1 files changed, 0 insertions, 230 deletions
diff --git a/libgo/runtime/mem.c b/libgo/runtime/mem.c
deleted file mode 100644
index 6312480..0000000
--- a/libgo/runtime/mem.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/* Defining _XOPEN_SOURCE hides the declaration of madvise() on Solaris <
-   11 and the MADV_DONTNEED definition on IRIX 6.5.  */
-#undef _XOPEN_SOURCE
-
-#include <errno.h>
-#include <unistd.h>
-
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-#ifndef MAP_ANON
-#ifdef MAP_ANONYMOUS
-#define MAP_ANON MAP_ANONYMOUS
-#else
-#define USE_DEV_ZERO
-#define MAP_ANON 0
-#endif
-#endif
-
-#ifndef MAP_NORESERVE
-#define MAP_NORESERVE 0
-#endif
-
-#ifdef USE_DEV_ZERO
-static int dev_zero = -1;
-#endif
-
-static int32
-addrspace_free(void *v __attribute__ ((unused)), uintptr n __attribute__ ((unused)))
-{
-#ifdef HAVE_MINCORE
-	size_t page_size = getpagesize();
-	int32 errval;
-	uintptr chunk;
-	uintptr off;
-	
-	// NOTE: vec must be just 1 byte long here.
-	// Mincore returns ENOMEM if any of the pages are unmapped,
-	// but we want to know that all of the pages are unmapped.
-	// To make these the same, we can only ask about one page
-	// at a time. See golang.org/issue/7476.
-	static byte vec[1];
-
-	errno = 0;
-	for(off = 0; off < n; off += chunk) {
-		chunk = page_size * sizeof vec;
-		if(chunk > (n - off))
-			chunk = n - off;
-		errval = mincore((char*)v + off, chunk, (void*)vec);
-		// ENOMEM means unmapped, which is what we want.
-		// Anything else we assume means the pages are mapped.
-		if(errval == 0 || errno != ENOMEM)
-			return 0;
-	}
-#endif
-	return 1;
-}
-
-static void *
-mmap_fixed(byte *v, uintptr n, int32 prot, int32 flags, int32 fd, uint32 offset)
-{
-	void *p;
-
-	p = runtime_mmap((void *)v, n, prot, flags, fd, offset);
-	if(p != v && addrspace_free(v, n)) {
-		// On some systems, mmap ignores v without
-		// MAP_FIXED, so retry if the address space is free.
-		if(p != MAP_FAILED)
-			runtime_munmap(p, n);
-		p = runtime_mmap((void *)v, n, prot, flags|MAP_FIXED, fd, offset);
-	}
-	return p;
-}
-
-void*
-runtime_SysAlloc(uintptr n, uint64 *stat)
-{
-	void *p;
-	int fd = -1;
-
-#ifdef USE_DEV_ZERO
-	if (dev_zero == -1) {
-		dev_zero = open("/dev/zero", O_RDONLY);
-		if (dev_zero < 0) {
-			runtime_printf("open /dev/zero: errno=%d\n", errno);
-			exit(2);
-		}
-	}
-	fd = dev_zero;
-#endif
-
-	p = runtime_mmap(nil, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, fd, 0);
-	if (p == MAP_FAILED) {
-		if(errno == EACCES) {
-			runtime_printf("runtime: mmap: access denied\n");
-			runtime_printf("if you're running SELinux, enable execmem for this process.\n");
-			exit(2);
-		}
-		if(errno == EAGAIN) {
-			runtime_printf("runtime: mmap: too much locked memory (check 'ulimit -l').\n");
-			runtime_exit(2);
-		}
-		return nil;
-	}
-	runtime_xadd64(stat, n);
-	return p;
-}
-
-void
-runtime_SysUnused(void *v __attribute__ ((unused)), uintptr n __attribute__ ((unused)))
-{
-#ifdef MADV_DONTNEED
-	runtime_madvise(v, n, MADV_DONTNEED);
-#endif
-}
-
-void
-runtime_SysUsed(void *v, uintptr n)
-{
-	USED(v);
-	USED(n);
-}
-
-void
-runtime_SysFree(void *v, uintptr n, uint64 *stat)
-{
-	runtime_xadd64(stat, -(uint64)n);
-	runtime_munmap(v, n);
-}
-
-void
-runtime_SysFault(void *v, uintptr n)
-{
-	int fd = -1;
-
-#ifdef USE_DEV_ZERO
-	if (dev_zero == -1) {
-		dev_zero = open("/dev/zero", O_RDONLY);
-		if (dev_zero < 0) {
-			runtime_printf("open /dev/zero: errno=%d\n", errno);
-			exit(2);
-		}
-	}
-	fd = dev_zero;
-#endif
-
-	runtime_mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE|MAP_FIXED, fd, 0);
-}
-
-void*
-runtime_SysReserve(void *v, uintptr n, bool *reserved)
-{
-	int fd = -1;
-	void *p;
-
-#ifdef USE_DEV_ZERO
-	if (dev_zero == -1) {
-		dev_zero = open("/dev/zero", O_RDONLY);
-		if (dev_zero < 0) {
-			runtime_printf("open /dev/zero: errno=%d\n", errno);
-			exit(2);
-		}
-	}
-	fd = dev_zero;
-#endif
-
-	// On 64-bit, people with ulimit -v set complain if we reserve too
-	// much address space.  Instead, assume that the reservation is okay
-	// if we can reserve at least 64K and check the assumption in SysMap.
-	// Only user-mode Linux (UML) rejects these requests.
-	if(sizeof(void*) == 8 && (n >> 16) > 1LLU<<16) {
-		p = mmap_fixed(v, 64<<10, PROT_NONE, MAP_ANON|MAP_PRIVATE, fd, 0);
-		if (p != v) {
-			runtime_munmap(p, 64<<10);
-			return nil;
-		}
-		runtime_munmap(p, 64<<10);
-		*reserved = false;
-		return v;
-	}
-	
-	// Use the MAP_NORESERVE mmap() flag here because typically most of
-	// this reservation will never be used. It does not make sense
-	// reserve a huge amount of unneeded swap space. This is important on
-	// systems which do not overcommit memory by default.
-	p = runtime_mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE|MAP_NORESERVE, fd, 0);
-	if(p == MAP_FAILED)
-		return nil;
-	*reserved = true;
-	return p;
-}
-
-void
-runtime_SysMap(void *v, uintptr n, bool reserved, uint64 *stat)
-{
-	void *p;
-	int fd = -1;
-	
-	runtime_xadd64(stat, n);
-
-#ifdef USE_DEV_ZERO
-	if (dev_zero == -1) {
-		dev_zero = open("/dev/zero", O_RDONLY);
-		if (dev_zero < 0) {
-			runtime_printf("open /dev/zero: errno=%d\n", errno);
-			exit(2);
-		}
-	}
-	fd = dev_zero;
-#endif
-
-	// On 64-bit, we don't actually have v reserved, so tread carefully.
-	if(!reserved) {
-		p = mmap_fixed(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, fd, 0);
-		if(p == MAP_FAILED && errno == ENOMEM)
-			runtime_throw("runtime: out of memory");
-		if(p != v) {
-			runtime_printf("runtime: address space conflict: map(%p) = %p\n", v, p);
-			runtime_throw("runtime: address space conflict");
-		}
-		return;
-	}
-
-	p = runtime_mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_FIXED|MAP_PRIVATE, fd, 0);
-	if(p == MAP_FAILED && errno == ENOMEM)
-		runtime_throw("runtime: out of memory");
-	if(p != v)
-		runtime_throw("runtime: cannot map pages in arena address space");
-}