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- More timspec_*() and timeval_*() APIs have been introduced.
- The copyfd() function is now simplified thanks to POSIX rules.
- More Cosmo-specific APIs have been moved behind the COSMO define.
- The setitimer() polyfill for Windows NT is now much higher quality.
- Fixed build error for MODE=aarch64 due to -mstringop-strategy=loop.
- This change introduces `make MODE=nox87 toolchain` which makes it
  possible to build programs using your cosmocc toolchain that don't
  have legacy fpu instructions. This is useful, for example, if you
  want to have a ~22kb tinier blink virtual machine.
This commit is contained in:
Justine Tunney 2023-06-15 13:50:42 -07:00
parent 8dc11afcf6
commit c3440d040c
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GPG key ID: BE714B4575D6E328
132 changed files with 539 additions and 587 deletions
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2
libc/runtime/cosmo.S
View file

@ -45,6 +45,7 @@ cosmo: push %rbp
mov %eax,%r12d
#endif /* SYSDEBUG */
#ifndef NOX87
// Windows always initializes FPU to douuble precision.
// WSL breaks Linux ABI by initializing FPU to double precision.
// This code makes long double long again.
@ -70,6 +71,7 @@ cosmo: push %rbp
// d││││rr││││││
1: .short 0b00000000000000000001101111111
.previous
#endif
#ifdef __FAST_MATH__
push %rax

36
libc/runtime/runtime.h
View file

@ -20,24 +20,9 @@ typedef unsigned long jmp_buf[26];
typedef long sigjmp_buf[12];
extern char **environ; /* CRT */
extern int __argc; /* CRT */
extern char **__argv; /* CRT */
extern char **__envp; /* CRT */
extern unsigned long *__auxv; /* CRT */
extern intptr_t __oldstack; /* CRT */
extern uint64_t __nosync; /* SYS */
extern int __strace; /* SYS */
extern int __ftrace; /* SYS */
extern char *program_invocation_name; /* RII */
extern char *program_invocation_short_name; /* RII */
extern uint64_t __syscount; /* RII */
extern uint64_t kStartTsc; /* RII */
extern char kTmpPath[]; /* RII */
extern const char kNtSystemDirectory[]; /* RII */
extern const char kNtWindowsDirectory[]; /* RII */
extern size_t __virtualmax;
extern bool __isworker;
extern char **environ;
extern char *program_invocation_name;
extern char *program_invocation_short_name;
void mcount(void);
int daemon(int, int);
@ -83,6 +68,21 @@ int sethostname(const char *, size_t);
int acct(const char *);
#ifdef COSMO
extern int __argc;
extern char **__argv;
extern char **__envp;
extern unsigned long *__auxv;
extern intptr_t __oldstack;
extern uint64_t __nosync;
extern int __strace;
extern int __ftrace;
extern uint64_t __syscount;
extern uint64_t kStartTsc;
extern char kTmpPath[];
extern const char kNtSystemDirectory[];
extern const char kNtWindowsDirectory[];
extern size_t __virtualmax;
extern bool __isworker;
/* utilities */
void _intsort(int *, size_t);
void _longsort(long *, size_t);

5
libc/runtime/set_tls.c
View file

@ -23,6 +23,7 @@
#include "libc/errno.h"
#include "libc/nexgen32e/msr.internal.h"
#include "libc/nt/thread.h"
#include "libc/sysv/consts/arch.h"
#include "libc/thread/tls.h"
#include "libc/thread/tls2.h"
@ -60,8 +61,10 @@ textstartup void __set_tls(struct CosmoTib *tib) {
: "c"(MSR_IA32_FS_BASE), "a"((uint32_t)val),
"d"((uint32_t)(val >> 32)));
}
#else
#elif defined(__aarch64__)
register long x28 asm("x28") = (long)tib;
asm volatile("" : "+r"(x28));
#else
#error "unsupported architecture"
#endif
}