Kamek/Newer now support dynamic linking

1 files changed, 41 insertions, 32 deletions

diff --git a/tools/hooks.py b/tools/hooks.py
index 13c4e19..388efcb 100755
--- a/tools/hooks.py
+++ b/tools/hooks.py
@@ -3,14 +3,18 @@ import struct
 

 u32 = struct.Struct('>I')

 

+BRANCH_TYPES = ['b', 'bl', 'ba', 'bla']

 def make_branch_insn(fromAddr, toAddr, branchType):

-	branchTypes = ['b', 'bl', 'ba', 'bla']

-	if branchType not in branchTypes:

+	if branchType not in BRANCH_TYPES:

 		raise ValueError, 'invalid branch type: %s' % branchType

 	

-	extra = branchTypes.index(branchType)

+	extra = BRANCH_TYPES.index(branchType)

 	

-	distance = toAddr - fromAddr

+	if toAddr == -1:

+		distance = 0 # placeholder, will be added later by relocs

+	else:

+		distance = toAddr - fromAddr

+

 	if distance >= 0x2000000 or distance <= -0x2000000:

 		raise ValueError, 'branching too far: %08x to %08x' % (fromAddr, toAddr)

 	

@@ -44,7 +48,7 @@ class Hook(object):
 			self.context.hooks.append(self)

 		

 		# validate the hook's data

-		current_config_name = builder._config_short_name

+		current_config_name = builder.config_short_name

 		

 		for field in self.required_data:

 			field = field.replace('%CONFIG%', current_config_name)

@@ -65,7 +69,7 @@ class BasicPatchHook(Hook):
 		Hook.__init__(self, builder, module, data)

 	

 	def create_patches(self):

-		addr = self.data['addr_%s' % self.builder._config_short_name]

+		addr = self.data['addr_%s' % self.builder.config_short_name]

 		

 		hex_data = self.data['data']

 		

@@ -75,7 +79,7 @@ class BasicPatchHook(Hook):
 		

 		patch = binascii.unhexlify(hex_data)

 		

-		self.builder._add_patch(addr, patch)

+		self.builder.add_patch(addr, patch)

 

 

 

@@ -91,19 +95,23 @@ class BranchInsnHook(Hook):
 		try:

 			target_func = self.data['target_func']

 		except KeyError:

-			target_func = self.data['target_func_%s' % self.builder._config_short_name]

-		

-		if isinstance(target_func, str):

-			target_func = self.builder._find_func_by_symbol(target_func)

+			target_func = self.data['target_func_%s' % self.builder.config_short_name]

+

+		src_addr = self.data['src_addr_%s' % self.builder.config_short_name]

+		is_symbol_name = isinstance(target_func, str)

+

+		if is_symbol_name:

+			target_func = self.builder.find_func_by_symbol(target_func)

+

+		if is_symbol_name and self.builder.dynamic_link:

+			branch_insn = make_branch_insn(src_addr, -1, self.data['branch_type'])

+			self.builder.add_patch(src_addr, u32.pack(branch_insn))

+

+			dylink = self.builder.dynamic_link

+			dylink.add_reloc(dylink.R_PPC_REL24, src_addr, target_func)

 		else:

-			# assume it's an address

-			pass

-		

-		

-		src_addr = self.data['src_addr_%s' % self.builder._config_short_name]

-		branch_insn = make_branch_insn(src_addr, target_func, self.data['branch_type'])

-		

-		self.builder._add_patch(src_addr, u32.pack(branch_insn))

+			branch_insn = make_branch_insn(src_addr, target_func, self.data['branch_type'])

+			self.builder.add_patch(src_addr, u32.pack(branch_insn))

 

 

 

@@ -119,18 +127,19 @@ class AddFunctionPointerHook(Hook):
 		try:

 			target_func = self.data['target_func']

 		except KeyError:

-			target_func = self.data['target_func_%s' % self.builder._config_short_name]

-		

-		if isinstance(target_func, str):

-			target_func = self.builder._find_func_by_symbol(target_func)

+			target_func = self.data['target_func_%s' % self.builder.config_short_name]

+

+		src_addr = self.data['src_addr_%s' % self.builder.config_short_name]

+		is_symbol_name = isinstance(target_func, str)

+

+		if is_symbol_name:

+			target_func = self.builder.find_func_by_symbol(target_func)

+

+		if is_symbol_name and self.builder.dynamic_link:

+			dylink = self.builder.dynamic_link

+			dylink.add_reloc(dylink.R_PPC_ADDR32, src_addr, target_func)

 		else:

-			# assume it's an address

-			pass

-		

-		

-		src_addr = self.data['src_addr_%s' % self.builder._config_short_name]

-		

-		self.builder._add_patch(src_addr, u32.pack(target_func))

+			self.builder.add_patch(src_addr, u32.pack(target_func))

 

 

 

@@ -143,7 +152,7 @@ class NopInsnHook(Hook):
 		Hook.__init__(self, builder, module, data)

 	

 	def create_patches(self):

-		area = self.data['area_%s' % self.builder._config_short_name]

+		area = self.data['area_%s' % self.builder.config_short_name]

 		

 		if isinstance(area, list):

 			addr, end = area

@@ -153,7 +162,7 @@ class NopInsnHook(Hook):
 			addr = area

 			nop_patch = '\x60\x00\x00\x00'

 		

-		self.builder._add_patch(addr, nop_patch)

+		self.builder.add_patch(addr, nop_patch)