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Implement the following C API's: - isa_parse_str(..) - isa_parse_file(..) - isa_asm_result_destroy(..) Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com> Reviewed-by: @LingMan Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28869>
77 lines
2.5 KiB
Rust
77 lines
2.5 KiB
Rust
// Copyright © 2024 Igalia S.L.
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// SPDX-License-Identifier: MIT
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use crate::parser::*;
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use crate::util::EtnaAsmResultExt;
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use isa_bindings::*;
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use std::ffi::CStr;
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use std::os::raw::c_char;
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/// Shared implementation to interact with the asm parser
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///
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/// # Safety
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///
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/// `c_str` must point to a valid nul-termintated string not longer than `isize::MAX` bytes.
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/// See https://doc.rust-lang.org/std/ffi/struct.CStr.html#safety for further details.
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unsafe fn isa_parse(
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c_str: *const c_char,
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dual_16_mode: bool,
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func: impl FnOnce(&str, bool, &mut etna_asm_result),
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) -> *mut etna_asm_result {
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let mut result = Box::new(etna_asm_result::default());
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if c_str.is_null() {
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result.set_error("str pointer is NULL");
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return Box::into_raw(result);
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}
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// SAFETY: As per the safety section, the caller has to uphold these requirements
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let c_str_safe = unsafe { CStr::from_ptr(c_str) };
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if let Ok(str) = c_str_safe.to_str() {
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func(str, dual_16_mode, &mut result);
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} else {
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result.set_error("Failed to convert CStr to &str");
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result.success = false;
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}
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Box::into_raw(result)
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}
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/// # Safety
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///
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/// `c_str` must point to a valid nul-termintated string not longer than `isize::MAX` bytes.
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/// See https://doc.rust-lang.org/std/ffi/struct.CStr.html#safety for further details.
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#[no_mangle]
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pub unsafe extern "C" fn isa_parse_str(
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c_str: *const c_char,
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dual_16_mode: bool,
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) -> *mut etna_asm_result {
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// SAFETY: As per the safety section, the caller has to uphold these requirements
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unsafe { isa_parse(c_str, dual_16_mode, asm_process_str) }
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}
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/// # Safety
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///
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/// `c_filepath` must point to a valid nul-termintated string not longer than `isize::MAX` bytes.
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/// See https://doc.rust-lang.org/std/ffi/struct.CStr.html#safety for further details.
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#[no_mangle]
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pub unsafe extern "C" fn isa_parse_file(
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c_filepath: *const c_char,
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dual_16_mode: bool,
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) -> *mut etna_asm_result {
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// SAFETY: As per the safety section, the caller has to uphold these requirements
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unsafe { isa_parse(c_filepath, dual_16_mode, asm_process_file) }
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}
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/// # Safety
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///
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/// `result` must have previously been obtained from `isa_parse_str` or `isa_parse_file`.
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#[no_mangle]
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pub unsafe extern "C" fn isa_asm_result_destroy(result: *mut etna_asm_result) {
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// SAFETY: As per the safety section, the caller has to uphold these requirements
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let mut r = unsafe { Box::from_raw(result) };
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r.dealloc_instructions();
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r.dealloc_error();
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}
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