Various PowerPC fixes

* Removed atomic operations placeholders for modern ones
* Fix chrpscript & hfsmaps location for CDBootImage (haiku-boot-cd target)
* add of_blocks & of_blocksize openfirmware call

Change-Id: Iaaddc2c566d108976ac5e5e08caea1fc59523e06
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6987
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

build/jam/images/CDBootImage

@@ -24,6 +24,8 @@ if $(TARGET_ARCH) = ppc {
 	local chrpscript = ofboot.chrp ;
 	# HFS creator and application type mapping for mkisofs
 	local hfsmaps = hfs.map ;
+	SEARCH on $(chrpscript) = [ FDirName $(HAIKU_TOP) data boot openfirmware ] ;
+	SEARCH on $(hfsmaps) = [ FDirName $(HAIKU_TOP) data boot openfirmware ] ;
 
 	BuildCDBootPPCImage $(HAIKU_CD_BOOT_IMAGE) : $(hfsmaps)
 		: $(elfloader) : $(coffloader) : $(chrpscript) : $(extras) ;

headers/private/kernel/arch/ppc/arch_atomic.h

@@ -43,68 +43,4 @@ memory_full_barrier_inline(void)
 #define memory_full_barrier		memory_full_barrier_inline
 
 
-static inline void
-atomic_set_inline(int32* value, int32 newValue)
-{
-	memory_write_barrier();
-	*(volatile int32*)value = newValue;
-}
-
-
-static inline int32
-atomic_get_and_set_inline(int32* value, int32 newValue)
-{
-	// BIG TODO: PowerPC Atomic get and set
-//	asm volatile("xchgl %0, (%1)"
-//		: "+r" (newValue)
-//		: "r" (value)
-//		: "memory");
-	return newValue;
-}
-
-
-static inline int32
-atomic_test_and_set_inline(int32* value, int32 newValue, int32 testAgainst)
-{
-	// BIG TODO: PowerPC Atomic test and set inline
-//	asm volatile("lock; cmpxchgl %2, (%3)"
-//		: "=a" (newValue)
-//		: "0" (testAgainst), "r" (newValue), "r" (value)
-//		: "memory");
-	return newValue;
-}
-
-
-static inline int32
-atomic_add_inline(int32* value, int32 newValue)
-{
-	// BIG TODO: PowerPC Atomic add inline
-//	asm volatile("lock; xaddl %0, (%1)"
-//		: "+r" (newValue)
-//		: "r" (value)
-//		: "memory");
-	return newValue;
-}
-
-
-static inline int32
-atomic_get_inline(int32* value)
-{
-	int32 newValue = *(volatile int32*)value;
-	memory_read_barrier();
-	return newValue;
-}
-
-
-#define atomic_set				atomic_set_inline
-#define atomic_get_and_set		atomic_get_and_set_inline
-#ifndef atomic_test_and_set
-#	define atomic_test_and_set	atomic_test_and_set_inline
-#endif
-#ifndef atomic_add
-#	define atomic_add			atomic_add_inline
-#endif
-#define atomic_get				atomic_get_inline
-
-
 #endif	// _KERNEL_ARCH_PPC_ATOMIC_H

headers/private/kernel/platform/openfirmware/openfirmware.h

@@ -66,6 +66,8 @@ extern void of_close(intptr_t handle);
 extern intptr_t of_read(intptr_t handle, void *buffer, intptr_t bufferSize);
 extern intptr_t of_write(intptr_t handle, const void *buffer, intptr_t bufferSize);
 extern intptr_t of_seek(intptr_t handle, off_t pos);
+extern intptr_t of_blocks(intptr_t handle);
+extern intptr_t of_block_size(intptr_t handle);
 
 /* memory functions */
 extern intptr_t of_release(void *virtualAddress, intptr_t size);

src/system/kernel/platform/openfirmware/openfirmware.cpp

@@ -493,6 +493,42 @@ of_seek(intptr_t handle, off_t pos)
 }
 
 
+intptr_t
+of_blocks(intptr_t handle)
+{
+	struct {
+		const char      *name;
+		intptr_t        num_args;
+		intptr_t        num_returns;
+		intptr_t        handle;
+		intptr_t        result;
+		intptr_t        blocks;
+	} args = {"#blocks", 2, 1, handle, 0, 0};
+
+	if (gCallOpenFirmware(&args) == OF_FAILED)
+		return OF_FAILED;
+	return args.blocks;
+}
+
+
+intptr_t
+of_block_size(intptr_t handle)
+{
+	struct {
+		const char      *name;
+		intptr_t        num_args;
+		intptr_t        num_returns;
+		intptr_t        handle;
+		intptr_t        result;
+		intptr_t        size;
+	} args = {"block-size", 2, 1, handle, 0, 0};
+
+	if (gCallOpenFirmware(&args) == OF_FAILED)
+		return OF_FAILED;
+	return args.size;
+}
+
+
 // memory functions