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bpf passthrough gen in codegen

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Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>
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varun-r-mallya
2025-10-22 03:45:54 +05:30
parent 21cea97d78
commit adf32560a0
2 changed files with 19 additions and 19 deletions
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19
pythonbpf/vmlinux_parser/import_detector.py
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@ -77,28 +77,9 @@ def detect_import_statement(tree: ast.AST) -> list[tuple[str, ast.ImportFrom]]:
return vmlinux_imports
def bpf_passthrough_gen(module):
i32_ty = ir.IntType(32)
ptr_ty = ir.PointerType(ir.IntType(8))
fnty = ir.FunctionType(ptr_ty, [i32_ty, ptr_ty])
# Declare the intrinsic
passthrough = ir.Function(module, fnty, "llvm.bpf.passthrough.p0.p0")
# Set function attributes
# TODO: the ones commented are supposed to be there but cannot be added due to llvmlite limitations at the moment
# passthrough.attributes.add("nofree")
# passthrough.attributes.add("nosync")
passthrough.attributes.add("nounwind")
# passthrough.attributes.add("memory(none)")
return passthrough
def vmlinux_proc(tree: ast.AST, module):
import_statements = detect_import_statement(tree)
bpf_passthrough_gen(module)
# initialise dependency handler
handler = DependencyHandler()
# initialise assignment dictionary of name to type