From 5b787bbffc7d4522822b85dfa215c6ff0e8f791f Mon Sep 17 00:00:00 2001
From: Robin Randhawa <robin.randhawa@gmail.com>
Date: Thu, 22 Feb 2024 15:09:16 +0000
Subject: [PATCH] v: parser: rv64: asm: Support for base+displacement
 addressing

---
 vlib/v/parser/parser.v | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/vlib/v/parser/parser.v b/vlib/v/parser/parser.v
index 4a0ee6a29ee751..9676df3df52daa 100644
--- a/vlib/v/parser/parser.v
+++ b/vlib/v/parser/parser.v
@@ -1313,8 +1313,15 @@ fn (mut p Parser) asm_stmt(is_top_level bool) ast.AsmStmt {
 										pos: number_lit.pos
 									}
 								} else {
-									args << ast.IntegerLiteral{
-										...number_lit
+									if arch == .rv64 {
+										if (p.tok.kind == .lpar) && (p.peek_token(2).kind == .rpar) {
+											mut addressing := p.asm_addressing_rv64()
+											args << addressing
+										}
+									} else {
+										args << ast.IntegerLiteral{
+											...number_lit
+										}
 									}
 								}
 							}
@@ -1567,6 +1574,23 @@ fn (mut p Parser) reg_or_alias() ast.AsmArg {
 // 	}
 // }
 
+fn (mut p Parser) asm_addressing_rv64() ast.AsmAddressing {
+	pos := p.tok.pos()
+	p.check(.lpar)
+	displacement := ast.AsmArg(ast.AsmDisp{
+		val: p.peek_token(-2).lit
+		pos: p.tok.pos()
+	})
+	base := p.reg_or_alias()
+	p.check(.rpar)
+	return ast.AsmAddressing{
+		mode: .base_plus_displacement
+		base: base
+		displacement: displacement
+		pos: pos.extend(p.prev_tok.pos())
+	}
+}
+
 fn (mut p Parser) asm_addressing() ast.AsmAddressing {
 	pos := p.tok.pos()
 	p.check(.lsbr)