Enable build on Haiku target

Makefile

@@ -107,7 +107,11 @@ ifneq (,$(findstring unix,$(platform)))
    TARGET := $(TARGET_NAME)_libretro.$(EXT)
 	SHARED := -shared -Wl,--version-script=link.T
 	LDFLAGS +=  -Wl,--no-undefined
+ifneq (,$(findstring Haiku,$(shell uname -s)))
+	LIBS += -lroot
+else
 	LIBS += -lrt
+endif
 
 	fpic = -fPIC
 

core/hw/mem/_vmem.cpp

@@ -723,13 +723,21 @@ void _vmem_bm_reset_nvmem(void)
    VirtualFree(p_sh4rcb,sizeof(p_sh4rcb->fpcb),MEM_DECOMMIT);
 #else
    mprotect(p_sh4rcb, sizeof(p_sh4rcb->fpcb), PROT_NONE);
+#ifdef __HAIKU__
+   posix_madvise(p_sh4rcb,sizeof(p_sh4rcb->fpcb),POSIX_MADV_DONTNEED);
+#else
    madvise(p_sh4rcb,sizeof(p_sh4rcb->fpcb),MADV_DONTNEED);
+#endif
 #ifdef MADV_REMOVE
    madvise(p_sh4rcb,sizeof(p_sh4rcb->fpcb),MADV_REMOVE);
+#else
+#ifdef __HAIKU__
+   posix_madvise(p_sh4rcb,sizeof(p_sh4rcb->fpcb),POSIX_MADV_DONTNEED);
 #else
    /* OSX, IOS */
    madvise(p_sh4rcb,sizeof(p_sh4rcb->fpcb),MADV_FREE);
 #endif
+#endif
 #endif
 
 	printf("Freeing fpcb\n");

core/hw/mem/_vmem.h

 #pragma once
 #include "types.h"
 
+#if defined(__HAIKU__)
+#include <posix/sys/mman.h>
+#endif
+
 //Typedef's
 //ReadMem 
 typedef u8 DYNACALL _vmem_ReadMem8FP(u32 Address);
@@ -70,4 +74,4 @@ static inline bool _nvmem_enabled() {
 	return virt_ram_base != 0;
 }
 
-void _vmem_bm_reset();
\ No newline at end of file
+void _vmem_bm_reset();

core/hw/sh4/dyna/driver.cpp

@@ -38,6 +38,8 @@ u8 SH4_TCB[CODE_SIZE+4096]
 	__attribute__((section(".text")));
 #elif defined(__MACH__)
 	__attribute__((section("__TEXT,.text")));
+#elif defined(__HAIKU__)
+	__attribute__((section(".text")));
 #else
 	#error SH4_TCB ALLOC
 #endif

core/libretro/common.cpp

@@ -9,9 +9,11 @@
 
 #if !defined(TARGET_NO_EXCEPTIONS)
 #ifndef _WIN32
+#ifndef __HAIKU__
 #include <ucontext.h>
 #endif
 #endif
+#endif
 
 #if defined(_ANDROID)
 #include <asm/sigcontext.h>
@@ -338,7 +340,7 @@ static void sigill_handler(int sn, siginfo_t * si, void *segfault_ctx)
 }
 #endif
 
-#if defined(__MACH__) || defined(__linux__)
+#if defined(__MACH__) || defined(__linux__) || defined(__HAIKU__)
 //#define LOG_SIGHANDLER
 
 static void signal_handler(int sn, siginfo_t * si, void *segfault_ctx)