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Support calling out to an external ABC. 

$ make ABCEXTERNAL=my-abc && make ABCEXTERNAL=my-abc install

configures yosys to use an external ABC executable instead of
building and installing the in-tree ABC copy (yosys-abc).
This commit is contained in:
Sergey Kvachonok 2016-03-19 18:36:18 +03:00
parent e5d42ebb4d
commit 2656b2c55a
2 changed files with 16 additions and 4 deletions
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8
Makefile
View File

@ -82,6 +82,10 @@ ABCREV = ae7d65e71adc
ABCPULL = 1
ABCMKARGS = CC="$(CXX)" CXX="$(CXX)"
# set ABCEXTERNAL = "abc-command" to use an external ABC instance
# Note: The in-tree ABC (yosys-abc) will not be installed when ABCEXTERNAL is set.
ABCEXTERNAL =
define newline
@ -204,7 +208,11 @@ endif
ifeq ($(ENABLE_ABC),1)
CXXFLAGS += -DYOSYS_ENABLE_ABC
ifeq ($(ABCEXTERNAL),)
TARGETS += yosys-abc$(EXE)
else
CXXFLAGS += -DYOSYS_ABC_EXE=\"$(ABCEXTERNAL)\"
endif
endif
ifeq ($(ENABLE_VERIFIC),1)

12
passes/techmap/abc.cc
View File

@ -29,6 +29,10 @@
// Kahn, Arthur B. (1962), "Topological sorting of large networks", Communications of the ACM 5 (11): 558-562, doi:10.1145/368996.369025
// http://en.wikipedia.org/wiki/Topological_sorting
#ifndef YOSYS_ABC_EXE
#define YOSYS_ABC_EXE "yosys-abc" // uses in-tree ABC by default
#endif
#define ABC_COMMAND_LIB "strash; scorr; ifraig; retime {D}; strash; dch -f; map {D}"
#define ABC_COMMAND_CTR "strash; scorr; ifraig; retime {D}; strash; dch -f; map {D}; buffer; upsize {D}; dnsize {D}; stime -p"
#define ABC_COMMAND_LUT "strash; scorr; ifraig; retime; strash; dch -f; if; mfs"
@ -1173,7 +1177,7 @@ struct AbcPass : public Pass {
log("library to a target architecture.\n");
log("\n");
log(" -exe <command>\n");
log(" use the specified command name instead of \"yosys-abc\" to execute ABC.\n");
log(" use the specified command name instead of \"" YOSYS_ABC_EXE "\" to execute ABC.\n");
log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
log("\n");
log(" -script <file>\n");
@ -1298,7 +1302,7 @@ struct AbcPass : public Pass {
log_header("Executing ABC pass (technology mapping using ABC).\n");
log_push();
std::string exe_file = proc_self_dirname() + "yosys-abc";
std::string exe_file = proc_self_dirname() + YOSYS_ABC_EXE;
std::string script_file, liberty_file, constr_file, clk_str, delay_target;
bool fast_mode = false, dff_mode = false, keepff = false, cleanup = true;
bool show_tempdir = false;
@ -1311,8 +1315,8 @@ struct AbcPass : public Pass {
enabled_gates.clear();
#ifdef _WIN32
if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\yosys-abc.exe"))
exe_file = proc_self_dirname() + "..\\yosys-abc";
if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\" YOSYS_ABC_EXE ".exe"))
exe_file = proc_self_dirname() + "..\\" YOSYS_ABC_EXE;
#endif
size_t argidx;