summaryrefslogtreecommitdiff
path: root/src/pkg/runtime/darwin/amd64
diff options
context:
space:
mode:
Diffstat (limited to 'src/pkg/runtime/darwin/amd64')
-rw-r--r--src/pkg/runtime/darwin/amd64/defs.h305
-rw-r--r--src/pkg/runtime/darwin/amd64/rt0.s10
-rw-r--r--src/pkg/runtime/darwin/amd64/signal.c204
-rw-r--r--src/pkg/runtime/darwin/amd64/sys.s295
4 files changed, 814 insertions, 0 deletions
diff --git a/src/pkg/runtime/darwin/amd64/defs.h b/src/pkg/runtime/darwin/amd64/defs.h
new file mode 100644
index 000000000..90f798e8a
--- /dev/null
+++ b/src/pkg/runtime/darwin/amd64/defs.h
@@ -0,0 +1,305 @@
+// godefs -f -m64 defs.c
+
+// MACHINE GENERATED - DO NOT EDIT.
+
+// Constants
+enum {
+ PROT_NONE = 0,
+ PROT_READ = 0x1,
+ PROT_WRITE = 0x2,
+ PROT_EXEC = 0x4,
+ MAP_ANON = 0x1000,
+ MAP_PRIVATE = 0x2,
+ MAP_FIXED = 0x10,
+ MACH_MSG_TYPE_MOVE_RECEIVE = 0x10,
+ MACH_MSG_TYPE_MOVE_SEND = 0x11,
+ MACH_MSG_TYPE_MOVE_SEND_ONCE = 0x12,
+ MACH_MSG_TYPE_COPY_SEND = 0x13,
+ MACH_MSG_TYPE_MAKE_SEND = 0x14,
+ MACH_MSG_TYPE_MAKE_SEND_ONCE = 0x15,
+ MACH_MSG_TYPE_COPY_RECEIVE = 0x16,
+ MACH_MSG_PORT_DESCRIPTOR = 0,
+ MACH_MSG_OOL_DESCRIPTOR = 0x1,
+ MACH_MSG_OOL_PORTS_DESCRIPTOR = 0x2,
+ MACH_MSG_OOL_VOLATILE_DESCRIPTOR = 0x3,
+ MACH_MSGH_BITS_COMPLEX = 0x80000000,
+ MACH_SEND_MSG = 0x1,
+ MACH_RCV_MSG = 0x2,
+ MACH_RCV_LARGE = 0x4,
+ MACH_SEND_TIMEOUT = 0x10,
+ MACH_SEND_INTERRUPT = 0x40,
+ MACH_SEND_CANCEL = 0x80,
+ MACH_SEND_ALWAYS = 0x10000,
+ MACH_SEND_TRAILER = 0x20000,
+ MACH_RCV_TIMEOUT = 0x100,
+ MACH_RCV_NOTIFY = 0x200,
+ MACH_RCV_INTERRUPT = 0x400,
+ MACH_RCV_OVERWRITE = 0x1000,
+ NDR_PROTOCOL_2_0 = 0,
+ NDR_INT_BIG_ENDIAN = 0,
+ NDR_INT_LITTLE_ENDIAN = 0x1,
+ NDR_FLOAT_IEEE = 0,
+ NDR_CHAR_ASCII = 0,
+ SA_SIGINFO = 0x40,
+ SA_RESTART = 0x2,
+ SA_ONSTACK = 0x1,
+ SA_USERTRAMP = 0x100,
+ SA_64REGSET = 0x200,
+ SIGHUP = 0x1,
+ SIGINT = 0x2,
+ SIGQUIT = 0x3,
+ SIGILL = 0x4,
+ SIGTRAP = 0x5,
+ SIGABRT = 0x6,
+ SIGEMT = 0x7,
+ SIGFPE = 0x8,
+ SIGKILL = 0x9,
+ SIGBUS = 0xa,
+ SIGSEGV = 0xb,
+ SIGSYS = 0xc,
+ SIGPIPE = 0xd,
+ SIGALRM = 0xe,
+ SIGTERM = 0xf,
+ SIGURG = 0x10,
+ SIGSTOP = 0x11,
+ SIGTSTP = 0x12,
+ SIGCONT = 0x13,
+ SIGCHLD = 0x14,
+ SIGTTIN = 0x15,
+ SIGTTOU = 0x16,
+ SIGIO = 0x17,
+ SIGXCPU = 0x18,
+ SIGXFSZ = 0x19,
+ SIGVTALRM = 0x1a,
+ SIGPROF = 0x1b,
+ SIGWINCH = 0x1c,
+ SIGINFO = 0x1d,
+ SIGUSR1 = 0x1e,
+ SIGUSR2 = 0x1f,
+ FPE_INTDIV = 0x7,
+ FPE_INTOVF = 0x8,
+ FPE_FLTDIV = 0x1,
+ FPE_FLTOVF = 0x2,
+ FPE_FLTUND = 0x3,
+ FPE_FLTRES = 0x4,
+ FPE_FLTINV = 0x5,
+ FPE_FLTSUB = 0x6,
+ BUS_ADRALN = 0x1,
+ BUS_ADRERR = 0x2,
+ BUS_OBJERR = 0x3,
+ SEGV_MAPERR = 0x1,
+ SEGV_ACCERR = 0x2,
+ ITIMER_REAL = 0,
+ ITIMER_VIRTUAL = 0x1,
+ ITIMER_PROF = 0x2,
+};
+
+// Types
+#pragma pack on
+
+typedef struct MachBody MachBody;
+struct MachBody {
+ uint32 msgh_descriptor_count;
+};
+
+typedef struct MachHeader MachHeader;
+struct MachHeader {
+ uint32 msgh_bits;
+ uint32 msgh_size;
+ uint32 msgh_remote_port;
+ uint32 msgh_local_port;
+ uint32 msgh_reserved;
+ int32 msgh_id;
+};
+
+typedef struct MachNDR MachNDR;
+struct MachNDR {
+ uint8 mig_vers;
+ uint8 if_vers;
+ uint8 reserved1;
+ uint8 mig_encoding;
+ uint8 int_rep;
+ uint8 char_rep;
+ uint8 float_rep;
+ uint8 reserved2;
+};
+
+typedef struct MachPort MachPort;
+struct MachPort {
+ uint32 name;
+ uint32 pad1;
+ uint16 pad2;
+ uint8 disposition;
+ uint8 type;
+};
+
+typedef struct StackT StackT;
+struct StackT {
+ void *ss_sp;
+ uint64 ss_size;
+ int32 ss_flags;
+ byte pad_godefs_0[4];
+};
+
+typedef union Sighandler Sighandler;
+union Sighandler {
+ uint64 __sa_handler;
+ uint64 __sa_sigaction;
+};
+
+typedef struct Sigaction Sigaction;
+struct Sigaction {
+ Sighandler __sigaction_u;
+ uint64 sa_tramp;
+ uint32 sa_mask;
+ int32 sa_flags;
+};
+
+typedef union Sigval Sigval;
+union Sigval {
+ int32 sival_int;
+ void *sival_ptr;
+};
+
+typedef struct Siginfo Siginfo;
+struct Siginfo {
+ int32 si_signo;
+ int32 si_errno;
+ int32 si_code;
+ int32 si_pid;
+ uint32 si_uid;
+ int32 si_status;
+ void *si_addr;
+ Sigval si_value;
+ int64 si_band;
+ uint64 __pad[7];
+};
+
+typedef struct Timeval Timeval;
+struct Timeval {
+ int64 tv_sec;
+ int32 tv_usec;
+ byte pad_godefs_0[4];
+};
+
+typedef struct Itimerval Itimerval;
+struct Itimerval {
+ Timeval it_interval;
+ Timeval it_value;
+};
+
+typedef struct FPControl FPControl;
+struct FPControl {
+ byte pad_godefs_0[2];
+};
+
+typedef struct FPStatus FPStatus;
+struct FPStatus {
+ byte pad_godefs_0[2];
+};
+
+typedef struct RegMMST RegMMST;
+struct RegMMST {
+ int8 mmst_reg[10];
+ int8 mmst_rsrv[6];
+};
+
+typedef struct RegXMM RegXMM;
+struct RegXMM {
+ int8 xmm_reg[16];
+};
+
+typedef struct Regs Regs;
+struct Regs {
+ uint64 rax;
+ uint64 rbx;
+ uint64 rcx;
+ uint64 rdx;
+ uint64 rdi;
+ uint64 rsi;
+ uint64 rbp;
+ uint64 rsp;
+ uint64 r8;
+ uint64 r9;
+ uint64 r10;
+ uint64 r11;
+ uint64 r12;
+ uint64 r13;
+ uint64 r14;
+ uint64 r15;
+ uint64 rip;
+ uint64 rflags;
+ uint64 cs;
+ uint64 fs;
+ uint64 gs;
+};
+
+typedef struct FloatState FloatState;
+struct FloatState {
+ uint64 fpu_reserved;
+ FPControl fpu_fcw;
+ FPStatus fpu_fsw;
+ uint8 fpu_ftw;
+ uint8 fpu_rsrv1;
+ uint16 fpu_fop;
+ uint32 fpu_ip;
+ uint16 fpu_cs;
+ uint16 fpu_rsrv2;
+ uint32 fpu_dp;
+ uint16 fpu_ds;
+ uint16 fpu_rsrv3;
+ uint32 fpu_mxcsr;
+ uint32 fpu_mxcsrmask;
+ RegMMST fpu_stmm0;
+ RegMMST fpu_stmm1;
+ RegMMST fpu_stmm2;
+ RegMMST fpu_stmm3;
+ RegMMST fpu_stmm4;
+ RegMMST fpu_stmm5;
+ RegMMST fpu_stmm6;
+ RegMMST fpu_stmm7;
+ RegXMM fpu_xmm0;
+ RegXMM fpu_xmm1;
+ RegXMM fpu_xmm2;
+ RegXMM fpu_xmm3;
+ RegXMM fpu_xmm4;
+ RegXMM fpu_xmm5;
+ RegXMM fpu_xmm6;
+ RegXMM fpu_xmm7;
+ RegXMM fpu_xmm8;
+ RegXMM fpu_xmm9;
+ RegXMM fpu_xmm10;
+ RegXMM fpu_xmm11;
+ RegXMM fpu_xmm12;
+ RegXMM fpu_xmm13;
+ RegXMM fpu_xmm14;
+ RegXMM fpu_xmm15;
+ int8 fpu_rsrv4[96];
+ int32 fpu_reserved1;
+};
+
+typedef struct ExceptionState ExceptionState;
+struct ExceptionState {
+ uint32 trapno;
+ uint32 err;
+ uint64 faultvaddr;
+};
+
+typedef struct Mcontext Mcontext;
+struct Mcontext {
+ ExceptionState es;
+ Regs ss;
+ FloatState fs;
+ byte pad_godefs_0[4];
+};
+
+typedef struct Ucontext Ucontext;
+struct Ucontext {
+ int32 uc_onstack;
+ uint32 uc_sigmask;
+ StackT uc_stack;
+ uint64 uc_link;
+ uint64 uc_mcsize;
+ Mcontext *uc_mcontext;
+};
+#pragma pack off
diff --git a/src/pkg/runtime/darwin/amd64/rt0.s b/src/pkg/runtime/darwin/amd64/rt0.s
new file mode 100644
index 000000000..4cfab5876
--- /dev/null
+++ b/src/pkg/runtime/darwin/amd64/rt0.s
@@ -0,0 +1,10 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Darwin and Linux use the same linkage to main
+
+TEXT _rt0_amd64_darwin(SB),7,$-8
+ MOVQ $_rt0_amd64(SB), AX
+ MOVQ SP, DI
+ JMP AX
diff --git a/src/pkg/runtime/darwin/amd64/signal.c b/src/pkg/runtime/darwin/amd64/signal.c
new file mode 100644
index 000000000..036a3aca7
--- /dev/null
+++ b/src/pkg/runtime/darwin/amd64/signal.c
@@ -0,0 +1,204 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "runtime.h"
+#include "defs.h"
+#include "os.h"
+#include "signals.h"
+
+void
+runtime·dumpregs(Regs *r)
+{
+ runtime·printf("rax %X\n", r->rax);
+ runtime·printf("rbx %X\n", r->rbx);
+ runtime·printf("rcx %X\n", r->rcx);
+ runtime·printf("rdx %X\n", r->rdx);
+ runtime·printf("rdi %X\n", r->rdi);
+ runtime·printf("rsi %X\n", r->rsi);
+ runtime·printf("rbp %X\n", r->rbp);
+ runtime·printf("rsp %X\n", r->rsp);
+ runtime·printf("r8 %X\n", r->r8 );
+ runtime·printf("r9 %X\n", r->r9 );
+ runtime·printf("r10 %X\n", r->r10);
+ runtime·printf("r11 %X\n", r->r11);
+ runtime·printf("r12 %X\n", r->r12);
+ runtime·printf("r13 %X\n", r->r13);
+ runtime·printf("r14 %X\n", r->r14);
+ runtime·printf("r15 %X\n", r->r15);
+ runtime·printf("rip %X\n", r->rip);
+ runtime·printf("rflags %X\n", r->rflags);
+ runtime·printf("cs %X\n", r->cs);
+ runtime·printf("fs %X\n", r->fs);
+ runtime·printf("gs %X\n", r->gs);
+}
+
+String
+runtime·signame(int32 sig)
+{
+ if(sig < 0 || sig >= NSIG)
+ return runtime·emptystring;
+ return runtime·gostringnocopy((byte*)runtime·sigtab[sig].name);
+}
+
+void
+runtime·sighandler(int32 sig, Siginfo *info, void *context, G *gp)
+{
+ Ucontext *uc;
+ Mcontext *mc;
+ Regs *r;
+ uintptr *sp;
+ byte *pc;
+
+ uc = context;
+ mc = uc->uc_mcontext;
+ r = &mc->ss;
+
+ if(sig == SIGPROF) {
+ runtime·sigprof((uint8*)r->rip, (uint8*)r->rsp, nil, gp);
+ return;
+ }
+
+ if(gp != nil && (runtime·sigtab[sig].flags & SigPanic)) {
+ // Work around Leopard bug that doesn't set FPE_INTDIV.
+ // Look at instruction to see if it is a divide.
+ // Not necessary in Snow Leopard (si_code will be != 0).
+ if(sig == SIGFPE && info->si_code == 0) {
+ pc = (byte*)r->rip;
+ if((pc[0]&0xF0) == 0x40) // 64-bit REX prefix
+ pc++;
+ else if(pc[0] == 0x66) // 16-bit instruction prefix
+ pc++;
+ if(pc[0] == 0xF6 || pc[0] == 0xF7)
+ info->si_code = FPE_INTDIV;
+ }
+
+ // Make it look like a call to the signal func.
+ // Have to pass arguments out of band since
+ // augmenting the stack frame would break
+ // the unwinding code.
+ gp->sig = sig;
+ gp->sigcode0 = info->si_code;
+ gp->sigcode1 = (uintptr)info->si_addr;
+ gp->sigpc = r->rip;
+
+ // Only push runtime·sigpanic if r->rip != 0.
+ // If r->rip == 0, probably panicked because of a
+ // call to a nil func. Not pushing that onto sp will
+ // make the trace look like a call to runtime·sigpanic instead.
+ // (Otherwise the trace will end at runtime·sigpanic and we
+ // won't get to see who faulted.)
+ if(r->rip != 0) {
+ sp = (uintptr*)r->rsp;
+ *--sp = r->rip;
+ r->rsp = (uintptr)sp;
+ }
+ r->rip = (uintptr)runtime·sigpanic;
+ return;
+ }
+
+ if(runtime·sigtab[sig].flags & SigQueue) {
+ if(runtime·sigsend(sig) || (runtime·sigtab[sig].flags & SigIgnore))
+ return;
+ runtime·exit(2); // SIGINT, SIGTERM, etc
+ }
+
+ if(runtime·panicking) // traceback already printed
+ runtime·exit(2);
+ runtime·panicking = 1;
+
+ if(sig < 0 || sig >= NSIG){
+ runtime·printf("Signal %d\n", sig);
+ }else{
+ runtime·printf("%s\n", runtime·sigtab[sig].name);
+ }
+
+ runtime·printf("pc: %X\n", r->rip);
+ runtime·printf("\n");
+
+ if(runtime·gotraceback()){
+ runtime·traceback((void*)r->rip, (void*)r->rsp, 0, gp);
+ runtime·tracebackothers(gp);
+ runtime·dumpregs(r);
+ }
+
+ runtime·exit(2);
+}
+
+void
+runtime·sigignore(int32, Siginfo*, void*)
+{
+}
+
+void
+runtime·signalstack(byte *p, int32 n)
+{
+ StackT st;
+
+ st.ss_sp = p;
+ st.ss_size = n;
+ st.ss_flags = 0;
+ runtime·sigaltstack(&st, nil);
+}
+
+static void
+sigaction(int32 i, void (*fn)(int32, Siginfo*, void*, G*), bool restart)
+{
+ Sigaction sa;
+
+ runtime·memclr((byte*)&sa, sizeof sa);
+ sa.sa_flags = SA_SIGINFO|SA_ONSTACK;
+ if(restart)
+ sa.sa_flags |= SA_RESTART;
+ sa.sa_mask = ~0ULL;
+ sa.sa_tramp = (uintptr)runtime·sigtramp; // runtime·sigtramp's job is to call into real handler
+ sa.__sigaction_u.__sa_sigaction = (uintptr)fn;
+ runtime·sigaction(i, &sa, nil);
+}
+
+void
+runtime·initsig(int32 queue)
+{
+ int32 i;
+ void *fn;
+
+ runtime·siginit();
+
+ for(i = 0; i<NSIG; i++) {
+ if(runtime·sigtab[i].flags) {
+ if((runtime·sigtab[i].flags & SigQueue) != queue)
+ continue;
+ if(runtime·sigtab[i].flags & (SigCatch | SigQueue))
+ fn = runtime·sighandler;
+ else
+ fn = runtime·sigignore;
+ sigaction(i, fn, (runtime·sigtab[i].flags & SigRestart) != 0);
+ }
+ }
+}
+
+void
+runtime·resetcpuprofiler(int32 hz)
+{
+ Itimerval it;
+
+ runtime·memclr((byte*)&it, sizeof it);
+ if(hz == 0) {
+ runtime·setitimer(ITIMER_PROF, &it, nil);
+ sigaction(SIGPROF, SIG_IGN, true);
+ } else {
+ sigaction(SIGPROF, runtime·sighandler, true);
+ it.it_interval.tv_sec = 0;
+ it.it_interval.tv_usec = 1000000 / hz;
+ it.it_value = it.it_interval;
+ runtime·setitimer(ITIMER_PROF, &it, nil);
+ }
+ m->profilehz = hz;
+}
+
+void
+os·sigpipe(void)
+{
+ sigaction(SIGPIPE, SIG_DFL, false);
+ runtime·raisesigpipe();
+}
diff --git a/src/pkg/runtime/darwin/amd64/sys.s b/src/pkg/runtime/darwin/amd64/sys.s
new file mode 100644
index 000000000..8d1b20f11
--- /dev/null
+++ b/src/pkg/runtime/darwin/amd64/sys.s
@@ -0,0 +1,295 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//
+// System calls and other sys.stuff for AMD64, Darwin
+// See http://fxr.watson.org/fxr/source/bsd/kern/syscalls.c?v=xnu-1228
+// or /usr/include/sys/syscall.h (on a Mac) for system call numbers.
+//
+// The low 24 bits are the system call number.
+// The high 8 bits specify the kind of system call: 1=Mach, 2=BSD, 3=Machine-Dependent.
+//
+
+#include "amd64/asm.h"
+
+// Exit the entire program (like C exit)
+TEXT runtime·exit(SB),7,$0
+ MOVL 8(SP), DI // arg 1 exit status
+ MOVL $(0x2000000+1), AX // syscall entry
+ SYSCALL
+ CALL runtime·notok(SB)
+ RET
+
+// Exit this OS thread (like pthread_exit, which eventually
+// calls __bsdthread_terminate).
+TEXT runtime·exit1(SB),7,$0
+ MOVL 8(SP), DI // arg 1 exit status
+ MOVL $(0x2000000+361), AX // syscall entry
+ SYSCALL
+ CALL runtime·notok(SB)
+ RET
+
+TEXT runtime·write(SB),7,$0
+ MOVL 8(SP), DI // arg 1 fd
+ MOVQ 16(SP), SI // arg 2 buf
+ MOVL 24(SP), DX // arg 3 count
+ MOVL $(0x2000000+4), AX // syscall entry
+ SYSCALL
+ RET
+
+TEXT runtime·raisesigpipe(SB),7,$24
+ get_tls(CX)
+ MOVQ m(CX), DX
+ MOVL $13, DI // arg 1 SIGPIPE
+ MOVQ m_procid(DX), SI // arg 2 thread_port
+ MOVL $(0x2000000+328), AX // syscall entry __pthread_kill
+ SYSCALL
+ RET
+
+TEXT runtime·setitimer(SB), 7, $0
+ MOVL 8(SP), DI
+ MOVQ 16(SP), SI
+ MOVQ 24(SP), DX
+ MOVL $(0x2000000+83), AX // syscall entry
+ SYSCALL
+ RET
+
+// void gettime(int64 *sec, int32 *usec)
+TEXT runtime·gettime(SB), 7, $32
+ MOVQ SP, DI // must be non-nil, unused
+ MOVQ $0, SI
+ MOVL $(0x2000000+116), AX
+ SYSCALL
+ MOVQ sec+0(FP), DI
+ MOVQ AX, (DI)
+ MOVQ usec+8(FP), DI
+ MOVL DX, (DI)
+ RET
+
+TEXT runtime·sigaction(SB),7,$0
+ MOVL 8(SP), DI // arg 1 sig
+ MOVQ 16(SP), SI // arg 2 act
+ MOVQ 24(SP), DX // arg 3 oact
+ MOVQ 24(SP), CX // arg 3 oact
+ MOVQ 24(SP), R10 // arg 3 oact
+ MOVL $(0x2000000+46), AX // syscall entry
+ SYSCALL
+ JCC 2(PC)
+ CALL runtime·notok(SB)
+ RET
+
+TEXT runtime·sigtramp(SB),7,$64
+ get_tls(BX)
+
+ // save g
+ MOVQ g(BX), R10
+ MOVQ R10, 48(SP)
+
+ // g = m->gsignal
+ MOVQ m(BX), BP
+ MOVQ m_gsignal(BP), BP
+ MOVQ BP, g(BX)
+
+ MOVL DX, 0(SP)
+ MOVQ CX, 8(SP)
+ MOVQ R8, 16(SP)
+ MOVQ R10, 24(SP)
+
+ MOVQ R8, 32(SP) // save ucontext
+ MOVQ SI, 40(SP) // save infostyle
+ CALL DI
+
+ // restore g
+ get_tls(BX)
+ MOVQ 48(SP), R10
+ MOVQ R10, g(BX)
+
+ // call sigreturn
+ MOVL $(0x2000000+184), AX // sigreturn(ucontext, infostyle)
+ MOVQ 32(SP), DI // saved ucontext
+ MOVQ 40(SP), SI // saved infostyle
+ SYSCALL
+ INT $3 // not reached
+
+TEXT runtime·mmap(SB),7,$0
+ MOVQ 8(SP), DI // arg 1 addr
+ MOVQ 16(SP), SI // arg 2 len
+ MOVL 24(SP), DX // arg 3 prot
+ MOVL 28(SP), R10 // arg 4 flags
+ MOVL 32(SP), R8 // arg 5 fid
+ MOVL 36(SP), R9 // arg 6 offset
+ MOVL $(0x2000000+197), AX // syscall entry
+ SYSCALL
+ RET
+
+TEXT runtime·munmap(SB),7,$0
+ MOVQ 8(SP), DI // arg 1 addr
+ MOVQ 16(SP), SI // arg 2 len
+ MOVL $(0x2000000+73), AX // syscall entry
+ SYSCALL
+ JCC 2(PC)
+ CALL runtime·notok(SB)
+ RET
+
+TEXT runtime·notok(SB),7,$0
+ MOVL $0xf1, BP
+ MOVQ BP, (BP)
+ RET
+
+TEXT runtime·sigaltstack(SB),7,$0
+ MOVQ new+8(SP), DI
+ MOVQ old+16(SP), SI
+ MOVQ $(0x2000000+53), AX
+ SYSCALL
+ JCC 2(PC)
+ CALL runtime·notok(SB)
+ RET
+
+// void bsdthread_create(void *stk, M *m, G *g, void (*fn)(void))
+TEXT runtime·bsdthread_create(SB),7,$0
+ // Set up arguments to bsdthread_create system call.
+ // The ones in quotes pass through to the thread callback
+ // uninterpreted, so we can put whatever we want there.
+ MOVQ fn+32(SP), DI // "func"
+ MOVQ mm+16(SP), SI // "arg"
+ MOVQ stk+8(SP), DX // stack
+ MOVQ gg+24(SP), R10 // "pthread"
+ MOVQ $0x01000000, R8 // flags = PTHREAD_START_CUSTOM
+ MOVQ $0, R9 // paranoia
+ MOVQ $(0x2000000+360), AX // bsdthread_create
+ SYSCALL
+ JCC 3(PC)
+ NEGL AX
+ RET
+ MOVL $0, AX
+ RET
+
+// The thread that bsdthread_create creates starts executing here,
+// because we registered this function using bsdthread_register
+// at startup.
+// DI = "pthread"
+// SI = mach thread port
+// DX = "func" (= fn)
+// CX = "arg" (= m)
+// R8 = stack
+// R9 = flags (= 0)
+// SP = stack - C_64_REDZONE_LEN (= stack - 128)
+TEXT runtime·bsdthread_start(SB),7,$0
+ MOVQ R8, SP // empirically, SP is very wrong but R8 is right
+
+ PUSHQ DX
+ PUSHQ CX
+ PUSHQ SI
+
+ // set up thread local storage pointing at m->tls.
+ LEAQ m_tls(CX), DI
+ CALL runtime·settls(SB)
+
+ POPQ SI
+ POPQ CX
+ POPQ DX
+
+ get_tls(BX)
+ MOVQ CX, m(BX)
+ MOVQ SI, m_procid(CX) // thread port is m->procid
+ MOVQ m_g0(CX), AX
+ MOVQ AX, g(BX)
+ CALL runtime·stackcheck(SB) // smashes AX, CX
+ CALL DX // fn
+ CALL runtime·exit1(SB)
+ RET
+
+// void bsdthread_register(void)
+// registers callbacks for threadstart (see bsdthread_create above
+// and wqthread and pthsize (not used). returns 0 on success.
+TEXT runtime·bsdthread_register(SB),7,$0
+ MOVQ $runtime·bsdthread_start(SB), DI // threadstart
+ MOVQ $0, SI // wqthread, not used by us
+ MOVQ $0, DX // pthsize, not used by us
+ MOVQ $0, R10 // dummy_value [sic]
+ MOVQ $0, R8 // targetconc_ptr
+ MOVQ $0, R9 // dispatchqueue_offset
+ MOVQ $(0x2000000+366), AX // bsdthread_register
+ SYSCALL
+ JCC 2(PC)
+ CALL runtime·notok(SB)
+ RET
+
+// Mach system calls use 0x1000000 instead of the BSD's 0x2000000.
+
+// uint32 mach_msg_trap(void*, uint32, uint32, uint32, uint32, uint32, uint32)
+TEXT runtime·mach_msg_trap(SB),7,$0
+ MOVQ 8(SP), DI
+ MOVL 16(SP), SI
+ MOVL 20(SP), DX
+ MOVL 24(SP), R10
+ MOVL 28(SP), R8
+ MOVL 32(SP), R9
+ MOVL 36(SP), R11
+ PUSHQ R11 // seventh arg, on stack
+ MOVL $(0x1000000+31), AX // mach_msg_trap
+ SYSCALL
+ POPQ R11
+ RET
+
+TEXT runtime·mach_task_self(SB),7,$0
+ MOVL $(0x1000000+28), AX // task_self_trap
+ SYSCALL
+ RET
+
+TEXT runtime·mach_thread_self(SB),7,$0
+ MOVL $(0x1000000+27), AX // thread_self_trap
+ SYSCALL
+ RET
+
+TEXT runtime·mach_reply_port(SB),7,$0
+ MOVL $(0x1000000+26), AX // mach_reply_port
+ SYSCALL
+ RET
+
+// Mach provides trap versions of the semaphore ops,
+// instead of requiring the use of RPC.
+
+// uint32 mach_semaphore_wait(uint32)
+TEXT runtime·mach_semaphore_wait(SB),7,$0
+ MOVL 8(SP), DI
+ MOVL $(0x1000000+36), AX // semaphore_wait_trap
+ SYSCALL
+ RET
+
+// uint32 mach_semaphore_timedwait(uint32, uint32, uint32)
+TEXT runtime·mach_semaphore_timedwait(SB),7,$0
+ MOVL 8(SP), DI
+ MOVL 12(SP), SI
+ MOVL 16(SP), DX
+ MOVL $(0x1000000+38), AX // semaphore_timedwait_trap
+ SYSCALL
+ RET
+
+// uint32 mach_semaphore_signal(uint32)
+TEXT runtime·mach_semaphore_signal(SB),7,$0
+ MOVL 8(SP), DI
+ MOVL $(0x1000000+33), AX // semaphore_signal_trap
+ SYSCALL
+ RET
+
+// uint32 mach_semaphore_signal_all(uint32)
+TEXT runtime·mach_semaphore_signal_all(SB),7,$0
+ MOVL 8(SP), DI
+ MOVL $(0x1000000+34), AX // semaphore_signal_all_trap
+ SYSCALL
+ RET
+
+// set tls base to DI
+TEXT runtime·settls(SB),7,$32
+ /*
+ * Same as in ../386/sys.s:/ugliness, different constant.
+ * See ../../../../libcgo/darwin_amd64.c for the derivation
+ * of the constant.
+ */
+ SUBQ $0x8a0, DI
+
+ MOVL $(0x3000000+3), AX // thread_fast_set_cthread_self - machdep call #3
+ SYSCALL
+ RET
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-24 05:51:40 +0000