From 5289cbf5331dfd0d0c2242a7e7c8030aa4032c7e Mon Sep 17 00:00:00 2001 From: johannst Date: Sat, 7 Dec 2024 01:01:45 +0000 Subject: deploy: 9c3c3fd923d894d2351eb22129ea693eb98fa8ff --- src/juicebox_asm/lib.rs.html | 119 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 116 insertions(+), 3 deletions(-) (limited to 'src/juicebox_asm/lib.rs.html') diff --git a/src/juicebox_asm/lib.rs.html b/src/juicebox_asm/lib.rs.html index d7d33f1..2b9ed8a 100644 --- a/src/juicebox_asm/lib.rs.html +++ b/src/juicebox_asm/lib.rs.html @@ -1,5 +1,5 @@ -lib.rs - source
- 
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+lib.rs - source
juicebox_asm/
lib.rs
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-
//! A simple `x64` jit assembler with a minimal runtime to execute emitted code for fun.
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//! A simple `x64` jit assembler with a minimal runtime to execute emitted code for fun.
 //!
 //! The following is an fibonacci example implementation.
 //! ```rust
@@ -196,12 +252,16 @@
 pub use rt::Runtime;
 
 /// Type representing a memory operand.
+#[derive(Clone, Copy)]
 pub enum MemOp {
     /// An indirect memory operand, eg `mov [rax], rcx`.
     Indirect(Reg64),
 
     /// An indirect memory operand with additional displacement, eg `mov [rax + 0x10], rcx`.
     IndirectDisp(Reg64, i32),
+
+    /// An indirect memory operand in the form base + index, eg `mov [rax + rcx], rdx`.
+    IndirectBaseIndex(Reg64, Reg64),
 }
 
 impl MemOp {
@@ -210,7 +270,60 @@
         match self {
             MemOp::Indirect(base) => *base,
             MemOp::IndirectDisp(base, ..) => *base,
+            MemOp::IndirectBaseIndex(base, ..) => *base,
+        }
+    }
+
+    /// Get the index register of the memory operand.
+    fn index(&self) -> Reg64 {
+        // Return zero index register for memory operands w/o index register.
+        let zero_index = Reg64::rax;
+        use reg::Reg;
+        assert_eq!(zero_index.idx(), 0);
+
+        match self {
+            MemOp::Indirect(..) => zero_index,
+            MemOp::IndirectDisp(..) => zero_index,
+            MemOp::IndirectBaseIndex(.., index) => *index,
         }
     }
 }
+
+/// Trait to give size hints for memory operands.
+trait MemOpSized {
+    fn mem_op(&self) -> MemOp;
+}
+
+macro_rules! impl_memop_sized {
+    ($(#[$doc:meta] $name:ident)+) => {
+        $(
+        #[$doc]
+        pub struct $name(MemOp);
+
+        impl $name {
+            /// Create a memory with size hint from a raw memory operand.
+            pub fn from(op: MemOp) -> Self {
+                Self(op)
+            }
+        }
+
+        impl MemOpSized for $name {
+            fn mem_op(&self) -> MemOp {
+                self.0
+            }
+        }
+        )+
+    };
+}
+
+impl_memop_sized!(
+    /// A memory operand with a word (8 bit) size hint.
+    MemOp8
+    /// A memory operand with a word (16 bit) size hint.
+    MemOp16
+    /// A memory operand with a dword (32 bit) size hint.
+    MemOp32
+    /// A memory operand with a qword (64 bit) size hint.
+    MemOp64
+);
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