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Fix bug: forgot branchTarget() method on indirect branches.

Browse source 
arch/alpha/isa_desc:
    Add missing branchTarget() method for indirect branches.
cpu/static_inst.hh:
    Add comment clarifying when branchTarget() can be used
    on indirect branches.

--HG--
extra : convert_revision : 0dcfb36a9792a338cefceb3d1501825abace7ac5
This commit is contained in:
Steve Reinhardt 2004-02-03 07:19:05 -08:00
parent 2f369ee5d5
commit 3e5070a3f1
2 changed files with 12 additions and 4 deletions
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7
arch/alpha/isa_desc
View file

@ -1287,6 +1287,13 @@ declare {{
{
}
Addr branchTarget(ExecContext *xc)
{
Addr NPC = xc->readPC() + 4;
uint64_t Rb = xc->readIntReg(_srcRegIdx[0]);
return (Rb & ~3) | (NPC & 1);
}
std::string generateDisassembly(Addr pc, const SymbolTable *symtab)
{
std::stringstream ss;

9
cpu/static_inst.hh
View file

@ -312,10 +312,11 @@ class StaticInst : public StaticInstBase
}
/**
* Return the target address for an indirect branch (jump).
* The register value is read from the supplied execution context.
* Invalid if not an indirect branch (i.e. isIndirectCtrl()
* should be true).
* Return the target address for an indirect branch (jump). The
* register value is read from the supplied execution context, so
* the result is valid only if the execution context is about to
* execute the branch in question. Invalid if not an indirect
* branch (i.e. isIndirectCtrl() should be true).
*/
virtual Addr branchTarget(ExecContext *xc)
{