runtime: os-specific types and code for setitimer

R=r
CC=golang-dev
https://golang.org/cl/4273097

18 files changed, 158 insertions, 22 deletions

diff --git a/src/pkg/runtime/darwin/386/defs.h b/src/pkg/runtime/darwin/386/defs.h
index f9d874d85c..bb70207fda 100644
--- a/src/pkg/runtime/darwin/386/defs.h
+++ b/src/pkg/runtime/darwin/386/defs.h
@@ -89,6 +89,9 @@ enum {
 	BUS_OBJERR = 0x3,
 	SEGV_MAPERR = 0x1,
 	SEGV_ACCERR = 0x2,
+	ITIMER_REAL = 0,
+	ITIMER_VIRTUAL = 0x1,
+	ITIMER_PROF = 0x2,
 };
 
 // Types
@@ -139,14 +142,14 @@ struct StackT {
 
 typedef union Sighandler Sighandler;
 union Sighandler {
-	void *__sa_handler;
-	void *__sa_sigaction;
+	uint32 __sa_handler;
+	uint32 __sa_sigaction;
 };
 
 typedef struct Sigaction Sigaction;
 struct Sigaction {
 	Sighandler __sigaction_u;
-	void *sa_tramp;
+	uint32 sa_tramp;
 	uint32 sa_mask;
 	int32 sa_flags;
 };
@@ -171,14 +174,26 @@ struct Siginfo {
 	uint32 __pad[7];
 };
 
+typedef struct Timeval Timeval;
+struct Timeval {
+	int32 tv_sec;
+	int32 tv_usec;
+};
+
+typedef struct Itimerval Itimerval;
+struct Itimerval {
+	Timeval it_interval;
+	Timeval it_value;
+};
+
 typedef struct FPControl FPControl;
 struct FPControl {
-	byte pad0[2];
+	byte pad_godefs_0[2];
 };
 
 typedef struct FPStatus FPStatus;
 struct FPStatus {
-	byte pad0[2];
+	byte pad_godefs_0[2];
 };
 
 typedef struct RegMMST RegMMST;
@@ -214,7 +229,7 @@ struct Regs {
 
 typedef struct FloatState FloatState;
 struct FloatState {
-	int32 fpu_reserved[2];
+	uint64 fpu_reserved;
 	FPControl fpu_fcw;
 	FPStatus fpu_fsw;
 	uint8 fpu_ftw;
@@ -267,7 +282,7 @@ struct Ucontext {
 	int32 uc_onstack;
 	uint32 uc_sigmask;
 	StackT uc_stack;
-	Ucontext *uc_link;
+	uint32 uc_link;
 	uint32 uc_mcsize;
 	Mcontext *uc_mcontext;
 };
diff --git a/src/pkg/runtime/darwin/386/sys.s b/src/pkg/runtime/darwin/386/sys.s
index 9d2caca0a1..08eca9d5a8 100644
--- a/src/pkg/runtime/darwin/386/sys.s
+++ b/src/pkg/runtime/darwin/386/sys.s
@@ -45,6 +45,11 @@ TEXT runtime·munmap(SB),7,$0
 	CALL	runtime·notok(SB)
 	RET
 
+TEXT runtime·setitimer(SB),7,$0
+	MOVL	$83, AX
+	INT	$0x80
+	RET
+
 // void gettime(int64 *sec, int32 *usec)
 TEXT runtime·gettime(SB), 7, $32
 	LEAL	12(SP), AX	// must be non-nil, unused
diff --git a/src/pkg/runtime/darwin/amd64/defs.h b/src/pkg/runtime/darwin/amd64/defs.h
index 09e595988d..90f798e8a7 100644
--- a/src/pkg/runtime/darwin/amd64/defs.h
+++ b/src/pkg/runtime/darwin/amd64/defs.h
@@ -89,6 +89,9 @@ enum {
 	BUS_OBJERR = 0x3,
 	SEGV_MAPERR = 0x1,
 	SEGV_ACCERR = 0x2,
+	ITIMER_REAL = 0,
+	ITIMER_VIRTUAL = 0x1,
+	ITIMER_PROF = 0x2,
 };
 
 // Types
@@ -135,19 +138,19 @@ struct StackT {
 	void *ss_sp;
 	uint64 ss_size;
 	int32 ss_flags;
-	byte pad0[4];
+	byte pad_godefs_0[4];
 };
 
 typedef union Sighandler Sighandler;
 union Sighandler {
-	void *__sa_handler;
-	void *__sa_sigaction;
+	uint64 __sa_handler;
+	uint64 __sa_sigaction;
 };
 
 typedef struct Sigaction Sigaction;
 struct Sigaction {
 	Sighandler __sigaction_u;
-	void *sa_tramp;
+	uint64 sa_tramp;
 	uint32 sa_mask;
 	int32 sa_flags;
 };
@@ -172,14 +175,27 @@ struct Siginfo {
 	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 pad0[2];
+	byte pad_godefs_0[2];
 };
 
 typedef struct FPStatus FPStatus;
 struct FPStatus {
-	byte pad0[2];
+	byte pad_godefs_0[2];
 };
 
 typedef struct RegMMST RegMMST;
@@ -220,7 +236,7 @@ struct Regs {
 
 typedef struct FloatState FloatState;
 struct FloatState {
-	int32 fpu_reserved[2];
+	uint64 fpu_reserved;
 	FPControl fpu_fcw;
 	FPStatus fpu_fsw;
 	uint8 fpu_ftw;
@@ -274,7 +290,7 @@ struct Mcontext {
 	ExceptionState es;
 	Regs ss;
 	FloatState fs;
-	byte pad0[4];
+	byte pad_godefs_0[4];
 };
 
 typedef struct Ucontext Ucontext;
@@ -282,7 +298,7 @@ struct Ucontext {
 	int32 uc_onstack;
 	uint32 uc_sigmask;
 	StackT uc_stack;
-	Ucontext *uc_link;
+	uint64 uc_link;
 	uint64 uc_mcsize;
 	Mcontext *uc_mcontext;
 };
diff --git a/src/pkg/runtime/darwin/amd64/sys.s b/src/pkg/runtime/darwin/amd64/sys.s
index 4f9e0d77a5..10d8f96df5 100644
--- a/src/pkg/runtime/darwin/amd64/sys.s
+++ b/src/pkg/runtime/darwin/amd64/sys.s
@@ -38,11 +38,19 @@ TEXT runtime·write(SB),7,$0
 	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
-	MOVQ	$(0x2000000+116), AX
+	MOVL	$(0x2000000+116), AX
 	SYSCALL
 	MOVQ	sec+0(FP), DI
 	MOVQ	AX, (DI)
diff --git a/src/pkg/runtime/darwin/defs.c b/src/pkg/runtime/darwin/defs.c
index 1a1cdf880c..032a6bcbb3 100644
--- a/src/pkg/runtime/darwin/defs.c
+++ b/src/pkg/runtime/darwin/defs.c
@@ -116,6 +116,10 @@ enum {
 	
 	$SEGV_MAPERR = SEGV_MAPERR,
 	$SEGV_ACCERR = SEGV_ACCERR,
+	
+	$ITIMER_REAL = ITIMER_REAL,
+	$ITIMER_VIRTUAL = ITIMER_VIRTUAL,
+	$ITIMER_PROF = ITIMER_PROF,
 };
 
 typedef mach_msg_body_t	$MachBody;
@@ -130,6 +134,8 @@ typedef struct __sigaction	$Sigaction;	// used in syscalls
 // typedef struct sigaction	$Sigaction;	// used by the C library
 typedef union sigval $Sigval;
 typedef siginfo_t $Siginfo;
+typedef struct timeval	$Timeval;
+typedef struct itimerval	$Itimerval;
 
 typedef struct fp_control $FPControl;
 typedef struct fp_status $FPStatus;
diff --git a/src/pkg/runtime/darwin/os.h b/src/pkg/runtime/darwin/os.h
index 35ef4e6d9e..339768e516 100644
--- a/src/pkg/runtime/darwin/os.h
+++ b/src/pkg/runtime/darwin/os.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+#define SIG_DFL ((void*)0)
+#define SIG_IGN ((void*)1)
+
 int32	runtime·bsdthread_create(void*, M*, G*, void(*)(void));
 void	runtime·bsdthread_register(void);
 int32	runtime·mach_msg_trap(MachHeader*, int32, uint32, uint32, uint32, uint32, uint32);
@@ -23,3 +26,4 @@ struct StackT;
 void	runtime·sigaltstack(struct StackT*, struct StackT*);
 void	runtime·sigtramp(void);
 void	runtime·sigpanic(void);
+void	runtime·setitimer(int32, Itimerval*, Itimerval*);
diff --git a/src/pkg/runtime/freebsd/386/sys.s b/src/pkg/runtime/freebsd/386/sys.s
index 60c189bf83..c4715b668b 100644
--- a/src/pkg/runtime/freebsd/386/sys.s
+++ b/src/pkg/runtime/freebsd/386/sys.s
@@ -87,6 +87,11 @@ TEXT runtime·munmap(SB),7,$-4
 	CALL	runtime·notok(SB)
 	RET
 
+TEXT runtime·setitimer(SB), 7, $-4
+	MOVL	$83, AX
+	INT	$0x80
+	RET
+
 TEXT runtime·gettime(SB), 7, $32
 	MOVL	$116, AX
 	LEAL	12(SP), BX
diff --git a/src/pkg/runtime/freebsd/amd64/sys.s b/src/pkg/runtime/freebsd/amd64/sys.s
index d986e9ac07..9a6fdf1ac6 100644
--- a/src/pkg/runtime/freebsd/amd64/sys.s
+++ b/src/pkg/runtime/freebsd/amd64/sys.s
@@ -65,6 +65,14 @@ TEXT runtime·write(SB),7,$-8
 	SYSCALL
 	RET
 
+TEXT runtime·setitimer(SB), 7, $-8
+	MOVL	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVQ	24(SP), DX
+	MOVL	$83, AX
+	SYSCALL
+	RET
+
 TEXT runtime·gettime(SB), 7, $32
 	MOVL	$116, AX
 	LEAQ	8(SP), DI
diff --git a/src/pkg/runtime/freebsd/defs.c b/src/pkg/runtime/freebsd/defs.c
index 32a80f4756..faa1447ccb 100644
--- a/src/pkg/runtime/freebsd/defs.c
+++ b/src/pkg/runtime/freebsd/defs.c
@@ -86,6 +86,10 @@ enum {
 	
 	$SEGV_MAPERR = SEGV_MAPERR,
 	$SEGV_ACCERR = SEGV_ACCERR,
+	
+	$ITIMER_REAL = ITIMER_REAL,
+	$ITIMER_VIRTUAL = ITIMER_VIRTUAL,
+	$ITIMER_PROF = ITIMER_PROF,
 };
 
 typedef struct rtprio	$Rtprio;
@@ -99,3 +103,4 @@ typedef siginfo_t $Siginfo;
 
 typedef mcontext_t $Mcontext;
 typedef ucontext_t $Ucontext;
+typedef struct itimerval $Itimerval;
diff --git a/src/pkg/runtime/freebsd/os.h b/src/pkg/runtime/freebsd/os.h
index 455355bc70..fd954c0e6e 100644
--- a/src/pkg/runtime/freebsd/os.h
+++ b/src/pkg/runtime/freebsd/os.h
@@ -1,5 +1,9 @@
+#define SIG_DFL ((void*)0)
+#define SIG_IGN ((void*)1)
+
 int32 runtime·thr_new(ThrParam*, int32);
 void runtime·sigpanic(void);
 void runtime·sigaltstack(Sigaltstack*, Sigaltstack*);
 struct sigaction;
 void runtime·sigaction(int32, struct sigaction*, struct sigaction*);
+void	runtiem·setitimerval(int32, Itimerval*, Itimerval*);
diff --git a/src/pkg/runtime/linux/386/defs.h b/src/pkg/runtime/linux/386/defs.h
index c1f58b2a08..6ae1c4e139 100644
--- a/src/pkg/runtime/linux/386/defs.h
+++ b/src/pkg/runtime/linux/386/defs.h
@@ -58,6 +58,9 @@ enum {
 	BUS_OBJERR = 0x3,
 	SEGV_MAPERR = 0x1,
 	SEGV_ACCERR = 0x2,
+	ITIMER_REAL = 0,
+	ITIMER_VIRTUAL = 0x1,
+	ITIMER_PROF = 0x2,
 };
 
 // Types
@@ -98,7 +101,8 @@ struct Fpstate {
 	uint32 reserved;
 	Fpxreg _fxsr_st[8];
 	Xmmreg _xmm[8];
-	uint32 padding[56];
+	uint32 padding1[44];
+	byte Pad_godefs_0[48];
 };
 
 typedef struct Timespec Timespec;
@@ -176,4 +180,10 @@ struct Ucontext {
 	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/sys.s b/src/pkg/runtime/linux/386/sys.s
index a684371bea..c39ce253f0 100644
--- a/src/pkg/runtime/linux/386/sys.s
+++ b/src/pkg/runtime/linux/386/sys.s
@@ -30,6 +30,15 @@ TEXT runtime·write(SB),7,$0
 	INT	$0x80
 	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
+	INT	$0x80
+	RET
+
 TEXT runtime·gettime(SB), 7, $32
 	MOVL	$78, AX			// syscall - gettimeofday
 	LEAL	8(SP), BX
diff --git a/src/pkg/runtime/linux/amd64/defs.h b/src/pkg/runtime/linux/amd64/defs.h
index 3e3d32f0d4..70d63145c6 100644
--- a/src/pkg/runtime/linux/amd64/defs.h
+++ b/src/pkg/runtime/linux/amd64/defs.h
@@ -58,6 +58,9 @@ enum {
 	BUS_OBJERR = 0x3,
 	SEGV_MAPERR = 0x1,
 	SEGV_ACCERR = 0x2,
+	ITIMER_REAL = 0,
+	ITIMER_VIRTUAL = 0x1,
+	ITIMER_PROF = 0x2,
 };
 
 // Types
@@ -88,9 +91,15 @@ struct Siginfo {
 	int32 si_signo;
 	int32 si_errno;
 	int32 si_code;
-	byte pad0[4];
+	byte pad_godefs_0[4];
 	byte _sifields[112];
 };
+
+typedef struct Itimerval Itimerval;
+struct Itimerval {
+	Timeval it_interval;
+	Timeval it_value;
+};
 #pragma pack off
 // godefs -f -m64 defs1.c
 
@@ -170,7 +179,7 @@ typedef struct Sigaltstack Sigaltstack;
 struct Sigaltstack {
 	void *ss_sp;
 	int32 ss_flags;
-	byte pad0[4];
+	byte pad_godefs_0[4];
 	uint64 ss_size;
 };
 
diff --git a/src/pkg/runtime/linux/amd64/sys.s b/src/pkg/runtime/linux/amd64/sys.s
index 1bf734dc06..11df1f894b 100644
--- a/src/pkg/runtime/linux/amd64/sys.s
+++ b/src/pkg/runtime/linux/amd64/sys.s
@@ -36,6 +36,14 @@ TEXT runtime·write(SB),7,$0-24
 	SYSCALL
 	RET
 
+TEXT runtime·setitimer(SB),7,$0-24
+	MOVL	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVQ	24(SP), DX
+	MOVL	$38, AX			// syscall entry
+	SYSCALL
+	RET
+
 TEXT runtime·gettime(SB), 7, $32
 	LEAQ	8(SP), DI
 	MOVQ	$0, SI
diff --git a/src/pkg/runtime/linux/arm/sys.s b/src/pkg/runtime/linux/arm/sys.s
index 9daf9c2e4d..2b01f0cbb3 100644
--- a/src/pkg/runtime/linux/arm/sys.s
+++ b/src/pkg/runtime/linux/arm/sys.s
@@ -26,6 +26,7 @@
 #define SYS_futex (SYS_BASE + 240)
 #define SYS_exit_group (SYS_BASE + 248)
 #define SYS_munmap (SYS_BASE + 91)
+#define SYS_setitimer (SYS_BASE + 104)
 
 #define ARM_BASE (SYS_BASE + 0x0f0000)
 #define SYS_ARM_cacheflush (ARM_BASE + 2)
@@ -72,6 +73,14 @@ TEXT runtime·munmap(SB),7,$0
 	SWI	$0
 	RET
 
+TEXT runtime·getitimer(SB),7,$0
+	MOVW	0(FP), R0
+	MOVW	4(FP), R1
+	MOWW	8(FP), R2
+	MOVW	$SYS_setitimer, R7
+	SWI	$0
+	RET
+
 TEXT runtime·gettime(SB),7,$32
 	/* dummy version - return 0,0 */
 	MOVW	$0, R1
diff --git a/src/pkg/runtime/linux/defs.c b/src/pkg/runtime/linux/defs.c
index 2044fd60c9..5dda787891 100644
--- a/src/pkg/runtime/linux/defs.c
+++ b/src/pkg/runtime/linux/defs.c
@@ -15,6 +15,8 @@
 // headers for things like ucontext_t, so that happens in
 // a separate file, defs1.c.
 
+#include <asm/posix_types.h>
+#define size_t __kernel_size_t
 #include <asm/signal.h>
 #include <asm/siginfo.h>
 #include <asm/mman.h>
@@ -80,9 +82,14 @@ enum {
 	
 	$SEGV_MAPERR = SEGV_MAPERR,
 	$SEGV_ACCERR = SEGV_ACCERR,
+	
+	$ITIMER_REAL = ITIMER_REAL,
+	$ITIMER_VIRTUAL = ITIMER_VIRTUAL,
+	$ITIMER_PROF = ITIMER_PROF,
 };
 
 typedef struct timespec $Timespec;
 typedef struct timeval $Timeval;
 typedef struct sigaction $Sigaction;
 typedef siginfo_t $Siginfo;
+typedef struct itimerval $Itimerval;
diff --git a/src/pkg/runtime/linux/defs2.c b/src/pkg/runtime/linux/defs2.c
index 3c0b110fc9..ff641fff2b 100644
--- a/src/pkg/runtime/linux/defs2.c
+++ b/src/pkg/runtime/linux/defs2.c
@@ -8,7 +8,7 @@
 		-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 \
+		-f -D__ARCH_SI_UID_T'='__kernel_uid32_t \
 		defs2.c >386/defs.h
 
  * The asm header tricks we have to use for Linux on amd64
@@ -100,6 +100,10 @@ enum {
 	
 	$SEGV_MAPERR = SEGV_MAPERR,
 	$SEGV_ACCERR = SEGV_ACCERR,
+	
+	$ITIMER_REAL = ITIMER_REAL,
+	$ITIMER_VIRTUAL = ITIMER_VIRTUAL,
+	$ITIMER_PROF = ITIMER_PROF,
 };
 
 typedef struct _fpreg $Fpreg;
@@ -113,4 +117,4 @@ typedef siginfo_t $Siginfo;
 typedef struct sigaltstack $Sigaltstack;
 typedef struct sigcontext $Sigcontext;
 typedef struct ucontext $Ucontext;
-
+typedef struct itimerval $Itimerval;
diff --git a/src/pkg/runtime/linux/os.h b/src/pkg/runtime/linux/os.h
index 772ade7da9..6ae0889777 100644
--- a/src/pkg/runtime/linux/os.h
+++ b/src/pkg/runtime/linux/os.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+#define SIG_DFL ((void*)0)
+#define SIG_IGN ((void*)1)
+
 // Linux-specific system calls
 int32	runtime·futex(uint32*, int32, uint32, Timespec*, uint32*, uint32);
 int32	runtime·clone(int32, void*, M*, G*, void(*)(void));
@@ -11,3 +14,4 @@ void	runtime·rt_sigaction(uintptr, struct Sigaction*, void*, uintptr);
 
 void	runtime·sigaltstack(Sigaltstack*, Sigaltstack*);
 void	runtime·sigpanic(void);
+void runtime·setitimer(int32, Itimerval*, Itimerval*);