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unwind: Apply unsafe_op_in_unsafe_fn

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This commit is contained in:
Eric Huss 2025-02-13 12:45:31 -08:00
parent 331911e699
commit 0484d23465
2 changed files with 12 additions and 9 deletions
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1
library/unwind/src/lib.rs
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@ -9,6 +9,7 @@
)]
#![allow(internal_features)]
#![cfg_attr(not(bootstrap), feature(cfg_emscripten_wasm_eh))]
#![deny(unsafe_op_in_unsafe_fn)]
// Force libc to be included even if unused. This is required by many platforms.
#[cfg(not(all(windows, target_env = "msvc")))]

20
library/unwind/src/libunwind.rs
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@ -218,36 +218,38 @@ if #[cfg(any(target_vendor = "apple", target_os = "netbsd", not(target_arch = "a
pub unsafe fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word {
let mut val: _Unwind_Word = core::ptr::null();
_Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
(&raw mut val) as *mut c_void);
unsafe { _Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
(&raw mut val) as *mut c_void); }
val
}
pub unsafe fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word) {
let mut value = value;
_Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
(&raw mut value) as *mut c_void);
unsafe { _Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
(&raw mut value) as *mut c_void); }
}
pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context)
-> _Unwind_Word {
let val = _Unwind_GetGR(ctx, UNWIND_IP_REG);
let val = unsafe { _Unwind_GetGR(ctx, UNWIND_IP_REG) };
val.map_addr(|v| v & !1)
}
pub unsafe fn _Unwind_SetIP(ctx: *mut _Unwind_Context,
value: _Unwind_Word) {
// Propagate thumb bit to instruction pointer
let thumb_state = _Unwind_GetGR(ctx, UNWIND_IP_REG).addr() & 1;
let thumb_state = unsafe { _Unwind_GetGR(ctx, UNWIND_IP_REG).addr() & 1 };
let value = value.map_addr(|v| v | thumb_state);
_Unwind_SetGR(ctx, UNWIND_IP_REG, value);
unsafe { _Unwind_SetGR(ctx, UNWIND_IP_REG, value); }
}
pub unsafe fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context,
ip_before_insn: *mut c_int)
-> _Unwind_Word {
*ip_before_insn = 0;
_Unwind_GetIP(ctx)
unsafe {
*ip_before_insn = 0;
_Unwind_GetIP(ctx)
}
}
// This function also doesn't exist on Android or ARM/Linux, so make it a no-op