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Shim clock_gettime

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This commit is contained in:
Aaron Culliney 2014-06-21 10:00:58 -07:00
parent 686d4e9b63
commit b9cdf663a0
3 changed files with 70 additions and 0 deletions
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6
Apple2Mac/Apple2Mac.xcodeproj/project.pbxproj
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@ -7,6 +7,7 @@
objects = {
/* Begin PBXBuildFile section */
7751DD4E1955EFF5007F8BDF /* darwin-shim.c in Sources */ = {isa = PBXBuildFile; fileRef = 7751DD4D1955EFF5007F8BDF /* darwin-shim.c */; };
77A913BE19500F6000F5B902 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 77A913BD19500F6000F5B902 /* QuartzCore.framework */; };
77A913C019500F6000F5B902 /* GLKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 77A913BF19500F6000F5B902 /* GLKit.framework */; };
77A913C219500F6000F5B902 /* OpenGL.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 77A913C119500F6000F5B902 /* OpenGL.framework */; };
@ -218,6 +219,8 @@
/* End PBXContainerItemProxy section */
/* Begin PBXFileReference section */
7751DD4B1955EB60007F8BDF /* darwin-shim.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "darwin-shim.h"; sourceTree = "<group>"; };
7751DD4D1955EFF5007F8BDF /* darwin-shim.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "darwin-shim.c"; sourceTree = "<group>"; };
77A913BA19500F6000F5B902 /* Apple2Mac.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Apple2Mac.app; sourceTree = BUILT_PRODUCTS_DIR; };
77A913BD19500F6000F5B902 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
77A913BF19500F6000F5B902 /* GLKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = GLKit.framework; path = System/Library/Frameworks/GLKit.framework; sourceTree = SDKROOT; };
@ -1443,6 +1446,8 @@
77A9163A1950108F00F5B902 /* common.h */,
77A9163B1950108F00F5B902 /* cpu-supp.c */,
77A9163C1950108F00F5B902 /* cpu.h */,
7751DD4D1955EFF5007F8BDF /* darwin-shim.c */,
7751DD4B1955EB60007F8BDF /* darwin-shim.h */,
77A9163E1950108F00F5B902 /* disk.c */,
77A9163F1950108F00F5B902 /* disk.h */,
77A916401950108F00F5B902 /* display.c */,
@ -1726,6 +1731,7 @@
77A9141C19500F6100F5B902 /* CCActionInstant.m in Sources */,
77A9141F19500F6100F5B902 /* CCActionInterval.m in Sources */,
77A9144D19500F6200F5B902 /* CCNodeColor.m in Sources */,
7751DD4E1955EFF5007F8BDF /* darwin-shim.c in Sources */,
77A916811950108F00F5B902 /* debug.l in Sources */,
77A914DB19500F6300F5B902 /* CCAppDelegate.m in Sources */,
77A9143B19500F6200F5B902 /* CCDirector.m in Sources */,

39
src/darwin-shim.c Normal file
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@ -0,0 +1,39 @@
/*
* Apple // emulator for *nix
*
* This software package is subject to the GNU General Public License
* version 2 or later (your choice) as published by the Free Software
* Foundation.
*
* THERE ARE NO WARRANTIES WHATSOEVER.
*
*/
#include "common.h"
#include "darwin-shim.h"
#include <mach/mach_time.h>
// Derived from http://stackoverflow.com/questions/5167269/clock-gettime-alternative-in-mac-os-x
// 2014/06/21
#define ORWL_NANO (+1.0E-9)
#define ORWL_GIGA UINT64_C(1000000000)
static double orwl_timebase = 0.0;
static uint64_t orwl_timestart = 0;
__attribute__((constructor))
static void __init_darwin_shim() {
mach_timebase_info_data_t tb = { 0 };
mach_timebase_info(&tb);
orwl_timebase = tb.numer;
orwl_timebase /= tb.denom;
orwl_timestart = mach_absolute_time();
}
int clock_gettime(int clk_id, struct timespec *tp) {
double diff = (mach_absolute_time() - orwl_timestart) * orwl_timebase;
tp->tv_sec = diff * ORWL_NANO;
tp->tv_nsec = diff - (tp->tv_sec * ORWL_GIGA);
return 0;
}

25
src/darwin-shim.h Normal file
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@ -0,0 +1,25 @@
/*
* Apple // emulator for *nix
*
* This software package is subject to the GNU General Public License
* version 2 or later (your choice) as published by the Free Software
* Foundation.
*
* THERE ARE NO WARRANTIES WHATSOEVER.
*
*/
#ifndef _CPU_REGS_H_
#define _CPU_REGS_H_
#include "common.h"
#ifdef __APPLE__
#define CLOCK_MONOTONIC 1
int clock_gettime(int, struct timespec *);
#endif // __APPLE__
#endif