Introduce new linker for fat ape binaries

libc/log/printwindowsmemory.c

@@ -0,0 +1,83 @@
+/*-*- 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 2023 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/fmt/conv.h"
+#include "libc/intrin/describeflags.internal.h"
+#include "libc/intrin/kprintf.h"
+#include "libc/log/log.h"
+#include "libc/macros.internal.h"
+#include "libc/nt/enum/memflags.h"
+#include "libc/nt/memory.h"
+#include "libc/nt/struct/memorybasicinformation.h"
+#include "libc/str/str.h"
+
+static const struct DescribeFlags kNtMemState[] = {
+    {kNtMemCommit, "Commit"},    //
+    {kNtMemFree, "Free"},        //
+    {kNtMemReserve, "Reserve"},  //
+};
+
+static const char *DescribeNtMemState(char buf[64], uint32_t x) {
+  return DescribeFlags(buf, 64, kNtMemState, ARRAYLEN(kNtMemState), "kNtMem",
+                       x);
+}
+
+static const struct DescribeFlags kNtMemType[] = {
+    {kNtMemImage, "Image"},      //
+    {kNtMemMapped, "Mapped"},    //
+    {kNtMemPrivate, "Private"},  //
+};
+
+static const char *DescribeNtMemType(char buf[64], uint32_t x) {
+  return DescribeFlags(buf, 64, kNtMemType, ARRAYLEN(kNtMemType), "kNtMem", x);
+}
+
+/**
+ * Prints to stderr all memory mappings that exist according to WIN32.
+ *
+ * The `high` and `size` parameters may optionally be specified so that
+ * memory mappings which overlap `[high,high+size)` will get printed in
+ * ANSI bold red text.
+ */
+void PrintWindowsMemory(const char *high, size_t size) {
+  char *p, b[5][64];
+  const char *start, *stop;
+  struct NtMemoryBasicInformation mi;
+  kprintf("%-12s %-12s %10s %16s %16s %32s %32s\n", "Allocation", "BaseAddress",
+          "RegionSize", "State", "Type", "AllocationProtect", "Protect");
+  for (p = 0;; p = (char *)mi.BaseAddress + mi.RegionSize) {
+    const char *start, *stop;
+    bzero(&mi, sizeof(mi));
+    if (!VirtualQuery(p, &mi, sizeof(mi))) break;
+    sizefmt(b[0], mi.RegionSize, 1024);
+    if (MAX(high, (char *)mi.BaseAddress) <
+        MIN(high + size, (char *)mi.BaseAddress + mi.RegionSize)) {
+      start = "\e[1;31m";
+      stop = "\e[0m";
+    } else {
+      start = "";
+      stop = "";
+    }
+    kprintf("%s%.12lx %.12lx %10s %16s %16s %32s %32s%s\n", start,
+            mi.AllocationBase, mi.BaseAddress, b[0],
+            DescribeNtMemState(b[1], mi.State),
+            DescribeNtMemType(b[2], mi.Type),
+            (DescribeNtPageFlags)(b[3], mi.AllocationProtect),
+            (DescribeNtPageFlags)(b[4], mi.Protect), stop);
+  }
+}