From c1ba1a0fec4aed430709030f98a3bdb90bfeea16 Mon Sep 17 00:00:00 2001
From: Ondřej Surý <ondrej@sury.org>
Date: Thu, 28 Apr 2011 10:35:15 +0200
Subject: Imported Upstream version 2011.04.27

---
 src/pkg/runtime/linux/386/signal.c   |  7 +++++++
 src/pkg/runtime/linux/386/sys.s      |  8 ++++++++
 src/pkg/runtime/linux/amd64/signal.c |  7 +++++++
 src/pkg/runtime/linux/amd64/sys.s    |  9 +++++++++
 src/pkg/runtime/linux/arm/signal.c   |  7 +++++++
 src/pkg/runtime/linux/arm/sys.s      | 12 +++++++++++-
 src/pkg/runtime/linux/mem.c          |  7 +++++++
 src/pkg/runtime/linux/os.h           |  2 ++
 8 files changed, 58 insertions(+), 1 deletion(-)

(limited to 'src/pkg/runtime/linux')

diff --git a/src/pkg/runtime/linux/386/signal.c b/src/pkg/runtime/linux/386/signal.c
index 9b72ecbae..8916e10bd 100644
--- a/src/pkg/runtime/linux/386/signal.c
+++ b/src/pkg/runtime/linux/386/signal.c
@@ -175,3 +175,10 @@ runtime·resetcpuprofiler(int32 hz)
 	}
 	m->profilehz = hz;
 }
+
+void
+os·sigpipe(void)
+{
+	sigaction(SIGPIPE, SIG_DFL, false);
+	runtime·raisesigpipe();
+}
diff --git a/src/pkg/runtime/linux/386/sys.s b/src/pkg/runtime/linux/386/sys.s
index c39ce253f..868a0d901 100644
--- a/src/pkg/runtime/linux/386/sys.s
+++ b/src/pkg/runtime/linux/386/sys.s
@@ -30,6 +30,14 @@ TEXT runtime·write(SB),7,$0
 	INT	$0x80
 	RET
 
+TEXT runtime·raisesigpipe(SB),7,$12
+	MOVL	$224, AX	// syscall - gettid
+	INT	$0x80
+	MOVL	AX, 0(SP)	// arg 1 tid
+	MOVL	$13, 4(SP)	// arg 2 SIGPIPE
+	MOVL	$238, AX	// syscall - tkill
+	INT	$0x80
+	RET
 
 TEXT runtime·setitimer(SB),7,$0-24
 	MOVL	$104, AX			// syscall - setitimer
diff --git a/src/pkg/runtime/linux/amd64/signal.c b/src/pkg/runtime/linux/amd64/signal.c
index 1db9c95e5..ee90271ed 100644
--- a/src/pkg/runtime/linux/amd64/signal.c
+++ b/src/pkg/runtime/linux/amd64/signal.c
@@ -185,3 +185,10 @@ runtime·resetcpuprofiler(int32 hz)
 	}
 	m->profilehz = hz;
 }
+
+void
+os·sigpipe(void)
+{
+	sigaction(SIGPIPE, SIG_DFL, false);
+	runtime·raisesigpipe();
+}
diff --git a/src/pkg/runtime/linux/amd64/sys.s b/src/pkg/runtime/linux/amd64/sys.s
index 11df1f894..eadd30005 100644
--- a/src/pkg/runtime/linux/amd64/sys.s
+++ b/src/pkg/runtime/linux/amd64/sys.s
@@ -36,6 +36,15 @@ TEXT runtime·write(SB),7,$0-24
 	SYSCALL
 	RET
 
+TEXT runtime·raisesigpipe(SB),7,$12
+	MOVL	$186, AX	// syscall - gettid
+	SYSCALL
+	MOVL	AX, DI	// arg 1 tid
+	MOVL	$13, SI	// arg 2 SIGPIPE
+	MOVL	$200, AX	// syscall - tkill
+	SYSCALL
+	RET
+
 TEXT runtime·setitimer(SB),7,$0-24
 	MOVL	8(SP), DI
 	MOVQ	16(SP), SI
diff --git a/src/pkg/runtime/linux/arm/signal.c b/src/pkg/runtime/linux/arm/signal.c
index 05c6b0261..88a84d112 100644
--- a/src/pkg/runtime/linux/arm/signal.c
+++ b/src/pkg/runtime/linux/arm/signal.c
@@ -180,3 +180,10 @@ runtime·resetcpuprofiler(int32 hz)
 	}
 	m->profilehz = hz;
 }
+
+void
+os·sigpipe(void)
+{
+	sigaction(SIGPIPE, SIG_DFL, false);
+	runtime·raisesigpipe();
+}
diff --git a/src/pkg/runtime/linux/arm/sys.s b/src/pkg/runtime/linux/arm/sys.s
index b9767a028..d866b0e22 100644
--- a/src/pkg/runtime/linux/arm/sys.s
+++ b/src/pkg/runtime/linux/arm/sys.s
@@ -22,11 +22,12 @@
 #define SYS_rt_sigaction (SYS_BASE + 174)
 #define SYS_sigaltstack (SYS_BASE + 186)
 #define SYS_mmap2 (SYS_BASE + 192)
-#define SYS_gettid (SYS_BASE + 224)
 #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 SYS_gettid (SYS_BASE + 224)
+#define SYS_tkill (SYS_BASE + 238)
 
 #define ARM_BASE (SYS_BASE + 0x0f0000)
 #define SYS_ARM_cacheflush (ARM_BASE + 2)
@@ -55,6 +56,15 @@ TEXT runtime·exit1(SB),7,$-4
 	MOVW	$1003, R1
 	MOVW	R0, (R1)	// fail hard
 
+TEXT	runtime·raisesigpipe(SB),7,$-4
+	MOVW	$SYS_gettid, R7
+	SWI	$0
+	// arg 1 tid already in R0 from gettid
+	MOVW	$13, R1	// arg 2 SIGPIPE
+	MOVW	$SYS_tkill, R7
+	SWI	$0
+	RET
+
 TEXT runtime·mmap(SB),7,$0
 	MOVW	0(FP), R0
 	MOVW	4(FP), R1
diff --git a/src/pkg/runtime/linux/mem.c b/src/pkg/runtime/linux/mem.c
index d2f6f8204..ce1a8aa70 100644
--- a/src/pkg/runtime/linux/mem.c
+++ b/src/pkg/runtime/linux/mem.c
@@ -48,6 +48,11 @@ runtime·SysReserve(void *v, uintptr n)
 	return runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
 }
 
+enum
+{
+	ENOMEM = 12,
+};
+
 void
 runtime·SysMap(void *v, uintptr n)
 {
@@ -66,6 +71,8 @@ runtime·SysMap(void *v, uintptr n)
 	}
 
 	p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);
+	if(p == (void*)-ENOMEM)
+		runtime·throw("runtime: out of memory");
 	if(p != v)
 		runtime·throw("runtime: cannot map pages in arena address space");
 }
diff --git a/src/pkg/runtime/linux/os.h b/src/pkg/runtime/linux/os.h
index 6ae088977..0bb8d0339 100644
--- a/src/pkg/runtime/linux/os.h
+++ b/src/pkg/runtime/linux/os.h
@@ -15,3 +15,5 @@ void	runtime·rt_sigaction(uintptr, struct Sigaction*, void*, uintptr);
 void	runtime·sigaltstack(Sigaltstack*, Sigaltstack*);
 void	runtime·sigpanic(void);
 void runtime·setitimer(int32, Itimerval*, Itimerval*);
+
+void	runtime·raisesigpipe(void);
-- 
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