1 files changed, 93 insertions, 0 deletions
diff --git a/user/rust/0007-Fix-C-aggregate-passing-ABI-on-powerpc.patch b/user/rust/0007-Fix-C-aggregate-passing-ABI-on-powerpc.patch
new file mode 100644
index 000000000..05b91456f
--- /dev/null
+++ b/user/rust/0007-Fix-C-aggregate-passing-ABI-on-powerpc.patch
@@ -0,0 +1,93 @@
+From c9a914f48652de22832a40ef9639ff8d57c57f31 Mon Sep 17 00:00:00 2001
+From: Samuel Holland <samuel@sholland.org>
+Date: Wed, 4 Sep 2019 20:40:18 -0500
+Subject: [PATCH 07/16] Fix C aggregate-passing ABI on powerpc
+
+The existing code (which looks like it was copied from MIPS) passes
+aggregates by value in registers. This is wrong. According to the SVR4
+powerpc psABI, all aggregates are passed indirectly.
+---
+ src/librustc_target/abi/call/mod.rs     |  2 +-
+ src/librustc_target/abi/call/powerpc.rs | 41 ++++++-------------------
+ 2 files changed, 11 insertions(+), 32 deletions(-)
+
+diff --git a/src/librustc_target/abi/call/mod.rs b/src/librustc_target/abi/call/mod.rs
+index fbbd120f934..f4d98177072 100644
+--- a/src/librustc_target/abi/call/mod.rs
++++ b/src/librustc_target/abi/call/mod.rs
+@@ -562,7 +562,7 @@ impl<'a, Ty> FnType<'a, Ty> {
+             "arm" => arm::compute_abi_info(cx, self),
+             "mips" => mips::compute_abi_info(cx, self),
+             "mips64" => mips64::compute_abi_info(cx, self),
+-            "powerpc" => powerpc::compute_abi_info(cx, self),
++            "powerpc" => powerpc::compute_abi_info(self),
+             "powerpc64" => powerpc64::compute_abi_info(cx, self),
+             "s390x" => s390x::compute_abi_info(cx, self),
+             "asmjs" => asmjs::compute_abi_info(cx, self),
+diff --git a/src/librustc_target/abi/call/powerpc.rs b/src/librustc_target/abi/call/powerpc.rs
+index d496abf8e8b..f20defd6f5b 100644
+--- a/src/librustc_target/abi/call/powerpc.rs
++++ b/src/librustc_target/abi/call/powerpc.rs
+@@ -1,49 +1,28 @@
+-use crate::abi::call::{ArgType, FnType, Reg, Uniform};
+-use crate::abi::{HasDataLayout, LayoutOf, Size, TyLayoutMethods};
++use crate::abi::call::{ArgType, FnType};
+ 
+-fn classify_ret_ty<'a, Ty, C>(cx: &C, ret: &mut ArgType<'_, Ty>, offset: &mut Size)
+-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
+-{
+-    if !ret.layout.is_aggregate() {
+-        ret.extend_integer_width_to(32);
+-    } else {
++fn classify_ret_ty<Ty>(ret: &mut ArgType<'_, Ty>) {
++    if ret.layout.is_aggregate() {
+         ret.make_indirect();
+-        *offset += cx.data_layout().pointer_size;
++    } else {
++        ret.extend_integer_width_to(32);
+     }
+ }
+ 
+-fn classify_arg_ty<'a, Ty, C>(cx: &C, arg: &mut ArgType<'_, Ty>, offset: &mut Size)
+-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
+-{
+-    let dl = cx.data_layout();
+-    let size = arg.layout.size;
+-    let align = arg.layout.align.max(dl.i32_align).min(dl.i64_align).abi;
+-
++fn classify_arg_ty<Ty>(arg: &mut ArgType<'_, Ty>) {
+     if arg.layout.is_aggregate() {
+-        arg.cast_to(Uniform {
+-            unit: Reg::i32(),
+-            total: size
+-        });
+-        if !offset.is_aligned(align) {
+-            arg.pad_with(Reg::i32());
+-        }
++        arg.make_indirect();
+     } else {
+         arg.extend_integer_width_to(32);
+     }
+-
+-    *offset = offset.align_to(align) + size.align_to(align);
+ }
+ 
+-pub fn compute_abi_info<'a, Ty, C>(cx: &C, fty: &mut FnType<'_, Ty>)
+-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
+-{
+-    let mut offset = Size::ZERO;
++pub fn compute_abi_info<Ty>(fty: &mut FnType<'_, Ty>) {
+     if !fty.ret.is_ignore() {
+-        classify_ret_ty(cx, &mut fty.ret, &mut offset);
++        classify_ret_ty(&mut fty.ret);
+     }
+ 
+     for arg in &mut fty.args {
+         if arg.is_ignore() { continue; }
+-        classify_arg_ty(cx, arg, &mut offset);
++        classify_arg_ty(arg);
+     }
+ }
+-- 
+2.21.0
+