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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
commit | 17d40c6057c88f4c432b0d7bac88e1b84cb7e67f (patch) | |
tree | 3f66c4a5918660bb8a758ab6cda5ff8ee4f6cdcd /compiler/rustc_target/src/abi/mod.rs | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-f7f0cc2a5d72e2c61c1f6900e70eec992bea4273.tar.xz rustc-f7f0cc2a5d72e2c61c1f6900e70eec992bea4273.zip |
Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | compiler/rustc_target/src/abi/mod.rs | 67 |
1 files changed, 39 insertions, 28 deletions
diff --git a/compiler/rustc_target/src/abi/mod.rs b/compiler/rustc_target/src/abi/mod.rs index 92ce4d91d..ec334e588 100644 --- a/compiler/rustc_target/src/abi/mod.rs +++ b/compiler/rustc_target/src/abi/mod.rs @@ -7,7 +7,7 @@ use crate::spec::Target; use std::convert::{TryFrom, TryInto}; use std::fmt; use std::iter::Step; -use std::num::NonZeroUsize; +use std::num::{NonZeroUsize, ParseIntError}; use std::ops::{Add, AddAssign, Deref, Mul, RangeInclusive, Sub}; use std::str::FromStr; @@ -69,34 +69,46 @@ impl Default for TargetDataLayout { } } +pub enum TargetDataLayoutErrors<'a> { + InvalidAddressSpace { addr_space: &'a str, cause: &'a str, err: ParseIntError }, + InvalidBits { kind: &'a str, bit: &'a str, cause: &'a str, err: ParseIntError }, + MissingAlignment { cause: &'a str }, + InvalidAlignment { cause: &'a str, err: String }, + InconsistentTargetArchitecture { dl: &'a str, target: &'a str }, + InconsistentTargetPointerWidth { pointer_size: u64, target: u32 }, + InvalidBitsSize { err: String }, +} + impl TargetDataLayout { - pub fn parse(target: &Target) -> Result<TargetDataLayout, String> { + pub fn parse<'a>(target: &'a Target) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>> { // Parse an address space index from a string. - let parse_address_space = |s: &str, cause: &str| { + let parse_address_space = |s: &'a str, cause: &'a str| { s.parse::<u32>().map(AddressSpace).map_err(|err| { - format!("invalid address space `{}` for `{}` in \"data-layout\": {}", s, cause, err) + TargetDataLayoutErrors::InvalidAddressSpace { addr_space: s, cause, err } }) }; // Parse a bit count from a string. - let parse_bits = |s: &str, kind: &str, cause: &str| { - s.parse::<u64>().map_err(|err| { - format!("invalid {} `{}` for `{}` in \"data-layout\": {}", kind, s, cause, err) + let parse_bits = |s: &'a str, kind: &'a str, cause: &'a str| { + s.parse::<u64>().map_err(|err| TargetDataLayoutErrors::InvalidBits { + kind, + bit: s, + cause, + err, }) }; // Parse a size string. - let size = |s: &str, cause: &str| parse_bits(s, "size", cause).map(Size::from_bits); + let size = |s: &'a str, cause: &'a str| parse_bits(s, "size", cause).map(Size::from_bits); // Parse an alignment string. - let align = |s: &[&str], cause: &str| { + let align = |s: &[&'a str], cause: &'a str| { if s.is_empty() { - return Err(format!("missing alignment for `{}` in \"data-layout\"", cause)); + return Err(TargetDataLayoutErrors::MissingAlignment { cause }); } let align_from_bits = |bits| { - Align::from_bits(bits).map_err(|err| { - format!("invalid alignment for `{}` in \"data-layout\": {}", cause, err) - }) + Align::from_bits(bits) + .map_err(|err| TargetDataLayoutErrors::InvalidAlignment { cause, err }) }; let abi = parse_bits(s[0], "alignment", cause)?; let pref = s.get(1).map_or(Ok(abi), |pref| parse_bits(pref, "alignment", cause))?; @@ -158,25 +170,24 @@ impl TargetDataLayout { // Perform consistency checks against the Target information. if dl.endian != target.endian { - return Err(format!( - "inconsistent target specification: \"data-layout\" claims \ - architecture is {}-endian, while \"target-endian\" is `{}`", - dl.endian.as_str(), - target.endian.as_str(), - )); + return Err(TargetDataLayoutErrors::InconsistentTargetArchitecture { + dl: dl.endian.as_str(), + target: target.endian.as_str(), + }); } let target_pointer_width: u64 = target.pointer_width.into(); if dl.pointer_size.bits() != target_pointer_width { - return Err(format!( - "inconsistent target specification: \"data-layout\" claims \ - pointers are {}-bit, while \"target-pointer-width\" is `{}`", - dl.pointer_size.bits(), - target.pointer_width - )); + return Err(TargetDataLayoutErrors::InconsistentTargetPointerWidth { + pointer_size: dl.pointer_size.bits(), + target: target.pointer_width, + }); } - dl.c_enum_min_size = Integer::from_size(Size::from_bits(target.c_enum_min_bits))?; + dl.c_enum_min_size = match Integer::from_size(Size::from_bits(target.c_enum_min_bits)) { + Ok(bits) => bits, + Err(err) => return Err(TargetDataLayoutErrors::InvalidBitsSize { err }), + }; Ok(dl) } @@ -1130,7 +1141,7 @@ pub enum TagEncoding { /// Niche (values invalid for a type) encoding the discriminant: /// Discriminant and variant index coincide. - /// The variant `dataful_variant` contains a niche at an arbitrary + /// The variant `untagged_variant` contains a niche at an arbitrary /// offset (field `tag_field` of the enum), which for a variant with /// discriminant `d` is set to /// `(d - niche_variants.start).wrapping_add(niche_start)`. @@ -1139,7 +1150,7 @@ pub enum TagEncoding { /// `None` has a null pointer for the second tuple field, and /// `Some` is the identity function (with a non-null reference). Niche { - dataful_variant: VariantIdx, + untagged_variant: VariantIdx, niche_variants: RangeInclusive<VariantIdx>, niche_start: u128, }, |