ACPICA: acpidump: Reduce freopen() invocations to improve portability

This patch reduces the requirement of invoking freopen() in acpidump in order
to reduce the porting effort of acpidump.

This patch achieves this by turning all acpi_os_printf(stdout) into
acpi_ut_file_printf(gbl_output_file). Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2 files changed, 135 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 035dc29..ed614f4 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -353,6 +353,13 @@ acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id);
 
 void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 offset);
 
+#ifdef ACPI_APPLICATION
+void
+acpi_ut_dump_buffer_to_file(ACPI_FILE file,
+			    u8 *buffer,
+			    u32 count, u32 display, u32 base_offset);
+#endif
+
 void acpi_ut_report_error(char *module_name, u32 line_number);
 
 void acpi_ut_report_info(char *module_name, u32 line_number);
diff --git a/drivers/acpi/acpica/utbuffer.c b/drivers/acpi/acpica/utbuffer.c
index 3c16997..038ea88 100644
--- a/drivers/acpi/acpica/utbuffer.c
+++ b/drivers/acpi/acpica/utbuffer.c
@@ -199,3 +199,131 @@ acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
 
 	acpi_ut_dump_buffer(buffer, count, display, 0);
 }
+
+#ifdef ACPI_APPLICATION
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dump_buffer_to_file
+ *
+ * PARAMETERS:  file                - File descriptor
+ *              buffer              - Buffer to dump
+ *              count               - Amount to dump, in bytes
+ *              display             - BYTE, WORD, DWORD, or QWORD display:
+ *                                      DB_BYTE_DISPLAY
+ *                                      DB_WORD_DISPLAY
+ *                                      DB_DWORD_DISPLAY
+ *                                      DB_QWORD_DISPLAY
+ *              base_offset         - Beginning buffer offset (display only)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii to a file.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_dump_buffer_to_file(ACPI_FILE file,
+			    u8 *buffer, u32 count, u32 display, u32 base_offset)
+{
+	u32 i = 0;
+	u32 j;
+	u32 temp32;
+	u8 buf_char;
+
+	if (!buffer) {
+		acpi_ut_file_printf(file,
+				    "Null Buffer Pointer in DumpBuffer!\n");
+		return;
+	}
+
+	if ((count < 4) || (count & 0x01)) {
+		display = DB_BYTE_DISPLAY;
+	}
+
+	/* Nasty little dump buffer routine! */
+
+	while (i < count) {
+
+		/* Print current offset */
+
+		acpi_ut_file_printf(file, "%6.4X: ", (base_offset + i));
+
+		/* Print 16 hex chars */
+
+		for (j = 0; j < 16;) {
+			if (i + j >= count) {
+
+				/* Dump fill spaces */
+
+				acpi_ut_file_printf(file, "%*s",
+						    ((display * 2) + 1), " ");
+				j += display;
+				continue;
+			}
+
+			switch (display) {
+			case DB_BYTE_DISPLAY:
+			default:	/* Default is BYTE display */
+
+				acpi_ut_file_printf(file, "%02X ",
+						    buffer[(acpi_size) i + j]);
+				break;
+
+			case DB_WORD_DISPLAY:
+
+				ACPI_MOVE_16_TO_32(&temp32,
+						   &buffer[(acpi_size) i + j]);
+				acpi_ut_file_printf(file, "%04X ", temp32);
+				break;
+
+			case DB_DWORD_DISPLAY:
+
+				ACPI_MOVE_32_TO_32(&temp32,
+						   &buffer[(acpi_size) i + j]);
+				acpi_ut_file_printf(file, "%08X ", temp32);
+				break;
+
+			case DB_QWORD_DISPLAY:
+
+				ACPI_MOVE_32_TO_32(&temp32,
+						   &buffer[(acpi_size) i + j]);
+				acpi_ut_file_printf(file, "%08X", temp32);
+
+				ACPI_MOVE_32_TO_32(&temp32,
+						   &buffer[(acpi_size) i + j +
+							   4]);
+				acpi_ut_file_printf(file, "%08X ", temp32);
+				break;
+			}
+
+			j += display;
+		}
+
+		/*
+		 * Print the ASCII equivalent characters but watch out for the bad
+		 * unprintable ones (printable chars are 0x20 through 0x7E)
+		 */
+		acpi_ut_file_printf(file, " ");
+		for (j = 0; j < 16; j++) {
+			if (i + j >= count) {
+				acpi_ut_file_printf(file, "\n");
+				return;
+			}
+
+			buf_char = buffer[(acpi_size) i + j];
+			if (ACPI_IS_PRINT(buf_char)) {
+				acpi_ut_file_printf(file, "%c", buf_char);
+			} else {
+				acpi_ut_file_printf(file, ".");
+			}
+		}
+
+		/* Done with that line. */
+
+		acpi_ut_file_printf(file, "\n");
+		i += 16;
+	}
+
+	return;
+}
+#endif