From fd693f49d8c13ec2530d2da62743b8136944e7c0 Mon Sep 17 00:00:00 2001
From: Philip Craig <philipjcraig@gmail.com>
Date: Wed, 26 Jun 2024 12:23:57 +1000
Subject: [PATCH] Add Architecture::Sparc (#699)

---
 src/common.rs           | 2 ++
 src/read/elf/file.rs    | 1 +
 src/write/elf/object.rs | 9 +++++++++
 tests/round_trip/mod.rs | 1 +
 4 files changed, 13 insertions(+)

diff --git a/src/common.rs b/src/common.rs
index 4327edb0..41f7191b 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -27,6 +27,7 @@ pub enum Architecture {
     S390x,
     Sbf,
     Sharc,
+    Sparc,
     Sparc64,
     Wasm32,
     Wasm64,
@@ -70,6 +71,7 @@ impl Architecture {
             Architecture::S390x => Some(AddressSize::U64),
             Architecture::Sbf => Some(AddressSize::U64),
             Architecture::Sharc => Some(AddressSize::U32),
+            Architecture::Sparc => Some(AddressSize::U32),
             Architecture::Sparc64 => Some(AddressSize::U64),
             Architecture::Wasm32 => Some(AddressSize::U32),
             Architecture::Wasm64 => Some(AddressSize::U64),
diff --git a/src/read/elf/file.rs b/src/read/elf/file.rs
index 01615e15..107a5219 100644
--- a/src/read/elf/file.rs
+++ b/src/read/elf/file.rs
@@ -226,6 +226,7 @@ where
             (elf::EM_S390, true) => Architecture::S390x,
             (elf::EM_SBF, _) => Architecture::Sbf,
             (elf::EM_SHARC, false) => Architecture::Sharc,
+            (elf::EM_SPARC, false) => Architecture::Sparc,
             (elf::EM_SPARCV9, true) => Architecture::Sparc64,
             (elf::EM_XTENSA, false) => Architecture::Xtensa,
             _ => Architecture::Unknown,
diff --git a/src/write/elf/object.rs b/src/write/elf/object.rs
index 2785c51c..ef97f4fd 100644
--- a/src/write/elf/object.rs
+++ b/src/write/elf/object.rs
@@ -141,6 +141,7 @@ impl<'a> Object<'a> {
             Architecture::S390x => true,
             Architecture::Sbf => false,
             Architecture::Sharc => true,
+            Architecture::Sparc => true,
             Architecture::Sparc64 => true,
             Architecture::Xtensa => true,
             _ => {
@@ -411,6 +412,13 @@ impl<'a> Object<'a> {
                     return Err(Error(format!("unimplemented relocation {:?}", reloc)));
                 }
             },
+            Architecture::Sparc => match (kind, encoding, size) {
+                // TODO: use R_SPARC_32 if aligned.
+                (RelocationKind::Absolute, _, 32) => elf::R_SPARC_UA32,
+                _ => {
+                    return Err(Error(format!("unimplemented relocation {:?}", reloc)));
+                }
+            },
             Architecture::Sparc64 => match (kind, encoding, size) {
                 // TODO: use R_SPARC_32/R_SPARC_64 if aligned.
                 (RelocationKind::Absolute, _, 32) => elf::R_SPARC_UA32,
@@ -631,6 +639,7 @@ impl<'a> Object<'a> {
             (Architecture::S390x, None) => elf::EM_S390,
             (Architecture::Sbf, None) => elf::EM_SBF,
             (Architecture::Sharc, None) => elf::EM_SHARC,
+            (Architecture::Sparc, None) => elf::EM_SPARC,
             (Architecture::Sparc64, None) => elf::EM_SPARCV9,
             (Architecture::Xtensa, None) => elf::EM_XTENSA,
             _ => {
diff --git a/tests/round_trip/mod.rs b/tests/round_trip/mod.rs
index 30a5bb2e..11eb7576 100644
--- a/tests/round_trip/mod.rs
+++ b/tests/round_trip/mod.rs
@@ -279,6 +279,7 @@ fn elf_any() {
         (Architecture::Riscv64, Endianness::Little),
         (Architecture::S390x, Endianness::Big),
         (Architecture::Sbf, Endianness::Little),
+        (Architecture::Sparc, Endianness::Big),
         (Architecture::Sparc64, Endianness::Big),
         (Architecture::Xtensa, Endianness::Little),
     ]