zig

commit b95cdf0aeb4d4d31c0b6a54302ef61baec8f6773 (tree)
parent c3ce04b9e548b0dbf2c286e7c764320620f06bf9
Author: Jakub Konka <kubkon@jakubkonka.com>
Date:   Sat, 22 Apr 2023 16:41:25 +0200

elf: add helpers for extracting type and bind from symbol def

Diffstat:
M
lib/std/elf.zig
 | 
22
++++++++++++++++++----

1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/lib/std/elf.zig b/lib/std/elf.zig
@@ -719,6 +719,13 @@ pub const Elf32_Sym = extern struct {
     st_info: u8,
     st_other: u8,
     st_shndx: Elf32_Section,
+
+    pub inline fn st_type(self: @This()) u4 {
+        return @truncate(u4, self.st_info);
+    }
+    pub inline fn st_bind(self: @This()) u4 {
+        return @truncate(u4, self.st_info >> 4);
+    }
 };
 pub const Elf64_Sym = extern struct {
     st_name: Elf64_Word,
@@ -727,6 +734,13 @@ pub const Elf64_Sym = extern struct {
     st_shndx: Elf64_Section,
     st_value: Elf64_Addr,
     st_size: Elf64_Xword,
+
+    pub inline fn st_type(self: @This()) u4 {
+        return @truncate(u4, self.st_info);
+    }
+    pub inline fn st_bind(self: @This()) u4 {
+        return @truncate(u4, self.st_info >> 4);
+    }
 };
 pub const Elf32_Syminfo = extern struct {
     si_boundto: Elf32_Half,
@@ -744,7 +758,7 @@ pub const Elf32_Rel = extern struct {
         return @truncate(u24, self.r_info >> 8);
     }
     pub inline fn r_type(self: @This()) u8 {
-        return @truncate(u8, self.r_info & 0xff);
+        return @truncate(u8, self.r_info);
     }
 };
 pub const Elf64_Rel = extern struct {
@@ -755,7 +769,7 @@ pub const Elf64_Rel = extern struct {
         return @truncate(u32, self.r_info >> 32);
     }
     pub inline fn r_type(self: @This()) u32 {
-        return @truncate(u32, self.r_info & 0xffffffff);
+        return @truncate(u32, self.r_info);
     }
 };
 pub const Elf32_Rela = extern struct {
@@ -767,7 +781,7 @@ pub const Elf32_Rela = extern struct {
         return @truncate(u24, self.r_info >> 8);
     }
     pub inline fn r_type(self: @This()) u8 {
-        return @truncate(u8, self.r_info & 0xff);
+        return @truncate(u8, self.r_info);
     }
 };
 pub const Elf64_Rela = extern struct {
@@ -779,7 +793,7 @@ pub const Elf64_Rela = extern struct {
         return @truncate(u32, self.r_info >> 32);
     }
     pub inline fn r_type(self: @This()) u32 {
-        return @truncate(u32, self.r_info & 0xffffffff);
+        return @truncate(u32, self.r_info);
     }
 };
 pub const Elf32_Dyn = extern struct {