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Move memory allocator to own func and prefix internal functions to prevent collisions

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nub31
2025-02-01 17:24:51 +01:00
parent e7d1801abc
commit 896d5a5e13
3 changed files with 30 additions and 33 deletions
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57
Nub.Lang/Nub.Lang/Backend/Custom/Generator.cs
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@@ -70,7 +70,24 @@ public class Generator
_builder.AppendLine(""" _builder.AppendLine("""
str_cmp: eb6e_alloc:
mov rax, 9
mov rsi, rdi
mov rdi, 0
mov rdx, 3
mov r10, 34
mov r8, -1
mov r9, 0
syscall
cmp rax, -1
je .error
ret
.error:
mov rax, 60
mov rdi, 1
syscall
eb6e_str_cmp:
xor rdx, rdx xor rdx, rdx
.loop: .loop:
mov al, [rsi + rdx] mov al, [rsi + rdx]
@@ -87,16 +104,8 @@ public class Generator
.equal: .equal:
mov rax, 1 mov rax, 1
ret ret
""");
_builder.AppendLine(""" eb6e_oob_error:
alloc_error:
mov rax, 60
mov rdi, 1
syscall
oob_error:
mov rax, 60 mov rax, 60
mov rdi, 139 mov rdi, 139
syscall syscall
@@ -419,7 +428,8 @@ public class Generator
private void GenerateArrayInitializer(ArrayInitializerNode arrayInitializer) private void GenerateArrayInitializer(ArrayInitializerNode arrayInitializer)
{ {
Alloc(8 + arrayInitializer.Length * 8); _builder.AppendLine($" mov rdi, {8 + arrayInitializer.Length * 8}");
_builder.AppendLine(" call eb6e_alloc");
_builder.AppendLine($" mov QWORD [rax], {arrayInitializer.Length}"); _builder.AppendLine($" mov QWORD [rax], {arrayInitializer.Length}");
} }
@@ -496,7 +506,7 @@ public class Generator
case StringType: case StringType:
_builder.AppendLine(" mov rdi, rax"); _builder.AppendLine(" mov rdi, rax");
_builder.AppendLine(" mov rsi, rcx"); _builder.AppendLine(" mov rsi, rcx");
_builder.AppendLine(" call str_cmp"); _builder.AppendLine(" call eb6e_str_cmp");
break; break;
default: default:
throw new ArgumentOutOfRangeException(nameof(type)); throw new ArgumentOutOfRangeException(nameof(type));
@@ -649,7 +659,8 @@ public class Generator
throw new Exception($"Struct {structInitializer.StructType} is not defined"); throw new Exception($"Struct {structInitializer.StructType} is not defined");
} }
Alloc(structDefinition.Members.Count * 8); _builder.AppendLine($" mov rdi, {structDefinition.Members.Count * 8}");
_builder.AppendLine(" call eb6e_alloc");
_builder.AppendLine(" mov rcx, rax"); _builder.AppendLine(" mov rcx, rax");
foreach (var initializer in structInitializer.Initializers) foreach (var initializer in structInitializer.Initializers)
@@ -739,32 +750,18 @@ public class Generator
_builder.AppendLine(" cmp rdx, rcx"); _builder.AppendLine(" cmp rdx, rcx");
if (ZeroBasedIndexing) if (ZeroBasedIndexing)
{ {
_builder.AppendLine(" jge oob_error"); _builder.AppendLine(" jge eb6e_oob_error");
_builder.AppendLine(" cmp rdx, 0"); _builder.AppendLine(" cmp rdx, 0");
} }
else else
{ {
_builder.AppendLine(" jg oob_error"); _builder.AppendLine(" jg eb6e_oob_error");
_builder.AppendLine(" cmp rdx, 1"); _builder.AppendLine(" cmp rdx, 1");
} }
_builder.AppendLine(" jl oob_error"); _builder.AppendLine(" jl eb6e_oob_error");
_builder.AppendLine(" inc rdx"); _builder.AppendLine(" inc rdx");
_builder.AppendLine(" shl rdx, 3"); _builder.AppendLine(" shl rdx, 3");
_builder.AppendLine(" add rax, rdx"); _builder.AppendLine(" add rax, rdx");
} }
private void Alloc(long bytes)
{
_builder.AppendLine(" mov rax, 9");
_builder.AppendLine(" mov rdi, 0");
_builder.AppendLine($" mov rsi, {bytes}");
_builder.AppendLine(" mov rdx, 3");
_builder.AppendLine(" mov r10, 34");
_builder.AppendLine(" mov r8, -1");
_builder.AppendLine(" mov r9, 0");
_builder.AppendLine(" syscall");
_builder.AppendLine(" cmp rax, 0");
_builder.AppendLine(" je alloc_error");
}
} }

2
Nub.Lang/Nub.Lang/Nub.Lang.csproj
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@@ -8,7 +8,7 @@
</PropertyGroup> </PropertyGroup>
<ItemGroup> <ItemGroup>
<PackageReference Include="Nub.Core" Version="1.0.1" /> <PackageReference Include="Nub.Core" Version="1.0.2" />
</ItemGroup> </ItemGroup>
</Project> </Project>

2
input/program.nub
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@@ -23,7 +23,7 @@ func main() {
x[23] = "test"; x[23] = "test";
println(x[22]); println(x[23]);
println(arr_size(x)); println(arr_size(x));
} }