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

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This commit is contained in:
Jakub Konka 2023-04-22 16:41:25 +02:00
parent c3ce04b9e5
commit b95cdf0aeb
1 changed files with 18 additions and 4 deletions
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22
lib/std/elf.zig
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@ -719,6 +719,13 @@ pub const Elf32_Sym = extern struct {
st_info: u8, st_info: u8,
st_other: u8, st_other: u8,
st_shndx: Elf32_Section, 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 { pub const Elf64_Sym = extern struct {
st_name: Elf64_Word, st_name: Elf64_Word,
@ -727,6 +734,13 @@ pub const Elf64_Sym = extern struct {
st_shndx: Elf64_Section, st_shndx: Elf64_Section,
st_value: Elf64_Addr, st_value: Elf64_Addr,
st_size: Elf64_Xword, 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 { pub const Elf32_Syminfo = extern struct {
si_boundto: Elf32_Half, si_boundto: Elf32_Half,
@ -744,7 +758,7 @@ pub const Elf32_Rel = extern struct {
return @truncate(u24, self.r_info >> 8); return @truncate(u24, self.r_info >> 8);
} }
pub inline fn r_type(self: @This()) u8 { 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 { pub const Elf64_Rel = extern struct {
@ -755,7 +769,7 @@ pub const Elf64_Rel = extern struct {
return @truncate(u32, self.r_info >> 32); return @truncate(u32, self.r_info >> 32);
} }
pub inline fn r_type(self: @This()) u32 { 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 { pub const Elf32_Rela = extern struct {
@ -767,7 +781,7 @@ pub const Elf32_Rela = extern struct {
return @truncate(u24, self.r_info >> 8); return @truncate(u24, self.r_info >> 8);
} }
pub inline fn r_type(self: @This()) u8 { 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 { pub const Elf64_Rela = extern struct {
@ -779,7 +793,7 @@ pub const Elf64_Rela = extern struct {
return @truncate(u32, self.r_info >> 32); return @truncate(u32, self.r_info >> 32);
} }
pub inline fn r_type(self: @This()) u32 { 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 { pub const Elf32_Dyn = extern struct {