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[MCJIT] Make MCJIT honor symbol visibility settings when populating the global

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symbol table.

Patch by Anthony Pesch. Thanks Anthony!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220245 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2014-10-20 23:39:54 +00:00
parent a37862e2de
commit 32aaaeaa05
10 changed files with 62 additions and 7 deletions
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12
include/llvm/Support/ELF.h
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@@ -1458,25 +1458,29 @@ struct Elf32_Sym {
Elf32_Addr st_value; // Value or address associated with the symbol
Elf32_Word st_size; // Size of the symbol
unsigned char st_info; // Symbol's type and binding attributes
unsigned char st_other; // Must be zero; reserved
unsigned char st_other; // Visibility in the lower 2 bits, the rest is zero
Elf32_Half st_shndx; // Which section (header table index) it's defined in
// These accessors and mutators correspond to the ELF32_ST_BIND,
// ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
unsigned char getBinding() const { return st_info >> 4; }
unsigned char getType() const { return st_info & 0x0f; }
unsigned char getVisibility() const { return st_other & 0x3; }
void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
void setBindingAndType(unsigned char b, unsigned char t) {
st_info = (b << 4) + (t & 0x0f);
}
void setVisibility(unsigned char v) {
st_other = (st_other & ~0x3) | (v & 0x3);
}
};
// Symbol table entries for ELF64.
struct Elf64_Sym {
Elf64_Word st_name; // Symbol name (index into string table)
unsigned char st_info; // Symbol's type and binding attributes
unsigned char st_other; // Must be zero; reserved
unsigned char st_other; // Visibility in the lower 2 bits, the rest is zero
Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
Elf64_Addr st_value; // Value or address associated with the symbol
Elf64_Xword st_size; // Size of the symbol
@@ -1485,11 +1489,15 @@ struct Elf64_Sym {
// symbol table entries.
unsigned char getBinding() const { return st_info >> 4; }
unsigned char getType() const { return st_info & 0x0f; }
unsigned char getVisibility() const { return st_other & 0x3; }
void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
void setBindingAndType(unsigned char b, unsigned char t) {
st_info = (b << 4) + (t & 0x0f);
}
void setVisibility(unsigned char v) {
st_other = (st_other & ~0x3) | (v & 0x3);
}
};
// The size (in bytes) of symbol table entries.