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-rw-r--r--src/pkg/runtime/linux/386/defs.h191
-rw-r--r--src/pkg/runtime/linux/386/rt0.s17
-rw-r--r--src/pkg/runtime/linux/386/signal.c208
-rw-r--r--src/pkg/runtime/linux/386/sys.s350
4 files changed, 0 insertions, 766 deletions
diff --git a/src/pkg/runtime/linux/386/defs.h b/src/pkg/runtime/linux/386/defs.h
deleted file mode 100644
index 73fe23ef9..000000000
--- a/src/pkg/runtime/linux/386/defs.h
+++ /dev/null
@@ -1,191 +0,0 @@
-// godefs -f -m32 -f -I/home/rsc/pub/linux-2.6/arch/x86/include -f -I/home/rsc/pub/linux-2.6/include -f -D_LOOSE_KERNEL_NAMES -f -D__ARCH_SI_UID_T=__kernel_uid32_t defs2.c
-
-// MACHINE GENERATED - DO NOT EDIT.
-
-// Constants
-enum {
- PROT_NONE = 0,
- PROT_READ = 0x1,
- PROT_WRITE = 0x2,
- PROT_EXEC = 0x4,
- MAP_ANON = 0x20,
- MAP_PRIVATE = 0x2,
- MAP_FIXED = 0x10,
- SA_RESTART = 0x10000000,
- SA_ONSTACK = 0x8000000,
- SA_RESTORER = 0x4000000,
- SA_SIGINFO = 0x4,
- SIGHUP = 0x1,
- SIGINT = 0x2,
- SIGQUIT = 0x3,
- SIGILL = 0x4,
- SIGTRAP = 0x5,
- SIGABRT = 0x6,
- SIGBUS = 0x7,
- SIGFPE = 0x8,
- SIGKILL = 0x9,
- SIGUSR1 = 0xa,
- SIGSEGV = 0xb,
- SIGUSR2 = 0xc,
- SIGPIPE = 0xd,
- SIGALRM = 0xe,
- SIGSTKFLT = 0x10,
- SIGCHLD = 0x11,
- SIGCONT = 0x12,
- SIGSTOP = 0x13,
- SIGTSTP = 0x14,
- SIGTTIN = 0x15,
- SIGTTOU = 0x16,
- SIGURG = 0x17,
- SIGXCPU = 0x18,
- SIGXFSZ = 0x19,
- SIGVTALRM = 0x1a,
- SIGPROF = 0x1b,
- SIGWINCH = 0x1c,
- SIGIO = 0x1d,
- SIGPWR = 0x1e,
- SIGSYS = 0x1f,
- FPE_INTDIV = 0x1,
- FPE_INTOVF = 0x2,
- FPE_FLTDIV = 0x3,
- FPE_FLTOVF = 0x4,
- FPE_FLTUND = 0x5,
- FPE_FLTRES = 0x6,
- FPE_FLTINV = 0x7,
- FPE_FLTSUB = 0x8,
- BUS_ADRALN = 0x1,
- BUS_ADRERR = 0x2,
- BUS_OBJERR = 0x3,
- SEGV_MAPERR = 0x1,
- SEGV_ACCERR = 0x2,
- ITIMER_REAL = 0,
- ITIMER_VIRTUAL = 0x1,
- ITIMER_PROF = 0x2,
- O_RDONLY = 0,
- O_CLOEXEC = 02000000,
-};
-
-// Types
-#pragma pack on
-
-typedef struct Fpreg Fpreg;
-struct Fpreg {
- uint16 significand[4];
- uint16 exponent;
-};
-
-typedef struct Fpxreg Fpxreg;
-struct Fpxreg {
- uint16 significand[4];
- uint16 exponent;
- uint16 padding[3];
-};
-
-typedef struct Xmmreg Xmmreg;
-struct Xmmreg {
- uint32 element[4];
-};
-
-typedef struct Fpstate Fpstate;
-struct Fpstate {
- uint32 cw;
- uint32 sw;
- uint32 tag;
- uint32 ipoff;
- uint32 cssel;
- uint32 dataoff;
- uint32 datasel;
- Fpreg _st[8];
- uint16 status;
- uint16 magic;
- uint32 _fxsr_env[6];
- uint32 mxcsr;
- uint32 reserved;
- Fpxreg _fxsr_st[8];
- Xmmreg _xmm[8];
- uint32 padding1[44];
- byte Pad_godefs_0[48];
-};
-
-typedef struct Timespec Timespec;
-struct Timespec {
- int32 tv_sec;
- int32 tv_nsec;
-};
-
-typedef struct Timeval Timeval;
-struct Timeval {
- int32 tv_sec;
- int32 tv_usec;
-};
-
-typedef struct Sigaction Sigaction;
-struct Sigaction {
- void *k_sa_handler;
- uint32 sa_flags;
- void *sa_restorer;
- uint32 sa_mask;
-};
-
-typedef struct Siginfo Siginfo;
-struct Siginfo {
- int32 si_signo;
- int32 si_errno;
- int32 si_code;
- byte _sifields[116];
-};
-
-typedef struct Sigaltstack Sigaltstack;
-struct Sigaltstack {
- void *ss_sp;
- int32 ss_flags;
- uint32 ss_size;
-};
-
-typedef struct Sigcontext Sigcontext;
-struct Sigcontext {
- uint16 gs;
- uint16 __gsh;
- uint16 fs;
- uint16 __fsh;
- uint16 es;
- uint16 __esh;
- uint16 ds;
- uint16 __dsh;
- uint32 edi;
- uint32 esi;
- uint32 ebp;
- uint32 esp;
- uint32 ebx;
- uint32 edx;
- uint32 ecx;
- uint32 eax;
- uint32 trapno;
- uint32 err;
- uint32 eip;
- uint16 cs;
- uint16 __csh;
- uint32 eflags;
- uint32 esp_at_signal;
- uint16 ss;
- uint16 __ssh;
- Fpstate *fpstate;
- uint32 oldmask;
- uint32 cr2;
-};
-
-typedef struct Ucontext Ucontext;
-struct Ucontext {
- uint32 uc_flags;
- Ucontext *uc_link;
- Sigaltstack uc_stack;
- Sigcontext uc_mcontext;
- uint32 uc_sigmask;
-};
-
-typedef struct Itimerval Itimerval;
-struct Itimerval {
- Timeval it_interval;
- Timeval it_value;
-};
-#pragma pack off
diff --git a/src/pkg/runtime/linux/386/rt0.s b/src/pkg/runtime/linux/386/rt0.s
deleted file mode 100644
index 83149540e..000000000
--- a/src/pkg/runtime/linux/386/rt0.s
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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_386_linux(SB),7,$0
- CALL runtime·linux_setup_vdso(SB)
- JMP _rt0_386(SB)
-
-TEXT _fallback_vdso(SB),7,$0
- INT $0x80
- RET
-
-DATA runtime·_vdso(SB)/4, $_fallback_vdso(SB)
-GLOBL runtime·_vdso(SB), $4
-
diff --git a/src/pkg/runtime/linux/386/signal.c b/src/pkg/runtime/linux/386/signal.c
deleted file mode 100644
index 4045b2efc..000000000
--- a/src/pkg/runtime/linux/386/signal.c
+++ /dev/null
@@ -1,208 +0,0 @@
-// 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 "signals.h"
-#include "os.h"
-
-void
-runtime·dumpregs(Sigcontext *r)
-{
- runtime·printf("eax %x\n", r->eax);
- runtime·printf("ebx %x\n", r->ebx);
- runtime·printf("ecx %x\n", r->ecx);
- runtime·printf("edx %x\n", r->edx);
- runtime·printf("edi %x\n", r->edi);
- runtime·printf("esi %x\n", r->esi);
- runtime·printf("ebp %x\n", r->ebp);
- runtime·printf("esp %x\n", r->esp);
- runtime·printf("eip %x\n", r->eip);
- runtime·printf("eflags %x\n", r->eflags);
- runtime·printf("cs %x\n", r->cs);
- runtime·printf("fs %x\n", r->fs);
- runtime·printf("gs %x\n", r->gs);
-}
-
-/*
- * This assembler routine takes the args from registers, puts them on the stack,
- * and calls sighandler().
- */
-extern void runtime·sigtramp(void);
-extern void runtime·sigignore(void); // just returns
-extern void runtime·sigreturn(void); // calls runtime·sigreturn
-
-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;
- Sigcontext *r;
- uintptr *sp;
-
- uc = context;
- r = &uc->uc_mcontext;
-
- if(sig == SIGPROF) {
- runtime·sigprof((uint8*)r->eip, (uint8*)r->esp, nil, gp);
- return;
- }
-
- if(gp != nil && (runtime·sigtab[sig].flags & SigPanic)) {
- // 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)[3];
- gp->sigpc = r->eip;
-
- // Only push runtime·sigpanic if r->eip != 0.
- // If r->eip == 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->eip != 0) {
- sp = (uintptr*)r->esp;
- *--sp = r->eip;
- r->esp = (uintptr)sp;
- }
- r->eip = (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->eip);
- runtime·printf("\n");
-
- if(runtime·gotraceback()){
- runtime·traceback((void*)r->eip, (void*)r->esp, 0, gp);
- runtime·tracebackothers(gp);
- runtime·dumpregs(r);
- }
-
- runtime·exit(2);
-}
-
-void
-runtime·signalstack(byte *p, int32 n)
-{
- Sigaltstack 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_ONSTACK | SA_SIGINFO | SA_RESTORER;
- if(restart)
- sa.sa_flags |= SA_RESTART;
- sa.sa_mask = ~0ULL;
- sa.sa_restorer = (void*)runtime·sigreturn;
- if(fn == runtime·sighandler)
- fn = (void*)runtime·sigtramp;
- sa.k_sa_handler = fn;
- runtime·rt_sigaction(i, &sa, nil, 8);
-}
-
-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();
-}
-
-#define AT_NULL 0
-#define AT_SYSINFO 32
-extern uint32 runtime·_vdso;
-
-#pragma textflag 7
-void runtime·linux_setup_vdso(int32 argc, void *argv_list)
-{
- byte **argv = &argv_list;
- byte **envp;
- uint32 *auxv;
-
- // skip envp to get to ELF auxiliary vector.
- for(envp = &argv[argc+1]; *envp != nil; envp++)
- ;
- envp++;
-
- for(auxv=(uint32*)envp; auxv[0] != AT_NULL; auxv += 2) {
- if(auxv[0] == AT_SYSINFO) {
- runtime·_vdso = auxv[1];
- break;
- }
- }
-}
diff --git a/src/pkg/runtime/linux/386/sys.s b/src/pkg/runtime/linux/386/sys.s
deleted file mode 100644
index f87420f78..000000000
--- a/src/pkg/runtime/linux/386/sys.s
+++ /dev/null
@@ -1,350 +0,0 @@
-// 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 386, Linux
-//
-
-#include "386/asm.h"
-
-TEXT runtime·exit(SB),7,$0
- MOVL $252, AX // syscall number
- MOVL 4(SP), BX
- CALL *runtime·_vdso(SB)
- INT $3 // not reached
- RET
-
-TEXT runtime·exit1(SB),7,$0
- MOVL $1, AX // exit - exit the current os thread
- MOVL 4(SP), BX
- CALL *runtime·_vdso(SB)
- INT $3 // not reached
- RET
-
-TEXT runtime·open(SB),7,$0
- MOVL $5, AX // syscall - open
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·close(SB),7,$0
- MOVL $6, AX // syscall - close
- MOVL 4(SP), BX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·write(SB),7,$0
- MOVL $4, AX // syscall - write
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·read(SB),7,$0
- MOVL $3, AX // syscall - read
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·raisesigpipe(SB),7,$12
- MOVL $224, AX // syscall - gettid
- CALL *runtime·_vdso(SB)
- MOVL AX, 0(SP) // arg 1 tid
- MOVL $13, 4(SP) // arg 2 SIGPIPE
- MOVL $238, AX // syscall - tkill
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·setitimer(SB),7,$0-24
- MOVL $104, AX // syscall - setitimer
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·mincore(SB),7,$0-24
- MOVL $218, AX // syscall - mincore
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·gettime(SB), 7, $32
- MOVL $78, AX // syscall - gettimeofday
- LEAL 8(SP), BX
- MOVL $0, CX
- MOVL $0, DX
- CALL *runtime·_vdso(SB)
-
- MOVL 8(SP), BX // sec
- MOVL sec+0(FP), DI
- MOVL BX, (DI)
- MOVL $0, 4(DI) // zero extend 32 -> 64 bits
-
- MOVL 12(SP), BX // usec
- MOVL usec+4(FP), DI
- MOVL BX, (DI)
- RET
-
-TEXT runtime·rt_sigaction(SB),7,$0
- MOVL $174, AX // syscall - rt_sigaction
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- MOVL 16(SP), SI
- CALL *runtime·_vdso(SB)
- RET
-
-TEXT runtime·sigtramp(SB),7,$44
- get_tls(CX)
-
- // save g
- MOVL g(CX), DI
- MOVL DI, 20(SP)
-
- // g = m->gsignal
- MOVL m(CX), BX
- MOVL m_gsignal(BX), BX
- MOVL BX, g(CX)
-
- // copy arguments for call to sighandler
- MOVL sig+0(FP), BX
- MOVL BX, 0(SP)
- MOVL info+4(FP), BX
- MOVL BX, 4(SP)
- MOVL context+8(FP), BX
- MOVL BX, 8(SP)
- MOVL DI, 12(SP)
-
- CALL runtime·sighandler(SB)
-
- // restore g
- get_tls(CX)
- MOVL 20(SP), BX
- MOVL BX, g(CX)
-
- RET
-
-TEXT runtime·sigignore(SB),7,$0
- RET
-
-TEXT runtime·sigreturn(SB),7,$0
- MOVL $173, AX // rt_sigreturn
- // Sigreturn expects same SP as signal handler,
- // so cannot CALL *runtime._vsdo(SB) here.
- INT $0x80
- INT $3 // not reached
- RET
-
-TEXT runtime·mmap(SB),7,$0
- MOVL $192, AX // mmap2
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- MOVL 16(SP), SI
- MOVL 20(SP), DI
- MOVL 24(SP), BP
- SHRL $12, BP
- CALL *runtime·_vdso(SB)
- CMPL AX, $0xfffff001
- JLS 3(PC)
- NOTL AX
- INCL AX
- RET
-
-TEXT runtime·munmap(SB),7,$0
- MOVL $91, AX // munmap
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- CALL *runtime·_vdso(SB)
- CMPL AX, $0xfffff001
- JLS 2(PC)
- INT $3
- RET
-
-// int32 futex(int32 *uaddr, int32 op, int32 val,
-// struct timespec *timeout, int32 *uaddr2, int32 val2);
-TEXT runtime·futex(SB),7,$0
- MOVL $240, AX // futex
- MOVL 4(SP), BX
- MOVL 8(SP), CX
- MOVL 12(SP), DX
- MOVL 16(SP), SI
- MOVL 20(SP), DI
- MOVL 24(SP), BP
- CALL *runtime·_vdso(SB)
- RET
-
-// int32 clone(int32 flags, void *stack, M *m, G *g, void (*fn)(void));
-TEXT runtime·clone(SB),7,$0
- MOVL $120, AX // clone
- MOVL flags+4(SP), BX
- MOVL stack+8(SP), CX
- MOVL $0, DX // parent tid ptr
- MOVL $0, DI // child tid ptr
-
- // Copy m, g, fn off parent stack for use by child.
- SUBL $16, CX
- MOVL mm+12(SP), SI
- MOVL SI, 0(CX)
- MOVL gg+16(SP), SI
- MOVL SI, 4(CX)
- MOVL fn+20(SP), SI
- MOVL SI, 8(CX)
- MOVL $1234, 12(CX)
-
- // cannot use CALL *runtime·_vdso(SB) here, because
- // the stack changes during the system call (after
- // CALL *runtime·_vdso(SB), the child is still using
- // the parent's stack when executing its RET instruction).
- INT $0x80
-
- // In parent, return.
- CMPL AX, $0
- JEQ 2(PC)
- RET
-
- // Paranoia: check that SP is as we expect.
- MOVL 12(SP), BP
- CMPL BP, $1234
- JEQ 2(PC)
- INT $3
-
- // Initialize AX to Linux tid
- MOVL $224, AX
- CALL *runtime·_vdso(SB)
-
- // In child on new stack. Reload registers (paranoia).
- MOVL 0(SP), BX // m
- MOVL 4(SP), DX // g
- MOVL 8(SP), SI // fn
-
- MOVL AX, m_procid(BX) // save tid as m->procid
-
- // set up ldt 7+id to point at m->tls.
- // newosproc left the id in tls[0].
- LEAL m_tls(BX), BP
- MOVL 0(BP), DI
- ADDL $7, DI // m0 is LDT#7. count up.
- // setldt(tls#, &tls, sizeof tls)
- PUSHAL // save registers
- PUSHL $32 // sizeof tls
- PUSHL BP // &tls
- PUSHL DI // tls #
- CALL runtime·setldt(SB)
- POPL AX
- POPL AX
- POPL AX
- POPAL
-
- // Now segment is established. Initialize m, g.
- get_tls(AX)
- MOVL DX, g(AX)
- MOVL BX, m(AX)
-
- CALL runtime·stackcheck(SB) // smashes AX, CX
- MOVL 0(DX), DX // paranoia; check they are not nil
- MOVL 0(BX), BX
-
- // more paranoia; check that stack splitting code works
- PUSHAL
- CALL runtime·emptyfunc(SB)
- POPAL
-
- CALL SI // fn()
- CALL runtime·exit1(SB)
- MOVL $0x1234, 0x1005
- RET
-
-TEXT runtime·sigaltstack(SB),7,$-8
- MOVL $186, AX // sigaltstack
- MOVL new+4(SP), BX
- MOVL old+8(SP), CX
- CALL *runtime·_vdso(SB)
- CMPL AX, $0xfffff001
- JLS 2(PC)
- INT $3
- RET
-
-// <asm-i386/ldt.h>
-// struct user_desc {
-// unsigned int entry_number;
-// unsigned long base_addr;
-// unsigned int limit;
-// unsigned int seg_32bit:1;
-// unsigned int contents:2;
-// unsigned int read_exec_only:1;
-// unsigned int limit_in_pages:1;
-// unsigned int seg_not_present:1;
-// unsigned int useable:1;
-// };
-#define SEG_32BIT 0x01
-// contents are the 2 bits 0x02 and 0x04.
-#define CONTENTS_DATA 0x00
-#define CONTENTS_STACK 0x02
-#define CONTENTS_CODE 0x04
-#define READ_EXEC_ONLY 0x08
-#define LIMIT_IN_PAGES 0x10
-#define SEG_NOT_PRESENT 0x20
-#define USEABLE 0x40
-
-// setldt(int entry, int address, int limit)
-TEXT runtime·setldt(SB),7,$32
- MOVL entry+0(FP), BX // entry
- MOVL address+4(FP), CX // base address
-
- /*
- * When linking against the system libraries,
- * we use its pthread_create and let it set up %gs
- * for us. When we do that, the private storage
- * we get is not at 0(GS), 4(GS), but -8(GS), -4(GS).
- * To insulate the rest of the tool chain from this
- * ugliness, 8l rewrites 0(GS) into -8(GS) for us.
- * To accommodate that rewrite, we translate
- * the address here and bump the limit to 0xffffffff (no limit)
- * so that -8(GS) maps to 0(address).
- * Also, the final 0(GS) (current 8(CX)) has to point
- * to itself, to mimic ELF.
- */
- ADDL $0x8, CX // address
- MOVL CX, 0(CX)
-
- // set up user_desc
- LEAL 16(SP), AX // struct user_desc
- MOVL BX, 0(AX)
- MOVL CX, 4(AX)
- MOVL $0xfffff, 8(AX)
- MOVL $(SEG_32BIT|LIMIT_IN_PAGES|USEABLE|CONTENTS_DATA), 12(AX) // flag bits
-
- // call modify_ldt
- MOVL $1, BX // func = 1 (write)
- MOVL AX, CX // user_desc
- MOVL $16, DX // sizeof(user_desc)
- MOVL $123, AX // syscall - modify_ldt
- CALL *runtime·_vdso(SB)
-
- // breakpoint on error
- CMPL AX, $0xfffff001
- JLS 2(PC)
- INT $3
-
- // compute segment selector - (entry*8+7)
- MOVL entry+0(FP), AX
- SHLL $3, AX
- ADDL $7, AX
- MOVW AX, GS
-
- RET
-
-TEXT runtime·osyield(SB),7,$0
- MOVL $158, AX
- CALL *runtime·_vdso(SB)
- RET
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-17 09:20:58 +0000