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aarch64 loader os detection

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Merge branches 'pass-os' and 'cosmo-os' into aarch64-os
This commit is contained in:
Jōshin 2023-12-30 22:46:19 -05:00
commit c5a05f22a2
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2 changed files with 20 additions and 10 deletions
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2
libc/crt/crt.S
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@ -127,7 +127,7 @@ _start:
#if SupportsFreebsd() #if SupportsFreebsd()
// save first arg // save first arg
mov x3,x0 mov x4,x0
#endif #endif
// save original stack pointer // save original stack pointer

26
libc/runtime/cosmo2.c
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@ -79,7 +79,7 @@ static const char *DecodeMagnum(const char *p, long *r) {
} }
wontreturn textstartup void cosmo(long *sp, struct Syslib *m1, char *exename, wontreturn textstartup void cosmo(long *sp, struct Syslib *m1, char *exename,
long *is_freebsd) { int os, long *is_freebsd) {
// get startup timestamp as early as possible // get startup timestamp as early as possible
// its used by --strace and also kprintf() %T // its used by --strace and also kprintf() %T
@ -117,17 +117,27 @@ wontreturn textstartup void cosmo(long *sp, struct Syslib *m1, char *exename,
__program_executable_name = exename; __program_executable_name = exename;
program_invocation_name = argv[0]; program_invocation_name = argv[0];
__oldstack = (intptr_t)sp; __oldstack = (intptr_t)sp;
if (!(hostos = os)) {
// detect apple m1 environment
const char *magnums;
if (SupportsFreebsd() && is_freebsd) { if (SupportsFreebsd() && is_freebsd) {
hostos = _HOSTFREEBSD; hostos = _HOSTFREEBSD;
magnums = syscon_freebsd; } else if (SupportsXnu() && m1) {
} else if (SupportsXnu() && (__syslib = m1)) {
hostos = _HOSTXNU; hostos = _HOSTXNU;
magnums = syscon_xnu;
} else if (SupportsLinux()) { } else if (SupportsLinux()) {
hostos = _HOSTLINUX; hostos = _HOSTLINUX;
} else {
notpossible;
}
}
const char *magnums;
if (IsFreebsd()) {
magnums = syscon_freebsd;
} else if (IsXnu()) {
if (!(__syslib = m1)) {
notpossible;
}
magnums = syscon_xnu;
} else if (IsLinux()) {
magnums = syscon_linux; magnums = syscon_linux;
} else { } else {
notpossible; notpossible;
@ -139,7 +149,7 @@ wontreturn textstartup void cosmo(long *sp, struct Syslib *m1, char *exename,
} }
// check system call abi compatibility // check system call abi compatibility
if (SupportsXnu() && __syslib && __syslib->__version < SYSLIB_VERSION) { if (IsXnu() && __syslib->__version < SYSLIB_VERSION) {
sys_write(2, "need newer ape loader\n", 22); sys_write(2, "need newer ape loader\n", 22);
_Exit(127); _Exit(127);
} }