38ce95db3b
Redo format for Branches and Jumps ( Must update NNPC not NPC )
Now all branches and jumps look like they auto-generate correctly from isa_parser.py!!!
arch/mips/isa/decoder.isa:
Support for All Jump Instructions ..
arch/mips/isa/formats/branch.isa:
Redo format for Branches and Jumps ( Must update NNPC not NPC )
arch/mips/isa/formats/util.isa:
define clear_exe_inst_hazards for later use
--HG--
extra : convert_revision : 63618ed12ee6ed94c47d29619cc1cab2cbaf5cda
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// -*- mode:c++ -*-
|
|
|
|
let {{
|
|
def UncondCtrlBase(name, Name, base_class, npc_expr, flags):
|
|
# Declare basic control transfer w/o link (i.e. link reg is R31)
|
|
nolink_code = 'NPC = %s;\n' % npc_expr
|
|
nolink_iop = InstObjParams(name, Name, base_class,
|
|
CodeBlock(nolink_code), flags)
|
|
header_output = BasicDeclare.subst(nolink_iop)
|
|
decoder_output = BasicConstructor.subst(nolink_iop)
|
|
exec_output = BasicExecute.subst(nolink_iop)
|
|
|
|
# Generate declaration of '*AndLink' version, append to decls
|
|
link_code = 'Ra = NPC & ~3;\n' + nolink_code
|
|
link_iop = InstObjParams(name, Name + 'AndLink', base_class,
|
|
CodeBlock(link_code), flags)
|
|
header_output += BasicDeclare.subst(link_iop)
|
|
decoder_output += BasicConstructor.subst(link_iop)
|
|
exec_output += BasicExecute.subst(link_iop)
|
|
|
|
# need to use link_iop for the decode template since it is expecting
|
|
# the shorter version of class_name (w/o "AndLink")
|
|
|
|
return (header_output, decoder_output,
|
|
JumpOrBranchDecode.subst(nolink_iop), exec_output)
|
|
}};
|
|
|
|
output exec {{
|
|
|
|
/// CLEAR ALL CPU INST/EXE HAZARDS
|
|
inline void
|
|
clear_exe_inst_hazards()
|
|
{
|
|
//CODE HERE
|
|
}
|
|
}
|