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[Qemu-devel] [PATCH v2 27/47] acpi: add acpi_string() term


From: Igor Mammedov
Subject: [Qemu-devel] [PATCH v2 27/47] acpi: add acpi_string() term
Date: Thu, 22 Jan 2015 14:50:11 +0000

Signed-off-by: Igor Mammedov <address@hidden>
---
 hw/acpi/acpi-build-utils.c         | 26 ++++++++++++++++++++++++++
 include/hw/acpi/acpi-build-utils.h |  1 +
 2 files changed, 27 insertions(+)

diff --git a/hw/acpi/acpi-build-utils.c b/hw/acpi/acpi-build-utils.c
index 1affed2..fedf871 100644
--- a/hw/acpi/acpi-build-utils.c
+++ b/hw/acpi/acpi-build-utils.c
@@ -587,6 +587,32 @@ AcpiAml acpi_field(const char *name, acpiFieldFlags flags)
     return var;
 }
 
+/* ACPI 5.0: 20.2.3 Data Objects Encoding: String */
+AcpiAml GCC_FMT_ATTR(1, 2) acpi_string(const char *name_format, ...)
+{
+    AcpiAml var = aml_allocate_internal(0, NON_BLOCK);
+    va_list ap, va_len;
+    char *s;
+    int len;
+
+    va_start(ap, name_format);
+    va_copy(va_len, ap);
+    len = vsnprintf(NULL, 0, name_format, va_len);
+    va_end(va_len);
+    len += 1;
+    s = g_new(typeof(*s), len);
+
+    len = vsnprintf(s, len, name_format, ap);
+    va_end(ap);
+
+    build_append_byte(var.buf, 0x0D); /* StringPrefix */
+    g_array_append_vals(var.buf, s, len);
+    build_append_byte(var.buf, 0x0); /* NullChar */
+    g_free(s);
+
+    return var;
+}
+
 /* ACPI 5.0: 20.2.6.2 Local Objects Encoding: Local0Op */
 AcpiAml acpi_local0(void)
 {
diff --git a/include/hw/acpi/acpi-build-utils.h 
b/include/hw/acpi/acpi-build-utils.h
index 8261ee5..c823fb8 100644
--- a/include/hw/acpi/acpi-build-utils.h
+++ b/include/hw/acpi/acpi-build-utils.h
@@ -58,6 +58,7 @@ AcpiAml acpi_io(acpiIODecode dec, uint16_t min_base, uint16_t 
max_base,
 AcpiAml acpi_operation_region(const char *name, acpiRegionSpace rs,
                               uint32_t offset, uint32_t len);
 AcpiAml acpi_named_field(const char *name, unsigned length);
+AcpiAml GCC_FMT_ATTR(1, 2) acpi_string(const char *name_format, ...);
 AcpiAml acpi_local0(void);
 
 /* Block ASL object primitives */
-- 
1.8.3.1




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