85 lines
2.4 KiB
Rust
85 lines
2.4 KiB
Rust
// NB: transitionary, de-mode-ing.
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#[forbid(deprecated_mode)];
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#[forbid(deprecated_pattern)];
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//! Runtime calls emitted by the compiler.
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use libc::c_char;
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use libc::c_void;
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use libc::size_t;
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use libc::uintptr_t;
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use gc::{cleanup_stack_for_failure, gc, Word};
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#[allow(non_camel_case_types)]
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pub type rust_task = c_void;
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extern mod rustrt {
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#[rust_stack]
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fn rust_upcall_fail(expr: *c_char, file: *c_char, line: size_t);
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#[rust_stack]
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fn rust_upcall_exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char;
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#[rust_stack]
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fn rust_upcall_exchange_free(ptr: *c_char);
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#[rust_stack]
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fn rust_upcall_malloc(td: *c_char, size: uintptr_t) -> *c_char;
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#[rust_stack]
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fn rust_upcall_free(ptr: *c_char);
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}
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// FIXME (#2861): This needs both the attribute, and the name prefixed with
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// 'rt_', otherwise the compiler won't find it. To fix this, see
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// gather_rust_rtcalls.
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#[rt(fail_)]
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pub fn rt_fail_(expr: *c_char, file: *c_char, line: size_t) {
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cleanup_stack_for_failure();
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rustrt::rust_upcall_fail(expr, file, line);
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}
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#[rt(fail_bounds_check)]
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pub fn rt_fail_bounds_check(file: *c_char, line: size_t,
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index: size_t, len: size_t) {
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let msg = fmt!("index out of bounds: the len is %d but the index is %d",
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len as int, index as int);
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do str::as_buf(msg) |p, _len| {
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rt_fail_(p as *c_char, file, line);
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}
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}
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#[rt(exchange_malloc)]
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pub fn rt_exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char {
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return rustrt::rust_upcall_exchange_malloc(td, size);
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}
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// NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
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// inside a landing pad may corrupt the state of the exception handler. If a
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// problem occurs, call exit instead.
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#[rt(exchange_free)]
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pub fn rt_exchange_free(ptr: *c_char) {
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rustrt::rust_upcall_exchange_free(ptr);
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}
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#[rt(malloc)]
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pub fn rt_malloc(td: *c_char, size: uintptr_t) -> *c_char {
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return rustrt::rust_upcall_malloc(td, size);
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}
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// NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
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// inside a landing pad may corrupt the state of the exception handler. If a
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// problem occurs, call exit instead.
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#[rt(free)]
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pub fn rt_free(ptr: *c_char) {
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rustrt::rust_upcall_free(ptr);
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}
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// Local Variables:
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// mode: rust;
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// End:
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