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Add has_handler to HelperHandlerRegistry

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This commit is contained in:
Pragyansh Chaturvedi
2025-10-01 23:38:38 +05:30
parent 28cc0c5eec
commit 929eef31ef
3 changed files with 11 additions and 6 deletions
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6
pythonbpf/expr_pass.py
View File

@ -50,21 +50,21 @@ def eval_expr(func, module, builder, expr, local_sym_tab, map_sym_tab, structs_s
return val, local_sym_tab[expr.args[0].id][1]
# check for helpers
if expr.func.id in HelperHandlerRegistry._handlers:
if HelperHandlerRegistry.has_handler(expr.func.id):
return handle_helper_call(
expr, module, builder, func, local_sym_tab, map_sym_tab, structs_sym_tab, local_var_metadata)
elif isinstance(expr.func, ast.Attribute):
print(f"Handling method call: {ast.dump(expr.func)}")
if isinstance(expr.func.value, ast.Call) and isinstance(expr.func.value.func, ast.Name):
method_name = expr.func.attr
if method_name in HelperHandlerRegistry._handlers:
if HelperHandlerRegistry.has_handler(method_name):
return handle_helper_call(
expr, module, builder, func, local_sym_tab, map_sym_tab, structs_sym_tab, local_var_metadata)
elif isinstance(expr.func.value, ast.Name):
obj_name = expr.func.value.id
method_name = expr.func.attr
if obj_name in map_sym_tab:
if method_name in HelperHandlerRegistry._handlers:
if HelperHandlerRegistry.has_handler(method_name):
return handle_helper_call(
expr, module, builder, func, local_sym_tab, map_sym_tab, structs_sym_tab, local_var_metadata)
elif isinstance(expr, ast.Attribute):

6
pythonbpf/functions_pass.py
View File

@ -113,7 +113,7 @@ def handle_assign(func, module, builder, stmt, map_sym_tab, local_sym_tab, struc
print(f"Assigned {call_type} constant "
f"{rval.args[0].value} to {var_name}")
# local_sym_tab[var_name] = var
elif call_type in HelperHandlerRegistry._handlers:
elif HelperHandlerRegistry.has_handler(call_type):
# var = builder.alloca(ir.IntType(64), name=var_name)
# var.align = 8
val = handle_helper_call(
@ -154,7 +154,7 @@ def handle_assign(func, module, builder, stmt, map_sym_tab, local_sym_tab, struc
method_name = rval.func.attr
if map_name in map_sym_tab:
map_ptr = map_sym_tab[map_name]
if method_name in HelperHandlerRegistry._handlers:
if HelperHandlerRegistry.has_handler(method_name):
val = handle_helper_call(
rval, module, builder, func, local_sym_tab, map_sym_tab, structs_sym_tab, local_var_metadata)
# var = builder.alloca(ir.IntType(64), name=var_name)
@ -344,7 +344,7 @@ def allocate_mem(module, builder, body, func, ret_type, map_sym_tab, local_sym_t
var.align = ir_type.width // 8
print(
f"Pre-allocated variable {var_name} of type {call_type}")
elif call_type in HelperHandlerRegistry._handlers:
elif HelperHandlerRegistry.has_handler(call_type):
# Assume return type is int64 for now
ir_type = ir.IntType(64)
var = builder.alloca(ir_type, name=var_name)

5
pythonbpf/helper/helper_utils.py
View File

@ -23,6 +23,11 @@ class HelperHandlerRegistry:
"""Get the handler function for a helper"""
return cls._handlers.get(helper_name)
@classmethod
def has_handler(cls, helper_name):
"""Check if a handler function is registered for a helper"""
return helper_name in cls._handlers
def get_var_ptr_from_name(var_name, local_sym_tab):
"""Get a pointer to a variable from the symbol table."""