Merging upstream version 1.67.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 152 insertions, 25 deletions

diff --git a/vendor/compiler_builtins/.cargo-checksum.json b/vendor/compiler_builtins/.cargo-checksum.json
index 90052bb9e..b8a09aaf4 100644
--- a/vendor/compiler_builtins/.cargo-checksum.json
+++ b/vendor/compiler_builtins/.cargo-checksum.json
@@ -1 +1 @@
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2","libm/src/math/scalbnf.rs":"4f198d06db1896386256fb9a5ac5b805b16b836226c18780a475cf18d7c1449c","libm/src/math/sin.rs":"bb483a2138ca779e03a191222636f0c60fd75a77a2a12f263bda4b6aa9136317","libm/src/math/sincos.rs":"1cf62a16c215e367f51078a3ba23a3f257682032a8f3c657293029a886b18d82","libm/src/math/sincosf.rs":"b0f589e6ada8215944d7784f420c6721c90387d799e349ce7676674f3c475e75","libm/src/math/sinf.rs":"dcddac1d56b084cbb8d0e019433c9c5fe2201d9b257a7dcf2f85c9a8f14b79cf","libm/src/math/sinh.rs":"d8ee4c7af883a526f36c1a6da13bb81fba9181b477e2f2538161a2bee97edc35","libm/src/math/sinhf.rs":"d06eb030ba9dbf7094df127262bfe99f149b4db49fa8ab8c15499660f1e46b26","libm/src/math/sqrt.rs":"824570a631c2542ccee68b65e3eb08fe79c037a29bbaaf54da5367e7b236124a","libm/src/math/sqrtf.rs":"4cf418d74f7751d522a642a9a8d6b86ee3472c6aaef44f0eb1bc26f4d8a90985","libm/src/math/tan.rs":"930ecedaadc60f704c2dfa4e15186f59713c1ba7d948529d215223b424827db5","libm/src/math/tanf.rs":"894156a3b107aee08461eb4e7e412fc049aa237d176ae705c6e3e2d7060d94e3","libm/src/math/tanh.rs":"f1f08eb98ed959a17370a7aaf0177be36e3764543424e78feb033ed3f5e8ec98","libm/src/math/tanhf.rs":"74027b0c672a4e64bdef6d7a3069b90caec50e1e7dbb2c12d2828f310502f41e","libm/src/math/tgamma.rs":"c889cfa49bbeb4dbb0941fe9fac3b4da7d5879dcf04a3b9bb6e56de529baf374","libm/src/math/tgammaf.rs":"0737b34777095d0e4d07fe533e8f105082dd4e8ece411bba6ae5993b45b9388c","libm/src/math/trunc.rs":"642264897cc1505e720c8cf313be81aa9fd53aae866644a2e988d01dbc77fd8a","libm/src/math/truncf.rs":"dee3607baf1af0f01deae46e429e097234c50b268eaefebbe716f19f38597900","src/arm.rs":"acf149932aa46a2755cf8cd2eb7d6ae249e46b1e10ad45ce5f924561945d1273","src/arm_linux.rs":"35a4cb7b75015543feb15b0c692da0faf0e6037d3b97a4a18067ba416eae1a70","src/float/add.rs":"3ec32ceaf470a89777b54f9cde61832fdadeade0f4894f268a949e968520bc57","src/float/cmp.rs":"79b1fdc8d5f943c4ad5ea4ad32623b18f63e17ac3852fbc64a4942228007e1fc","src/float/conv.rs":"e2b5e6fe398f35c7db4af62ba1fd79b39591fe1bfaf304ae825ed3c8cf902d9c","src/float/div.rs":"fe21115ecb1b3330569fd85cb51c650bf80683f152333db988d8e0d564a9ae11","src/float/extend.rs":"180b2e791c58e0526de0a798845c580ce3222c8a15c8665e6e6a4bf5cf1a34aa","src/float/mod.rs":"48d76632575789a6ecf99213b1ed38c21c86ad5a5c3fa33ccb31f77829271b79","src/float/mul.rs":"0d0c1f0c28c149ecadeafd459d3c4c9327e4cfcae2cba479957bb8010ef51a01","src/float/pow.rs":"2ada190738731eb6f24104f8fb8c4d6f03cfb16451536dbee32f2b33db0c4b19","src/float/sub.rs":"c2a87f4628f51d5d908d0f25b5d51ce0599dc559d5a72b20e131261f484d5848","src/float/trunc.rs":"d21d2a2f9a1918b4bbb594691e397972a7c04b74b2acf04016c55693abf6d24b","src/int/addsub.rs":"7ec45ce1ba15b56a5b7129d3e5722c4db764c6545306d3fa9090983bcabd6f17","src/int/leading_zeros.rs":"ccf5e9d098c80034dcf6e38437c9a2eb670fa8043558bbfb574f2293164729a6","src/int/mod.rs":"bab1b77535ceebdebb89fd4e59e7105f8c45347bb638351a626615b24544a0b1","src/int/mul.rs":"bb48d8fd42d8f9f5fe9271d8d0f7a92dbae320bf4346e19d1071eb2093cb8ed9","src/int/sdiv.rs":"ace4cb0ec388a38834e01cab2c5bc87182d31588dfc0b1ae117c11ed0c4781cf","src/int/shift.rs":"3967c28a8d61279546e91958d64745fec63f15aee9175eb0602cc6353830da6c","src/int/specialized_div_rem/asymmetric.rs":"27f5bf70a35109f9d4e4e1ad1e8003aa17da5a1e436bf3e63a493d7528a3a566","src/int/specialized_div_rem/binary_long.rs":"9f1ced81a394f000a21a329683144d68ee431a954136a3634eb55b1ee2cf6d51","src/int/specialized_div_rem/delegate.rs":"9df141af98e391361e25d71ae38d5e845a91d896edd2c041132fd46af8268e85","src/int/specialized_div_rem/mod.rs":"73c98b9f69cc9b101ae4c9081e82d66af1df4a58cf0c9bb2a8c8659265687f12","src/int/specialized_div_rem/norm_shift.rs":"3be7ee0dea545c1f702d9daf67dad2b624bf7b17b075c8b90d3d3f7b53df4c21","src/int/specialized_div_rem/trifecta.rs":"87eef69da255b809fd710b14f2eb3f9f59e3dac625f8564ebc8ba78f9763523b","src/int/udiv.rs":"3732b490a472505411577f008b92f489287745968ce6791665201201377d3475","src/lib.rs":"d0e85291d12a57c61791257e3adefb8f2222e1ba6f9e5cd4cf7fba59d26477f4","src/macros.rs":"de690dffc59a5884ed06c67d38f06c41ed02fcd6318189397a0d4aafbd375ad8","src/math.rs":"d85fc84c46427604e13e1cfd41592770c951b3d906ff50954b5f7dbece5ce397","src/mem/impls.rs":"a8d1c28a77d9b334872abbebfcba3fd1802175bef53c0b545e85242860698780","src/mem/mod.rs":"5034543d963149c14a6823bee32a1fb9dfd950c32153d37f97e9df1dc6c23129","src/mem/x86_64.rs":"9f740891f666acf384159128eef233d9e15c6120da8016370c6f9f05cc29d653","src/probestack.rs":"ef5c07e9b95de7b2b77a937789fcfefd9846274317489ad6d623e377c9888601","src/riscv.rs":"b43ede1713454c3e50b5a011964d336146155026cac6119767c96b70a165f10f","src/x86.rs":"117b50d6725ee0af0a7b3d197ea580655561f66a870ebc450d96af22bf7f39f6","src/x86_64.rs":"4f16bc9fad7757d48a6da3a078c715dd3a22154aadb4f1998d4c1b5d91396f9e"},"package":"989b2c1ca6e90ad06fdc69d1d1862fa28d27a977be6d92ae2fa762cf61fe0b10"}
\ No newline at end of file
diff --git a/vendor/compiler_builtins/Cargo.lock b/vendor/compiler_builtins/Cargo.lock
index a498ea0ea..367de55ae 100644
--- a/vendor/compiler_builtins/Cargo.lock
+++ b/vendor/compiler_builtins/Cargo.lock
@@ -4,13 +4,13 @@ version = 3
 
 [[package]]
 name = "cc"
-version = "1.0.73"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+checksum = "7db2f146208d7e0fbee761b09cd65a7f51ccc38705d4e7262dad4d73b12a76b1"
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.82"
+version = "0.1.84"
 dependencies = [
  "cc",
  "rustc-std-workspace-core",
diff --git a/vendor/compiler_builtins/Cargo.toml b/vendor/compiler_builtins/Cargo.toml
index 13ec182df..980d59038 100644
--- a/vendor/compiler_builtins/Cargo.toml
+++ b/vendor/compiler_builtins/Cargo.toml
@@ -11,7 +11,7 @@
 
 [package]
 name = "compiler_builtins"
-version = "0.1.82"
+version = "0.1.84"
 authors = ["Jorge Aparicio <japaricious@gmail.com>"]
 links = "compiler-rt"
 include = [
@@ -65,7 +65,6 @@ default = ["compiler-builtins"]
 mangled-names = []
 mem = []
 no-asm = []
-no-lang-items = []
 public-test-deps = []
 rustc-dep-of-std = [
     "compiler-builtins",
diff --git a/vendor/compiler_builtins/build.rs b/vendor/compiler_builtins/build.rs
index 73952bb9f..3f5dbd3ab 100644
--- a/vendor/compiler_builtins/build.rs
+++ b/vendor/compiler_builtins/build.rs
@@ -98,7 +98,7 @@ mod c {
 
     use std::collections::{BTreeMap, HashSet};
     use std::env;
-    use std::fs::File;
+    use std::fs::{self, File};
     use std::io::Write;
     use std::path::{Path, PathBuf};
 
@@ -190,6 +190,21 @@ mod c {
             cfg.define("VISIBILITY_HIDDEN", None);
         }
 
+        // int_util.c tries to include stdlib.h if `_WIN32` is defined,
+        // which it is when compiling UEFI targets with clang. This is
+        // at odds with compiling with `-ffreestanding`, as the header
+        // may be incompatible or not present. Create a minimal stub
+        // header to use instead.
+        if target_os == "uefi" {
+            let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+            let include_dir = out_dir.join("include");
+            if !include_dir.exists() {
+                fs::create_dir(&include_dir).unwrap();
+            }
+            fs::write(include_dir.join("stdlib.h"), "#include <stddef.h>").unwrap();
+            cfg.flag(&format!("-I{}", include_dir.to_str().unwrap()));
+        }
+
         let mut sources = Sources::new();
         sources.extend(&[
             ("__absvdi2", "absvdi2.c"),
@@ -465,7 +480,8 @@ mod c {
         }
 
         // Remove the assembly implementations that won't compile for the target
-        if llvm_target[0] == "thumbv6m" || llvm_target[0] == "thumbv8m.base" {
+        if llvm_target[0] == "thumbv6m" || llvm_target[0] == "thumbv8m.base" || target_os == "uefi"
+        {
             let mut to_remove = Vec::new();
             for (k, v) in sources.map.iter() {
                 if v.ends_with(".S") {
diff --git a/vendor/compiler_builtins/libm/src/math/fma.rs b/vendor/compiler_builtins/libm/src/math/fma.rs
index 516f9ad3a..f9a86dc60 100644
--- a/vendor/compiler_builtins/libm/src/math/fma.rs
+++ b/vendor/compiler_builtins/libm/src/math/fma.rs
@@ -126,8 +126,8 @@ pub fn fma(x: f64, y: f64, z: f64) -> f64 {
         rlo = res;
         rhi = rhi.wrapping_sub(zhi.wrapping_add(borrow as u64));
         if (rhi >> 63) != 0 {
-            rlo = (-(rlo as i64)) as u64;
-            rhi = (-(rhi as i64)) as u64 - (rlo != 0) as u64;
+            rlo = (rlo as i64).wrapping_neg() as u64;
+            rhi = (rhi as i64).wrapping_neg() as u64 - (rlo != 0) as u64;
             sign = (sign == 0) as i32;
         }
         nonzero = (rhi != 0) as i32;
@@ -232,4 +232,12 @@ mod tests {
             -3991680619069439e277
         );
     }
+
+    #[test]
+    fn fma_underflow() {
+        assert_eq!(
+            fma(1.1102230246251565e-16, -9.812526705433188e-305, 1.0894e-320),
+            0.0,
+        );
+    }
 }
diff --git a/vendor/compiler_builtins/libm/src/math/mod.rs b/vendor/compiler_builtins/libm/src/math/mod.rs
index 81bfc53ed..05ebb708c 100644
--- a/vendor/compiler_builtins/libm/src/math/mod.rs
+++ b/vendor/compiler_builtins/libm/src/math/mod.rs
@@ -170,6 +170,8 @@ mod remainder;
 mod remainderf;
 mod remquo;
 mod remquof;
+mod rint;
+mod rintf;
 mod round;
 mod roundf;
 mod scalbn;
@@ -284,6 +286,8 @@ pub use self::remainder::remainder;
 pub use self::remainderf::remainderf;
 pub use self::remquo::remquo;
 pub use self::remquof::remquof;
+pub use self::rint::rint;
+pub use self::rintf::rintf;
 pub use self::round::round;
 pub use self::roundf::roundf;
 pub use self::scalbn::scalbn;
diff --git a/vendor/compiler_builtins/libm/src/math/rint.rs b/vendor/compiler_builtins/libm/src/math/rint.rs
new file mode 100644
index 000000000..0c6025c1f
--- /dev/null
+++ b/vendor/compiler_builtins/libm/src/math/rint.rs
@@ -0,0 +1,48 @@
+#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
+pub fn rint(x: f64) -> f64 {
+    let one_over_e = 1.0 / f64::EPSILON;
+    let as_u64: u64 = x.to_bits();
+    let exponent: u64 = as_u64 >> 52 & 0x7ff;
+    let is_positive = (as_u64 >> 63) == 0;
+    if exponent >= 0x3ff + 52 {
+        x
+    } else {
+        let ans = if is_positive {
+            x + one_over_e - one_over_e
+        } else {
+            x - one_over_e + one_over_e
+        };
+
+        if ans == 0.0 {
+            if is_positive {
+                0.0
+            } else {
+                -0.0
+            }
+        } else {
+            ans
+        }
+    }
+}
+
+// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+#[cfg(not(target_arch = "powerpc64"))]
+#[cfg(test)]
+mod tests {
+    use super::rint;
+
+    #[test]
+    fn negative_zero() {
+        assert_eq!(rint(-0.0_f64).to_bits(), (-0.0_f64).to_bits());
+    }
+
+    #[test]
+    fn sanity_check() {
+        assert_eq!(rint(-1.0), -1.0);
+        assert_eq!(rint(2.8), 3.0);
+        assert_eq!(rint(-0.5), -0.0);
+        assert_eq!(rint(0.5), 0.0);
+        assert_eq!(rint(-1.5), -2.0);
+        assert_eq!(rint(1.5), 2.0);
+    }
+}
diff --git a/vendor/compiler_builtins/libm/src/math/rintf.rs b/vendor/compiler_builtins/libm/src/math/rintf.rs
new file mode 100644
index 000000000..d427793f7
--- /dev/null
+++ b/vendor/compiler_builtins/libm/src/math/rintf.rs
@@ -0,0 +1,48 @@
+#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
+pub fn rintf(x: f32) -> f32 {
+    let one_over_e = 1.0 / f32::EPSILON;
+    let as_u32: u32 = x.to_bits();
+    let exponent: u32 = as_u32 >> 23 & 0xff;
+    let is_positive = (as_u32 >> 31) == 0;
+    if exponent >= 0x7f + 23 {
+        x
+    } else {
+        let ans = if is_positive {
+            x + one_over_e - one_over_e
+        } else {
+            x - one_over_e + one_over_e
+        };
+
+        if ans == 0.0 {
+            if is_positive {
+                0.0
+            } else {
+                -0.0
+            }
+        } else {
+            ans
+        }
+    }
+}
+
+// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+#[cfg(not(target_arch = "powerpc64"))]
+#[cfg(test)]
+mod tests {
+    use super::rintf;
+
+    #[test]
+    fn negative_zero() {
+        assert_eq!(rintf(-0.0_f32).to_bits(), (-0.0_f32).to_bits());
+    }
+
+    #[test]
+    fn sanity_check() {
+        assert_eq!(rintf(-1.0), -1.0);
+        assert_eq!(rintf(2.8), 3.0);
+        assert_eq!(rintf(-0.5), -0.0);
+        assert_eq!(rintf(0.5), 0.0);
+        assert_eq!(rintf(-1.5), -2.0);
+        assert_eq!(rintf(1.5), 2.0);
+    }
+}
diff --git a/vendor/compiler_builtins/src/math.rs b/vendor/compiler_builtins/src/math.rs
index 3fc33b127..4ae174891 100644
--- a/vendor/compiler_builtins/src/math.rs
+++ b/vendor/compiler_builtins/src/math.rs
@@ -46,6 +46,8 @@ no_mangle! {
     fn fmaxf(x: f32, y: f32) -> f32;
     fn round(x: f64) -> f64;
     fn roundf(x: f32) -> f32;
+    fn rint(x: f64) -> f64;
+    fn rintf(x: f32) -> f32;
     fn sin(x: f64) -> f64;
     fn pow(x: f64, y: f64) -> f64;
     fn powf(x: f32, y: f32) -> f32;
@@ -65,20 +67,6 @@ no_mangle! {
     fn ldexpf(f: f32, n: i32) -> f32;
     fn tgamma(x: f64) -> f64;
     fn tgammaf(x: f32) -> f32;
-}
-
-#[cfg(any(
-    all(
-        target_family = "wasm",
-        target_os = "unknown",
-        not(target_env = "wasi")
-    ),
-    target_os = "xous",
-    all(target_arch = "x86_64", target_os = "uefi"),
-    all(target_arch = "xtensa", target_os = "none"),
-    all(target_vendor = "fortanix", target_env = "sgx")
-))]
-no_mangle! {
     fn atan(x: f64) -> f64;
     fn atan2(x: f64, y: f64) -> f64;
     fn cosh(x: f64) -> f64;
diff --git a/vendor/compiler_builtins/src/riscv.rs b/vendor/compiler_builtins/src/riscv.rs
index ee78b9dba..ae361b33a 100644
--- a/vendor/compiler_builtins/src/riscv.rs
+++ b/vendor/compiler_builtins/src/riscv.rs
@@ -1,6 +1,22 @@
 intrinsics! {
-    // Implementation from gcc
+    // Ancient Egyptian/Ethiopian/Russian multiplication method
+    // see https://en.wikipedia.org/wiki/Ancient_Egyptian_multiplication
+    //
+    // This is a long-available stock algorithm; e.g. it is documented in
+    // Knuth's "The Art of Computer Programming" volume 2 (under the section
+    // "Evaluation of Powers") since at least the 2nd edition (1981).
+    //
+    // The main attraction of this method is that it implements (software)
+    // multiplication atop four simple operations: doubling, halving, checking
+    // if a value is even/odd, and addition. This is *not* considered to be the
+    // fastest multiplication method, but it may be amongst the simplest (and
+    // smallest with respect to code size).
+    //
+    // for reference, see also implementation from gcc
     // https://raw.githubusercontent.com/gcc-mirror/gcc/master/libgcc/config/epiphany/mulsi3.c
+    //
+    // and from LLVM (in relatively readable RISC-V assembly):
+    // https://github.com/llvm/llvm-project/blob/main/compiler-rt/lib/builtins/riscv/int_mul_impl.inc
     pub extern "C" fn __mulsi3(a: u32, b: u32) -> u32 {
         let (mut a, mut b) = (a, b);
         let mut r = 0;