gettime(int type, TimeSpec *time);
extern fn CInt clock_gettime(int type, TimeSpec *time) @cname(env::NETBSD ??? "__clock_gettime50" : "clock_gettime");
module std::os::posix @if(env::OPENBSD);
const CLOCK_REALTIME = 0;

15
lib/std/os/posix/files.c3
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@@ -32,9 +32,9 @@ extern fn ZString getcwd(char* pwd, usz len);
extern fn CInt pipe(CInt[2]* pipes);
extern fn CFile fdopen(CInt fd, ZString mode);
extern fn CInt access(ZString path, CInt mode);
extern fn Posix_dirent* readdir(DIRPtr) @cname("readdir") @if(!USE_DARWIN_INODE64) ;
extern fn DIRPtr opendir(ZString);
extern fn void closedir(DIRPtr);
extern fn Posix_dirent* readdir(DIRPtr) @cname(readdir_cname());
extern fn DIRPtr opendir(ZString) @cname(env::NETBSD ??? "__opendir30" : "opendir");
const DT_UNKNOWN = 0;
const DT_FIFO = 1;
@@ -46,5 +46,12 @@ const DT_LNK = 10;
const DT_SOCK = 12;
const DT_WHT = 14;
const USE_DARWIN_INODE64 = env::DARWIN && env::X86_64;
extern fn Posix_dirent* readdir(DIRPtr) @cname("readdir$INODE64") @if(USE_DARWIN_INODE64);
macro String readdir_cname() @local @const
{
$switch:
$case env::DARWIN && env::X86_64: return "readdir$INODE64";
$case env::NETBSD: return "__readdir30";
$default: return "readdir";
$endswitch
}

4
lib/std/os/posix/process.c3
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@@ -58,7 +58,7 @@ const CInt WUNTRACES = 2;
JmpBuf backtrace_jmpbuf @local;
alias BacktraceFn = fn CInt(void** buffer, CInt size);
extern fn CInt backtrace(void** buffer, CInt size) @if(env::OPENBSD);
extern fn CInt backtrace(void** buffer, CInt size) @if(env::OPENBSD || env::NETBSD);
fn void install_signal_handler(CInt signal, SigActionFunction func)
{
@@ -69,7 +69,7 @@ fn void install_signal_handler(CInt signal, SigActionFunction func)
libc::sigaction(signal, &action, &old);
}
fn CInt backtrace(void** buffer, CInt size) @if(!env::OPENBSD)
fn CInt backtrace(void** buffer, CInt size) @if(!env::OPENBSD && !env::NETBSD)
{
if (size < 1) return 0;
void* handle = libc::dlopen("libc.so.6", libc::RTLD_LAZY|libc::RTLD_NODELETE);