Initial import

tool/hash/crctab.c

@@ -0,0 +1,50 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program is distributed in the hope that it will be useful, but          │
+│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
+│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/bits/bits.h"
+#include "libc/conv/conv.h"
+#include "libc/macros.h"
+#include "libc/runtime/runtime.h"
+#include "libc/stdio/stdio.h"
+#include "libc/str/str.h"
+
+/**
+ * @fileoverview CRC Lookup Table Generator
+ * @see http://reveng.sourceforge.net/crc-catalogue/17plus.htm
+ */
+
+int main(int argc, char *argv[]) {
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s POLYNOMIAL\n", argv[0]);
+    exit(1);
+  }
+  static uint32_t tab[256];
+  crc32init(tab, strtoimax(argv[1], NULL, 0));
+  for (unsigned i = 0; i < ARRAYLEN(tab); ++i) {
+    if (i > 0) {
+      printf(",");
+      if (i % 6 == 0) {
+        printf("\n");
+      }
+    }
+    printf("0x%08x", tab[i]);
+  }
+  printf("\n");
+  return 0;
+}

tool/hash/hash.mk

@@ -0,0 +1,46 @@
+#-*-mode:makefile-gmake;indent-tabs-mode:t;tab-width:8;coding:utf-8-*-┐
+#───vi: set et ft=make ts=8 tw=8 fenc=utf-8 :vi───────────────────────┘
+
+PKGS += TOOL_HASH
+
+TOOL_HASH_SRCS := $(wildcard tool/hash/*.c)
+TOOL_HASH_COMS = $(TOOL_HASH_OBJS:%.o=%.com)
+
+TOOL_HASH_OBJS =				\
+	$(TOOL_HASH_SRCS:%=o/$(MODE)/%.zip.o)	\
+	$(TOOL_HASH_SRCS:%.c=o/$(MODE)/%.o)
+
+TOOL_HASH_BINS =				\
+	$(TOOL_HASH_COMS)			\
+	$(TOOL_HASH_COMS:%=%.dbg)
+
+TOOL_HASH_DIRECTDEPS =				\
+	LIBC_CONV				\
+	LIBC_FMT				\
+	LIBC_NEXGEN32E				\
+	LIBC_RUNTIME				\
+	LIBC_STUBS				\
+	LIBC_STDIO				\
+	LIBC_STR
+
+TOOL_HASH_DEPS :=				\
+	$(call uniq,$(foreach x,$(TOOL_HASH_DIRECTDEPS),$($(x))))
+
+o/$(MODE)/tool/hash/hash.pkg:			\
+		$(TOOL_HASH_OBJS)		\
+		$(foreach x,$(TOOL_HASH_DIRECTDEPS),$($(x)_A).pkg)
+
+o/$(MODE)/tool/hash/%.com.dbg:			\
+		$(TOOL_HASH_DEPS)		\
+		o/$(MODE)/tool/hash/%.o		\
+		o/$(MODE)/tool/hash/hash.pkg	\
+		$(CRT)				\
+		$(APE)
+	@$(APELINK)
+
+$(TOOL_HASH_OBJS):				\
+		$(BUILD_FILES)			\
+		tool/hash/hash.mk
+
+.PHONY: o/$(MODE)/tool/hash
+o/$(MODE)/tool/hash: $(TOOL_HASH_BINS) $(TOOL_HASH_CHECKS)