varun-r-mallya/python-bpf
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add vmlinux expressions to eval expr

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varun-r-mallya
2025-10-21 03:24:27 +05:30
parent e499c29d42
commit 5955db88cf
8 changed files with 180 additions and 10 deletions
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25
pythonbpf/functions/functions_pass.py
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@ -311,7 +311,13 @@ def process_stmt(
def process_func_body(
module, builder, func_node, func, ret_type, map_sym_tab, structs_sym_tab, vmlinux_symtab
module,
builder,
func_node,
func,
ret_type,
map_sym_tab,
structs_sym_tab,
):
"""Process the body of a bpf function"""
# TODO: A lot. We just have print -> bpf_trace_printk for now
@ -350,7 +356,9 @@ def process_func_body(
builder.ret(ir.Constant(ir.IntType(64), 0))
def process_bpf_chunk(func_node, module, return_type, map_sym_tab, structs_sym_tab, vmlinux_symtab):
def process_bpf_chunk(
func_node, module, return_type, map_sym_tab, structs_sym_tab
):
"""Process a single BPF chunk (function) and emit corresponding LLVM IR."""
func_name = func_node.name
@ -384,7 +392,13 @@ def process_bpf_chunk(func_node, module, return_type, map_sym_tab, structs_sym_t
builder = ir.IRBuilder(block)
process_func_body(
module, builder, func_node, func, ret_type, map_sym_tab, structs_sym_tab, vmlinux_symtab
module,
builder,
func_node,
func,
ret_type,
map_sym_tab,
structs_sym_tab,
)
return func
@ -394,7 +408,7 @@ def process_bpf_chunk(func_node, module, return_type, map_sym_tab, structs_sym_t
# ============================================================================
def func_proc(tree, module, chunks, map_sym_tab, structs_sym_tab, vmlinux_symtab):
def func_proc(tree, module, chunks, map_sym_tab, structs_sym_tab):
for func_node in chunks:
if is_global_function(func_node):
continue
@ -406,8 +420,7 @@ def func_proc(tree, module, chunks, map_sym_tab, structs_sym_tab, vmlinux_symtab
module,
ctypes_to_ir(infer_return_type(func_node)),
map_sym_tab,
structs_sym_tab,
vmlinux_symtab
structs_sym_tab
)