Mesa (master): os: New OS abstraction module.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Wed Feb 3 19:37:05 UTC 2010
Module: Mesa
Branch: master
Commit: 0b0e7057128c213bee8d2158b976869475f7cb42
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=0b0e7057128c213bee8d2158b976869475f7cb42
Author: José Fonseca <jfonseca at vmware.com>
Date: Wed Feb 3 12:11:58 2010 +0000
os: New OS abstraction module.
---
src/gallium/auxiliary/Makefile | 1 +
src/gallium/auxiliary/SConscript | 1 +
src/gallium/auxiliary/os/os_memory.h | 78 +++++++++++
src/gallium/auxiliary/os/os_memory_aligned.h | 72 ++++++++++
src/gallium/auxiliary/os/os_memory_debug.h | 83 +++++++++++
src/gallium/auxiliary/os/os_memory_stdc.h | 76 +++++++++++
src/gallium/auxiliary/os/os_memory_win32k.h | 123 +++++++++++++++++
src/gallium/auxiliary/os/os_misc.c | 188 ++++++++++++++++++++++++++
src/gallium/auxiliary/os/os_misc.h | 95 +++++++++++++
9 files changed, 717 insertions(+), 0 deletions(-)
diff --git a/src/gallium/auxiliary/Makefile b/src/gallium/auxiliary/Makefile
index da1fb6b..e38990a 100644
--- a/src/gallium/auxiliary/Makefile
+++ b/src/gallium/auxiliary/Makefile
@@ -48,6 +48,7 @@ C_SOURCES = \
draw/draw_vs_sse.c \
indices/u_indices_gen.c \
indices/u_unfilled_gen.c \
+ os/os_misc.c \
pipebuffer/pb_buffer_malloc.c \
pipebuffer/pb_bufmgr_alt.c \
pipebuffer/pb_bufmgr_cache.c \
diff --git a/src/gallium/auxiliary/SConscript b/src/gallium/auxiliary/SConscript
index 3aa782f..bfc68ba 100644
--- a/src/gallium/auxiliary/SConscript
+++ b/src/gallium/auxiliary/SConscript
@@ -82,6 +82,7 @@ source = [
#'indices/u_unfilled_indices.c',
'indices/u_indices_gen.c',
'indices/u_unfilled_gen.c',
+ 'os/os_misc.c',
'pipebuffer/pb_buffer_fenced.c',
'pipebuffer/pb_buffer_malloc.c',
'pipebuffer/pb_bufmgr_alt.c',
diff --git a/src/gallium/auxiliary/os/os_memory.h b/src/gallium/auxiliary/os/os_memory.h
new file mode 100644
index 0000000..f18d5a3
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory.h
@@ -0,0 +1,78 @@
+/**************************************************************************
+ *
+ * Copyright 2010 Vmware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * OS memory management abstractions
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#define _OS_MEMORY_H_
+
+
+#include "pipe/p_config.h"
+#include "pipe/p_compiler.h"
+
+
+#if defined(PIPE_OS_EMBEDDED)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void *
+os_malloc(size_t size);
+
+void *
+os_calloc(size_t count, size_t size);
+
+void
+os_free(void *ptr);
+
+void *
+os_realloc(void *ptr, size_t old_size, size_t new_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#elif defined(PIPE_OS_WINDOWS) && defined(DEBUG) && !defined(DEBUG_MEMORY_IMPLEMENTATION)
+
+# include "os_memory_debug.h"
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+
+# include "os_memory_win32k.h"
+
+#else
+
+# include "os_memory_stdc.h"
+
+#endif
+
+#endif /* _OS_MEMORY_H_ */
diff --git a/src/gallium/auxiliary/os/os_memory_aligned.h b/src/gallium/auxiliary/os/os_memory_aligned.h
new file mode 100644
index 0000000..d4528f7
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory_aligned.h
@@ -0,0 +1,72 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * Memory alignment wrappers.
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#error "Must not be included directly. Include os_memory.h instead"
+#endif
+
+
+#include "pipe/p_compiler.h"
+
+
+/**
+ * Return memory on given byte alignment
+ */
+static INLINE void *
+os_malloc_aligned(size_t size, uint alignment)
+{
+ char *ptr, *buf;
+
+ ptr = (char *) os_malloc(size + alignment + sizeof(void *));
+ if (!ptr)
+ return NULL;
+
+ buf = (char *)(((uintptr_t)ptr + sizeof(void *) + alignment - 1) & ~(alignment - 1));
+ *(char **)(buf - sizeof(void *)) = ptr;
+
+ return buf;
+}
+
+
+/**
+ * Free memory returned by align_malloc().
+ */
+static INLINE void
+os_free_aligned(void *ptr)
+{
+ if (ptr) {
+ void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
+ void *realAddr = *cubbyHole;
+ os_free(realAddr);
+ }
+}
diff --git a/src/gallium/auxiliary/os/os_memory_debug.h b/src/gallium/auxiliary/os/os_memory_debug.h
new file mode 100644
index 0000000..c664be9
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory_debug.h
@@ -0,0 +1,83 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * Debugging wrappers for OS memory management abstractions.
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#error "Must not be included directly. Include os_memory.h instead"
+#endif
+
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+void *
+debug_malloc(const char *file, unsigned line, const char *function,
+ size_t size);
+
+void *
+debug_calloc(const char *file, unsigned line, const char *function,
+ size_t count, size_t size );
+
+void
+debug_free(const char *file, unsigned line, const char *function,
+ void *ptr);
+
+void *
+debug_realloc(const char *file, unsigned line, const char *function,
+ void *old_ptr, size_t old_size, size_t new_size );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#ifndef DEBUG_MEMORY_IMPLEMENTATION
+
+#define os_malloc( _size ) \
+ debug_malloc( __FILE__, __LINE__, __FUNCTION__, _size )
+#define os_calloc( _count, _size ) \
+ debug_calloc(__FILE__, __LINE__, __FUNCTION__, _count, _size )
+#define os_free( _ptr ) \
+ debug_free( __FILE__, __LINE__, __FUNCTION__, _ptr )
+#define os_realloc( _ptr, _old_size, _new_size ) \
+ debug_realloc( __FILE__, __LINE__, __FUNCTION__, _ptr, _old_size, _new_size )
+
+/* TODO: wrap os_malloc_aligned() and os_free_aligned() too */
+#include "os_memory_aligned.h"
+
+#endif /* !DEBUG_MEMORY_IMPLEMENTATION */
diff --git a/src/gallium/auxiliary/os/os_memory_stdc.h b/src/gallium/auxiliary/os/os_memory_stdc.h
new file mode 100644
index 0000000..806e536
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory_stdc.h
@@ -0,0 +1,76 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * OS memory management abstractions for the standard C library.
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#error "Must not be included directly. Include os_memory.h instead"
+#endif
+
+#include <stdlib.h>
+
+#include "pipe/p_compiler.h"
+
+
+#define os_malloc(_size) malloc(_size)
+#define os_calloc(_count, _size ) calloc(_count, _size )
+#define os_free(_ptr) free(_ptr)
+
+#define os_realloc( _old_ptr, _old_size, _new_size) \
+ realloc(_old_ptr, _new_size + 0*(_old_size))
+
+
+#if defined(HAVE_POSIX_MEMALIGN)
+
+static INLINE void *
+os_malloc_aligned(size_t size, size_t alignment)
+{
+ void *ptr;
+ alignment = (alignment + sizeof(void*) - 1) & ~(sizeof(void*) - 1);
+ if(posix_memalign(&ptr, alignment, size) != 0)
+ return NULL;
+ return ptr;
+}
+
+#define os_free_aligned(_ptr) free(_ptr)
+
+#elif defined(PIPE_OS_WINDOWS)
+
+#include <malloc.h>
+
+#define os_malloc_aligned(_size, _align) _aligned_malloc(_size, _align)
+#define os_free_aligned(_ptr) _aligned_free(_ptr)
+
+#else
+
+#include "os_memory_aligned.h"
+
+#endif
diff --git a/src/gallium/auxiliary/os/os_memory_win32k.h b/src/gallium/auxiliary/os/os_memory_win32k.h
new file mode 100644
index 0000000..d56d690
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_memory_win32k.h
@@ -0,0 +1,123 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * OS memory management abstractions for Windows kernel.
+ */
+
+
+#ifndef _OS_MEMORY_H_
+#error "Must not be included directly. Include os_memory.h instead"
+#endif
+
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+
+void * __stdcall
+EngAllocMem(unsigned long Flags,
+ unsigned long MemSize,
+ unsigned long Tag);
+
+void __stdcall
+EngFreeMem(void *Mem);
+
+#define os_malloc(_size) EngAllocMem(0, _size, 'D3AG')
+#define os_calloc(_count, _size) EngAllocMem(1, (_count)*(_size), 'D3AG')
+#define _os_free(_ptr) EngFreeMem(_ptr)
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+
+void *
+ExAllocatePool(unsigned long PoolType,
+ size_t NumberOfBytes);
+
+void
+ExFreePool(void *P);
+
+#define os_malloc(_size) ExAllocatePool(0, _size)
+#define _os_free(_ptr) ExFreePool(_ptr)
+
+static INLINE void *
+os_calloc(unsigned count, unsigned size)
+{
+ void *ptr = os_malloc(count * size);
+ if (ptr) {
+ memset(ptr, 0, count * size);
+ }
+ return ptr;
+}
+
+#else
+
+#error "Unsupported subsystem"
+
+#endif
+
+
+static INLINE void
+os_free( void *ptr )
+{
+ if (ptr) {
+ _os_free(ptr);
+ }
+}
+
+
+static INLINE void *
+os_realloc(void *old_ptr, unsigned old_size, unsigned new_size)
+{
+ void *new_ptr = NULL;
+
+ if (new_size != 0) {
+ unsigned copy_size = old_size < new_size ? old_size : new_size;
+ new_ptr = os_malloc( new_size );
+ if (new_ptr && old_ptr && copy_size) {
+ memcpy(new_ptr, old_ptr, copy_size);
+ }
+ }
+
+ os_free(old_ptr);
+
+ return new_ptr;
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#include "os_memory_aligned.h"
diff --git a/src/gallium/auxiliary/os/os_misc.c b/src/gallium/auxiliary/os/os_misc.c
new file mode 100644
index 0000000..3849880
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_misc.c
@@ -0,0 +1,188 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2010 Vmware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include "os_misc.h"
+
+#include <stdarg.h>
+
+
+#ifdef PIPE_SUBSYSTEM_WINDOWS_DISPLAY
+
+#include <windows.h>
+#include <winddi.h>
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_CE)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <types.h>
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
+#endif
+#include <windows.h>
+#include <stdio.h>
+
+#else
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#endif
+
+
+#ifdef PIPE_SUBSYSTEM_WINDOWS_DISPLAY
+static INLINE void
+_EngDebugPrint(const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format);
+ EngDebugPrint("", (PCHAR)format, ap);
+ va_end(ap);
+}
+#endif
+
+
+void
+os_log_message(const char *message)
+{
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+ _EngDebugPrint("%s", message);
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+ OutputDebugStringA(message);
+ if(GetConsoleWindow() && !IsDebuggerPresent()) {
+ fflush(stdout);
+ fputs(message, stderr);
+ fflush(stderr);
+ }
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_CE)
+ wchar_t *wide_format;
+ long wide_str_len;
+ /* Format is ascii - needs to be converted to wchar_t for printing */
+ wide_str_len = MultiByteToWideChar(CP_ACP, 0, message, -1, NULL, 0);
+ wide_format = (wchar_t *) malloc((wide_str_len+1) * sizeof(wchar_t));
+ if (wide_format) {
+ MultiByteToWideChar(CP_ACP, 0, message, -1,
+ wide_format, wide_str_len);
+ NKDbgPrintfW(wide_format, wide_format);
+ free(wide_format);
+ }
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+ /* TODO */
+#else /* !PIPE_SUBSYSTEM_WINDOWS */
+ fflush(stdout);
+ fputs(message, stderr);
+#endif
+}
+
+
+#ifdef PIPE_SUBSYSTEM_WINDOWS_DISPLAY
+static const char *
+find(const char *start, const char *end, char c)
+{
+ const char *p;
+ for(p = start; !end || p != end; ++p) {
+ if(*p == c)
+ return p;
+ if(*p < 32)
+ break;
+ }
+ return NULL;
+}
+
+static int
+compare(const char *start, const char *end, const char *s)
+{
+ const char *p, *q;
+ for(p = start, q = s; p != end && *q != '\0'; ++p, ++q) {
+ if(*p != *q)
+ return 0;
+ }
+ return p == end && *q == '\0';
+}
+
+static void
+copy(char *dst, const char *start, const char *end, size_t n)
+{
+ const char *p;
+ char *q;
+ for(p = start, q = dst, n = n - 1; p != end && n; ++p, ++q, --n)
+ *q = *p;
+ *q = '\0';
+}
+#endif
+
+
+const char *
+os_get_option(const char *name)
+{
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+ /* EngMapFile creates the file if it does not exists, so it must either be
+ * disabled on release versions (or put in a less conspicuous place). */
+#ifdef DEBUG
+ const char *result = NULL;
+ ULONG_PTR iFile = 0;
+ const void *pMap = NULL;
+ const char *sol, *eol, *sep;
+ static char output[1024];
+
+ pMap = EngMapFile(L"\\??\\c:\\gallium.cfg", 0, &iFile);
+ if(pMap) {
+ sol = (const char *)pMap;
+ while(1) {
+ /* TODO: handle LF line endings */
+ eol = find(sol, NULL, '\r');
+ if(!eol || eol == sol)
+ break;
+ sep = find(sol, eol, '=');
+ if(!sep)
+ break;
+ if(compare(sol, sep, name)) {
+ copy(output, sep + 1, eol, sizeof(output));
+ result = output;
+ break;
+ }
+ sol = eol + 2;
+ }
+ EngUnmapFile(iFile);
+ }
+ return result;
+#else
+ return NULL;
+#endif
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_CE) || defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+ /* TODO: implement */
+ return NULL;
+#else
+ return getenv(name);
+#endif
+}
+
diff --git a/src/gallium/auxiliary/os/os_misc.h b/src/gallium/auxiliary/os/os_misc.h
new file mode 100644
index 0000000..56e48ca
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_misc.h
@@ -0,0 +1,95 @@
+/**************************************************************************
+ *
+ * Copyright 2010 Vmware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * Miscellaneous OS services.
+ */
+
+
+#ifndef _OS_MISC_H_
+#define _OS_MISC_H_
+
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Trap into the debugger.
+ */
+#if (defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)) && defined(PIPE_CC_GCC)
+# define os_break() __asm("int3")
+#elif defined(PIPE_CC_MSVC)
+# define os_break() __debugbreak()
+#elif defined(PIPE_OS_UNIX)
+# include <signal.h> /* for kill() */
+# include <unistd.h> /* for getpid() */
+# define os_break() kill(getpid(), SIGTRAP)
+#elif defined(PIPE_OS_EMBEDDED)
+void os_break(void);
+#else
+# define os_break() abort()
+#endif
+
+
+/*
+ * Abort the program.
+ */
+#if defined(DEBUG) || defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+# define os_abort() os_break()
+#elif defined(PIPE_OS_EMBEDDED)
+void os_abort(void);
+#else
+# define os_abort() abort()
+#endif
+
+
+/*
+ * Output a message. Message should preferably end in a newline.
+ */
+void
+os_log_message(const char *message);
+
+
+/*
+ * Get an option. Should return NULL if specified option is not set.
+ */
+const char *
+os_get_option(const char *name);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _OS_MISC_H_ */
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