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fxconv: be even smarter with toolchain/arch detection

This commit is contained in:
Lephenixnoir 2019-09-12 18:20:14 +02:00
parent 15712b4f5b
commit 7cc4199342
Signed by untrusted user: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
1 changed files with 25 additions and 7 deletions
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32
fxconv/fxconv.py
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@ -660,6 +660,9 @@ def convert(input, params, target, output=None, model=None):
if "name" not in params:
raise FxconvError(f"no name specified for conversion '{input}'")
if target["arch"] is None:
target["arch"] = model
if "type" not in params:
raise FxconvError(f"missing type in conversion '{input}'")
elif params["type"] == "binary":
@ -682,20 +685,28 @@ def elf(data, output, symbol, toolchain=None, arch=None, section=None):
The symbol name must have a leading underscore if it is to be declared and
used from a C program.
The toolchain can be any target triplet for which the compiler is
available. The architecture is deduced from some typical triplets;
otherwise it can be set, usually as "sh3" or "sh4-nofpu". This affects the
--binary-architecture flag of objcopy. If arch is set to "fx" or "cg", this
function tries to be smart and:
* Uses the name of the compiler if it contains a full architecture name
such as "sh3", "sh4" or "sh4-nofpu";
* Uses "sh3" for fx9860g and "sh4-nofpu" for fxcg50 if the toolchain is
"sh-elf", which is a custom set;
* Fails otherwise.
The section name can be specified, along with its flags. A typical example
would be section=".rodata,contents,alloc,load,readonly,data", which is the
default.
The architecture can be either "sh3" or "sh4". This affects the choice of
the toolchain (sh3eb-elf-objcopy versus sh4eb-nofpu-elf-objcopy) and the
--binary-architecture flag of objcopy.
Arguments:
data -- A bytes-like object with data to embed into the object file
output -- Name of output file
symbol -- Chosen symbol name
toolchain -- Target triplet [default: "sh3eb-elf"]
arch -- Target architecture [default: from toolchain, if trivial]
arch -- Target architecture [default: try to guess]
section -- Target section [default: above variation of .rodata]
Produces an output file and returns nothing.
@ -706,9 +717,16 @@ def elf(data, output, symbol, toolchain=None, arch=None, section=None):
if section is None:
section = ".rodata,contents,alloc,load,readonly,data"
if arch is None and toolchain in "sh3eb-elf sh4eb-elf sh4eb-nofpu-elf":
if arch in ["fx", "cg", None] and toolchain in ["sh3eb-elf", "sh4eb-elf",
"sh4eb-nofpu-elf"]:
arch = toolchain.replace("eb-", "-")[:-4]
if arch is None:
elif arch == "fx" and toolchain == "sh-elf":
arch = "sh3"
elif arch == "cg" and toolchain == "sh-elf":
arch = "sh4-nofpu"
elif arch in ["fx", "cg", None]:
raise FxconvError(f"non-trivial architecture for {toolchain} must be "+
"specified")