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8003850: add support for constants in stub code

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Remember the code section and switch back to the proper one when adding constants.

Reviewed-by: twisti, kvn
This commit is contained in:
Goetz Lindenmaier 2012-11-27 17:41:38 -08:00 • committed by Vladimir Kozlov
parent 2d2532e740
commit 8e00acca17
3 changed files with 29 additions and 11 deletions
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20
hotspot/src/share/vm/asm/assembler.hpp
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@ -348,52 +348,60 @@ class AbstractAssembler : public ResourceObj {
void end_a_stub();
// Ditto for constants.
address start_a_const(int required_space, int required_align = sizeof(double));
void end_a_const();
void end_a_const(CodeSection* cs); // Pass the codesection to continue in (insts or stubs?).
// constants support
//
// We must remember the code section (insts or stubs) in c1
// so we can reset to the proper section in end_a_const().
address long_constant(jlong c) {
CodeSection* c1 = _code_section;
address ptr = start_a_const(sizeof(c), sizeof(c));
if (ptr != NULL) {
*(jlong*)ptr = c;
_code_pos = ptr + sizeof(c);
end_a_const();
end_a_const(c1);
}
return ptr;
}
address double_constant(jdouble c) {
CodeSection* c1 = _code_section;
address ptr = start_a_const(sizeof(c), sizeof(c));
if (ptr != NULL) {
*(jdouble*)ptr = c;
_code_pos = ptr + sizeof(c);
end_a_const();
end_a_const(c1);
}
return ptr;
}
address float_constant(jfloat c) {
CodeSection* c1 = _code_section;
address ptr = start_a_const(sizeof(c), sizeof(c));
if (ptr != NULL) {
*(jfloat*)ptr = c;
_code_pos = ptr + sizeof(c);
end_a_const();
end_a_const(c1);
}
return ptr;
}
address address_constant(address c) {
CodeSection* c1 = _code_section;
address ptr = start_a_const(sizeof(c), sizeof(c));
if (ptr != NULL) {
*(address*)ptr = c;
_code_pos = ptr + sizeof(c);
end_a_const();
end_a_const(c1);
}
return ptr;
}
address address_constant(address c, RelocationHolder const& rspec) {
CodeSection* c1 = _code_section;
address ptr = start_a_const(sizeof(c), sizeof(c));
if (ptr != NULL) {
relocate(rspec);
*(address*)ptr = c;
_code_pos = ptr + sizeof(c);
end_a_const();
end_a_const(c1);
}
return ptr;
}