Initial commit

src/common/platform/sysLinuxDbg.cpp

@@ -0,0 +1,123 @@
+#include "common/common.h"
+
+#if KYTY_PLATFORM != KYTY_PLATFORM_LINUX
+// #error "KYTY_PLATFORM != KYTY_PLATFORM_LINUX"
+#else
+
+#include "common/platform/sysDbg.h"
+
+#include <cstdlib>
+#include <cstring>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+void SysStackWalk(void** /*stack*/, int* depth) {
+	*depth = 0;
+}
+
+void SysStackUsagePrint(sys_dbg_stack_info_t& stack) {
+	printf("stack: (0x%" PRIx64 ", %" PRIu64 ")\n", static_cast<uint64_t>(stack.commited_addr),
+	       static_cast<uint64_t>(stack.commited_size));
+	printf("code: (0x%" PRIx64 ", %" PRIu64 ")\n", static_cast<uint64_t>(stack.code_addr),
+	       static_cast<uint64_t>(stack.code_size));
+}
+
+void SysStackUsage(sys_dbg_stack_info_t& s) {
+	pid_t pid = getpid();
+
+	// printf("pid = %"I64"d\n", (int64_t)pid);
+
+	[[maybe_unused]] int result = 0;
+
+	char str[1024];
+	char str2[1024];
+	result = sprintf(str, "/proc/%d/exe", static_cast<int>(pid));
+
+	ssize_t buff_len = 0;
+	if ((buff_len = readlink(str, str2, 1023)) == -1) {
+		return;
+	}
+	str2[buff_len]   = '\0';
+	const char* name = basename(str2);
+
+	result = sprintf(str, "/proc/%d/maps", static_cast<int>(pid));
+
+	memset(&s, 0, sizeof(sys_dbg_stack_info_t));
+
+	FILE* f = fopen(str, "r");
+
+	if (f == nullptr) {
+		return;
+	}
+
+	// printf("&str = %"I64"x\n", (uint64_t)&str);
+
+	uint64_t                  addr                 = 0;
+	uint64_t                  endaddr              = 0;
+	[[maybe_unused]] uint64_t size                 = 0;
+	uint64_t                  offset               = 0;
+	uint64_t                  inode                = 0;
+	char                      permissions[8]       = {};
+	char                      device[8]            = {};
+	char                      filename[MAXPATHLEN] = {};
+
+	auto check_addr = reinterpret_cast<uintptr_t>(&f);
+
+	while (true) {
+		if (feof(f) != 0) {
+			break;
+		}
+
+		if (fgets(str, sizeof(str), f) == nullptr) {
+			break;
+		}
+
+		filename[0]    = 0;
+		permissions[0] = 0;
+		addr           = 0;
+		size           = 0;
+
+		// printf("%s", str);
+
+		// NOLINTNEXTLINE(cert-err34-c)
+		result = sscanf(str, "%" SCNx64 "-%" SCNx64 " %s %" SCNx64 " %s %" SCNx64 " %s", &addr,
+		                &endaddr, permissions, &offset, device, &inode, filename);
+
+		size = endaddr - addr;
+
+		bool read  = (strchr(permissions, 'r') != nullptr);
+		bool write = (strchr(permissions, 'w') != nullptr);
+		bool exec  = (strchr(permissions, 'x') != nullptr);
+
+		// printf("%016"I64"x, %"I64"d, %s, %d, %d\n", addr, size, filename, read, write);
+
+		if (read && write && !exec && strncmp(filename, "[stack", 6) == 0) {
+			// printf("stack: %016"I64"x, %"I64"d\n", addr, size);
+
+			if (check_addr >= addr && check_addr < addr + size) {
+				s.addr          = addr;
+				s.total_size    = size;
+				s.commited_addr = addr;
+				s.commited_size = size;
+
+				if (s.code_addr != 0) {
+					break;
+				}
+			}
+		}
+
+		if (read && !write && exec && strstr(filename, name) != nullptr) {
+			s.code_addr = addr;
+			s.code_size = size;
+
+			if (s.addr != 0) {
+				break;
+			}
+		}
+	}
+
+	result = fclose(f);
+}
+
+#endif