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Commit | Line | Data |
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b7449926 | 1 | #![allow(non_snake_case)] |
b7449926 | 2 | |
b7449926 | 3 | pub use self::AtomicRmwBinOp::*; |
b7449926 | 4 | pub use self::CallConv::*; |
dfeec247 XL |
5 | pub use self::CodeGenOptSize::*; |
6 | pub use self::IntPredicate::*; | |
b7449926 | 7 | pub use self::Linkage::*; |
dfeec247 XL |
8 | pub use self::MetadataType::*; |
9 | pub use self::RealPredicate::*; | |
b7449926 | 10 | |
60c5eb7d | 11 | use libc::c_uint; |
b7449926 | 12 | use rustc_data_structures::small_c_str::SmallCStr; |
60c5eb7d | 13 | use rustc_llvm::RustString; |
dfeec247 XL |
14 | use std::cell::RefCell; |
15 | use std::ffi::CStr; | |
16 | use std::str::FromStr; | |
17 | use std::string::FromUtf8Error; | |
b7449926 XL |
18 | |
19 | pub mod archive_ro; | |
20 | pub mod diagnostic; | |
21 | mod ffi; | |
22 | ||
23 | pub use self::ffi::*; | |
24 | ||
25 | impl LLVMRustResult { | |
26 | pub fn into_result(self) -> Result<(), ()> { | |
27 | match self { | |
28 | LLVMRustResult::Success => Ok(()), | |
29 | LLVMRustResult::Failure => Err(()), | |
30 | } | |
31 | } | |
32 | } | |
33 | ||
dfeec247 | 34 | pub fn AddFunctionAttrStringValue(llfn: &'a Value, idx: AttributePlace, attr: &CStr, value: &CStr) { |
b7449926 | 35 | unsafe { |
dfeec247 | 36 | LLVMRustAddFunctionAttrStringValue(llfn, idx.as_uint(), attr.as_ptr(), value.as_ptr()) |
b7449926 XL |
37 | } |
38 | } | |
39 | ||
40 | #[derive(Copy, Clone)] | |
41 | pub enum AttributePlace { | |
42 | ReturnValue, | |
43 | Argument(u32), | |
44 | Function, | |
45 | } | |
46 | ||
47 | impl AttributePlace { | |
48 | pub fn as_uint(self) -> c_uint { | |
49 | match self { | |
50 | AttributePlace::ReturnValue => 0, | |
51 | AttributePlace::Argument(i) => 1 + i, | |
52 | AttributePlace::Function => !0, | |
53 | } | |
54 | } | |
55 | } | |
56 | ||
57 | #[derive(Copy, Clone, PartialEq)] | |
58 | #[repr(C)] | |
59 | pub enum CodeGenOptSize { | |
60 | CodeGenOptSizeNone = 0, | |
61 | CodeGenOptSizeDefault = 1, | |
62 | CodeGenOptSizeAggressive = 2, | |
63 | } | |
64 | ||
65 | impl FromStr for ArchiveKind { | |
66 | type Err = (); | |
67 | ||
68 | fn from_str(s: &str) -> Result<Self, Self::Err> { | |
69 | match s { | |
70 | "gnu" => Ok(ArchiveKind::K_GNU), | |
71 | "bsd" => Ok(ArchiveKind::K_BSD), | |
74b04a01 | 72 | "darwin" => Ok(ArchiveKind::K_DARWIN), |
b7449926 XL |
73 | "coff" => Ok(ArchiveKind::K_COFF), |
74 | _ => Err(()), | |
75 | } | |
76 | } | |
77 | } | |
78 | ||
b7449926 XL |
79 | pub fn SetInstructionCallConv(instr: &'a Value, cc: CallConv) { |
80 | unsafe { | |
81 | LLVMSetInstructionCallConv(instr, cc as c_uint); | |
82 | } | |
83 | } | |
84 | pub fn SetFunctionCallConv(fn_: &'a Value, cc: CallConv) { | |
85 | unsafe { | |
86 | LLVMSetFunctionCallConv(fn_, cc as c_uint); | |
87 | } | |
88 | } | |
89 | ||
90 | // Externally visible symbols that might appear in multiple codegen units need to appear in | |
91 | // their own comdat section so that the duplicates can be discarded at link time. This can for | |
92 | // example happen for generics when using multiple codegen units. This function simply uses the | |
93 | // value's name as the comdat value to make sure that it is in a 1-to-1 relationship to the | |
94 | // function. | |
0731742a | 95 | // For more details on COMDAT sections see e.g., http://www.airs.com/blog/archives/52 |
b7449926 XL |
96 | pub fn SetUniqueComdat(llmod: &Module, val: &'a Value) { |
97 | unsafe { | |
60c5eb7d XL |
98 | let name = get_value_name(val); |
99 | LLVMRustSetComdat(llmod, val, name.as_ptr().cast(), name.len()); | |
b7449926 XL |
100 | } |
101 | } | |
102 | ||
103 | pub fn UnsetComdat(val: &'a Value) { | |
104 | unsafe { | |
105 | LLVMRustUnsetComdat(val); | |
106 | } | |
107 | } | |
108 | ||
ba9703b0 | 109 | pub fn SetUnnamedAddress(global: &'a Value, unnamed: UnnamedAddr) { |
b7449926 | 110 | unsafe { |
ba9703b0 | 111 | LLVMSetUnnamedAddress(global, unnamed); |
b7449926 XL |
112 | } |
113 | } | |
114 | ||
115 | pub fn set_thread_local(global: &'a Value, is_thread_local: bool) { | |
116 | unsafe { | |
117 | LLVMSetThreadLocal(global, is_thread_local as Bool); | |
118 | } | |
119 | } | |
120 | pub fn set_thread_local_mode(global: &'a Value, mode: ThreadLocalMode) { | |
121 | unsafe { | |
122 | LLVMSetThreadLocalMode(global, mode); | |
123 | } | |
124 | } | |
125 | ||
126 | impl Attribute { | |
127 | pub fn apply_llfn(&self, idx: AttributePlace, llfn: &Value) { | |
128 | unsafe { LLVMRustAddFunctionAttribute(llfn, idx.as_uint(), *self) } | |
129 | } | |
130 | ||
131 | pub fn apply_callsite(&self, idx: AttributePlace, callsite: &Value) { | |
132 | unsafe { LLVMRustAddCallSiteAttribute(callsite, idx.as_uint(), *self) } | |
133 | } | |
134 | ||
135 | pub fn unapply_llfn(&self, idx: AttributePlace, llfn: &Value) { | |
136 | unsafe { LLVMRustRemoveFunctionAttributes(llfn, idx.as_uint(), *self) } | |
137 | } | |
138 | ||
139 | pub fn toggle_llfn(&self, idx: AttributePlace, llfn: &Value, set: bool) { | |
140 | if set { | |
141 | self.apply_llfn(idx, llfn); | |
142 | } else { | |
143 | self.unapply_llfn(idx, llfn); | |
144 | } | |
145 | } | |
146 | } | |
147 | ||
148 | // Memory-managed interface to object files. | |
149 | ||
150 | pub struct ObjectFile { | |
151 | pub llof: &'static mut ffi::ObjectFile, | |
152 | } | |
153 | ||
154 | unsafe impl Send for ObjectFile {} | |
155 | ||
156 | impl ObjectFile { | |
157 | // This will take ownership of llmb | |
158 | pub fn new(llmb: &'static mut MemoryBuffer) -> Option<ObjectFile> { | |
159 | unsafe { | |
160 | let llof = LLVMCreateObjectFile(llmb)?; | |
a1dfa0c6 | 161 | Some(ObjectFile { llof }) |
b7449926 XL |
162 | } |
163 | } | |
164 | } | |
165 | ||
166 | impl Drop for ObjectFile { | |
167 | fn drop(&mut self) { | |
168 | unsafe { | |
169 | LLVMDisposeObjectFile(&mut *(self.llof as *mut _)); | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | // Memory-managed interface to section iterators. | |
175 | ||
176 | pub struct SectionIter<'a> { | |
177 | pub llsi: &'a mut SectionIterator<'a>, | |
178 | } | |
179 | ||
180 | impl Drop for SectionIter<'a> { | |
181 | fn drop(&mut self) { | |
182 | unsafe { | |
183 | LLVMDisposeSectionIterator(&mut *(self.llsi as *mut _)); | |
184 | } | |
185 | } | |
186 | } | |
187 | ||
ba9703b0 | 188 | pub fn mk_section_iter(llof: &ffi::ObjectFile) -> SectionIter<'_> { |
b7449926 XL |
189 | unsafe { SectionIter { llsi: LLVMGetSections(llof) } } |
190 | } | |
191 | ||
192 | /// Safe wrapper around `LLVMGetParam`, because segfaults are no fun. | |
ba9703b0 | 193 | pub fn get_param(llfn: &Value, index: c_uint) -> &Value { |
b7449926 | 194 | unsafe { |
dfeec247 XL |
195 | assert!( |
196 | index < LLVMCountParams(llfn), | |
197 | "out of bounds argument access: {} out of {} arguments", | |
198 | index, | |
199 | LLVMCountParams(llfn) | |
200 | ); | |
b7449926 XL |
201 | LLVMGetParam(llfn, index) |
202 | } | |
203 | } | |
204 | ||
60c5eb7d | 205 | /// Safe wrapper for `LLVMGetValueName2` into a byte slice |
ba9703b0 | 206 | pub fn get_value_name(value: &Value) -> &[u8] { |
60c5eb7d XL |
207 | unsafe { |
208 | let mut len = 0; | |
209 | let data = LLVMGetValueName2(value, &mut len); | |
210 | std::slice::from_raw_parts(data.cast(), len) | |
211 | } | |
212 | } | |
213 | ||
214 | /// Safe wrapper for `LLVMSetValueName2` from a byte slice | |
215 | pub fn set_value_name(value: &Value, name: &[u8]) { | |
216 | unsafe { | |
217 | let data = name.as_ptr().cast(); | |
218 | LLVMSetValueName2(value, data, name.len()); | |
219 | } | |
220 | } | |
221 | ||
b7449926 | 222 | pub fn build_string(f: impl FnOnce(&RustString)) -> Result<String, FromUtf8Error> { |
dfeec247 | 223 | let sr = RustString { bytes: RefCell::new(Vec::new()) }; |
b7449926 XL |
224 | f(&sr); |
225 | String::from_utf8(sr.bytes.into_inner()) | |
226 | } | |
227 | ||
228 | pub fn twine_to_string(tr: &Twine) -> String { | |
229 | unsafe { | |
dfeec247 | 230 | build_string(|s| LLVMRustWriteTwineToString(tr, s)).expect("got a non-UTF8 Twine from LLVM") |
b7449926 XL |
231 | } |
232 | } | |
233 | ||
234 | pub fn last_error() -> Option<String> { | |
235 | unsafe { | |
236 | let cstr = LLVMRustGetLastError(); | |
237 | if cstr.is_null() { | |
238 | None | |
239 | } else { | |
240 | let err = CStr::from_ptr(cstr).to_bytes(); | |
241 | let err = String::from_utf8_lossy(err).to_string(); | |
242 | libc::free(cstr as *mut _); | |
243 | Some(err) | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | pub struct OperandBundleDef<'a> { | |
249 | pub raw: &'a mut ffi::OperandBundleDef<'a>, | |
250 | } | |
251 | ||
252 | impl OperandBundleDef<'a> { | |
253 | pub fn new(name: &str, vals: &[&'a Value]) -> Self { | |
254 | let name = SmallCStr::new(name); | |
255 | let def = unsafe { | |
256 | LLVMRustBuildOperandBundleDef(name.as_ptr(), vals.as_ptr(), vals.len() as c_uint) | |
257 | }; | |
258 | OperandBundleDef { raw: def } | |
259 | } | |
260 | } | |
261 | ||
262 | impl Drop for OperandBundleDef<'a> { | |
263 | fn drop(&mut self) { | |
264 | unsafe { | |
265 | LLVMRustFreeOperandBundleDef(&mut *(self.raw as *mut _)); | |
266 | } | |
267 | } | |
268 | } |