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headergen_v2: add floating instances and nochild flag

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Floating instances don't have an address and will only generate
child nodes and registers with offsets. The 'nochild' flag will
disable generating the children for a node but will generate the
node's own address, which can be used to generate base addresses.

Change-Id: Ib1014de94531436d5708db46aa684741e7740ace
This commit is contained in:
Aidan MacDonald 2025-01-27 00:58:11 +00:00 • committed by Solomon Peachy
parent 0f5c2877fe
commit 387f67cab6
5 changed files with 109 additions and 25 deletions
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45
utils/regtools/headergen_v2.cpp
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@ -887,6 +887,8 @@ std::string common_generator::register_address(const pseudo_node_inst_t& reg,
}
else if(inst.type == instance_t::SINGLE)
oss << to_hex(inst.addr);
else if (inst.type == instance_t::FLOATING)
return "";
else
return "#error unknown instance type";
}
@ -911,6 +913,7 @@ bool common_generator::generate_register(std::ostream& os, const pseudo_node_ins
std::string bfm_prefix = macro_basename(reg, MT_FIELD_BFM) + field_prefix();
std::string bfv_prefix = macro_basename(reg, MT_FIELD_BFV) + field_prefix();
std::string bfmv_prefix = macro_basename(reg, MT_FIELD_BFMV) + field_prefix();
bool has_addr = !addr.empty();
register_ref_t regr = reg.inst.node().reg();
/* handle register the same way as variants */
@ -923,7 +926,8 @@ bool common_generator::generate_register(std::ostream& os, const pseudo_node_ins
var_prefix.push_back("");
var_suffix.push_back("");
var_access.push_back(register_access("", regr.get()->access));
var_addr.push_back(addr);
if(has_addr)
var_addr.push_back(addr);
var_offset.push_back(offset);
std::vector< variant_ref_t > variants = regr.variants();
@ -931,9 +935,12 @@ bool common_generator::generate_register(std::ostream& os, const pseudo_node_ins
{
var_prefix.push_back(variant_xfix(variants[i].type(), true));
var_suffix.push_back(variant_xfix(variants[i].type(), false));
var_addr.push_back("(" + type_xfix(MT_REG_ADDR, true) + basename +
type_xfix(MT_REG_ADDR, false) + addr_param_str + " + " +
to_hex(variants[i].offset()) + ")");
if (has_addr)
{
var_addr.push_back("(" + type_xfix(MT_REG_ADDR, true) + basename +
type_xfix(MT_REG_ADDR, false) + addr_param_str + " + " +
to_hex(variants[i].offset()) + ")");
}
var_offset.push_back("(" + type_xfix(MT_REG_OFFSET, true) + basename +
type_xfix(MT_REG_OFFSET, false) + offset_param_str + " + " +
to_hex(variants[i].offset()));
@ -962,16 +969,26 @@ bool common_generator::generate_register(std::ostream& os, const pseudo_node_ins
* if we have support macros then we generate something like HW(basename)
* where HW is some support macros to support complex operations. Otherwise
* we just generate something like (*(volatile unsigned uintN_t)basename_addr) */
if(!has_support_macros())
if (has_addr)
{
std::ostringstream oss;
oss << "(*(volatile uint" << regr.get()->width << "_t *)" << macro_addr + addr_param_str << ")";
ctx.add(macro_var + addr_param_str, oss.str());
if(!has_support_macros())
{
std::ostringstream oss;
oss << "(*(volatile uint" << regr.get()->width << "_t *)" <<
macro_addr + addr_param_str << ")";
ctx.add(macro_var + addr_param_str, oss.str());
}
else
{
ctx.add(macro_var + addr_param_str, macro_name(MN_VARIABLE) +
"(" + var_basename + addr_param_str + ")");
}
/* print ADDR macro */
ctx.add(macro_addr + addr_param_str, var_addr[i]);
}
else
ctx.add(macro_var + addr_param_str, macro_name(MN_VARIABLE) + "(" + var_basename + addr_param_str + ")");
/* print ADDR macro */
ctx.add(macro_addr + addr_param_str, var_addr[i]);
if(has_offsets())
{
@ -1030,7 +1047,6 @@ bool common_generator::generate_register(std::ostream& os, const pseudo_node_ins
bool common_generator::generate_node(std::ostream& os, const pseudo_node_inst_t& node)
{
os << "\n";
define_align_context_t ctx;
std::vector< std::string > params;
std::string addr = register_address(node, params);
@ -1038,8 +1054,13 @@ bool common_generator::generate_node(std::ostream& os, const pseudo_node_inst_t&
std::string param_str = generate_param_str(params);
std::string macro_addr = type_xfix(MT_NODE_ADDR, true) + basename +
type_xfix(MT_NODE_ADDR, false);
bool has_addr = !addr.empty();
ctx.add(macro_addr + param_str, addr);
if (has_addr)
{
os << "\n";
ctx.add(macro_addr + param_str, addr);
}
ctx.print(os);
return true;