basdefs.h: Add and use RTEMS_PACKED

c/src/lib/libbsp/i386/pc386/include/edid.h

@@ -87,7 +87,7 @@ typedef struct {
     uint8_t HorizontalBorder;
     uint8_t VerticalBorder;
     uint8_t Flags;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_detailed_timing_descriptor;
+} RTEMS_PACKED EDID_detailed_timing_descriptor;
 
 EDID_INLINE_ROUTINE uint16_t DTD_horizontal_active (
     EDID_detailed_timing_descriptor *dtd)
@@ -165,7 +165,7 @@ typedef struct {
     uint8_t ColorPointWhite_x;
     uint8_t ColorPointWhite_y;
     uint8_t ColorPointWhiteGamma;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_color_point_data;
+} RTEMS_PACKED EDID_color_point_data;
 
 /* Basic Display Parameters */
 /* Monitor Descriptor - Data Type Tag */
@@ -183,7 +183,7 @@ typedef struct {
 /* see  VESA, Generalized Timing Formula Standard - GTF
         Version 1.0, December 18, 1996 */
     uint8_t GTFStandard[8];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_monitor_range_limits;
+} RTEMS_PACKED EDID_monitor_range_limits;
 
 #define EDID_DTT_MonitorName                0xFC
 
@@ -225,11 +225,11 @@ typedef struct {
     uint8_t AddressableLinesLow;
     uint8_t AspectRatio_AddressableLinesHigh;
     uint8_t VerticalRate_PreferredVerticalRate;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_CVT_3_byte_code_descriptor;
+} RTEMS_PACKED EDID_CVT_3_byte_code_descriptor;
 typedef struct {
     uint8_t VersionNumber;
     EDID_CVT_3_byte_code_descriptor cvt[4];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_CVT_timing_codes_3B;
+} RTEMS_PACKED EDID_CVT_timing_codes_3B;
 
 EDID_INLINE_ROUTINE uint16_t edid1_CVT_addressable_lines_high (
     EDID_CVT_3_byte_code_descriptor *cvt)
@@ -251,7 +251,7 @@ EDID_INLINE_ROUTINE uint8_t edid1_CVT_aspect_ratio (
 typedef struct {
     uint8_t RevisionNumber;
     uint8_t EST_III[12];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_established_timings_III;
+} RTEMS_PACKED EDID_established_timings_III;
 enum EST_III {
     EST_1152x864_75Hz   = 0,
     EST_1024x768_85Hz   = 1,
@@ -313,12 +313,12 @@ typedef struct {
     uint8_t DataTypeTag;
     uint8_t Flag2;
     uint8_t DescriptorData[13];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_monitor_descriptor;
+} RTEMS_PACKED EDID_monitor_descriptor;
 
 union EDID_DTD_MD {
     EDID_detailed_timing_descriptor dtd;
     EDID_monitor_descriptor md;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE;
+} RTEMS_PACKED;
 
 #define EDID1_STI_ImageAspectRatioOff           0
 #define EDID1_STI_ImageAspectRatioMask          0x3
@@ -333,7 +333,7 @@ union EDID_DTD_MD {
 typedef struct {
     uint8_t HorizontalActivePixels;
     uint8_t ImageAspectRatio_RefreshRate;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_standard_timing_identification;
+} RTEMS_PACKED EDID_standard_timing_identification;
 
 /* Video Input Definition */
 /* Analog = 0, Digital = 1 */
@@ -446,7 +446,7 @@ typedef struct {
     union EDID_DTD_MD dtd_md[4];
     uint8_t ExtensionFlag;
     uint8_t Checksum;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE EDID_edid1;
+} RTEMS_PACKED EDID_edid1;
 
 EDID_INLINE_ROUTINE uint16_t edid1_RedX (EDID_edid1 *edid) {
     return (edid->RedXHigh<<2) | (edid->GreenRedLow>>6);

c/src/lib/libbsp/i386/pc386/include/vbe3.h

@@ -179,7 +179,7 @@ typedef struct {
     /** @brief Selector or Segment depending on whether this is used from 16bit
         protected mode or from real mode. */
     uint16_t selector;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_far_pointer;
+} RTEMS_PACKED VBE_far_pointer;
 
 /**
  * @brief Protected mode info block as defined by VBE standard.
@@ -205,7 +205,7 @@ typedef struct {
     uint8_t   InProtectMode;
     /** Checksum byte for structure. Sum over all structure bytes gives 0. */
     uint8_t   Checksum;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_protected_mode_info_block;
+} RTEMS_PACKED VBE_protected_mode_info_block;
 
 /** General VBE signature */
 #define VBE_SIGNATURE "VESA"
@@ -243,7 +243,7 @@ typedef struct {
     uint8_t   Reserved[222];
     /** Data Area for OEM Strings */
     uint8_t   OemData[256];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_vbe_info_block;
+} RTEMS_PACKED VBE_vbe_info_block;
 
 /**
  * @brief Describes graphic's mode parameter.
@@ -345,7 +345,7 @@ typedef struct {
     uint32_t  MaxPixelClock;
     /** remainder of VBE_mode_info_block */
     uint8_t   Reserved3[189];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_mode_info_block;
+} RTEMS_PACKED VBE_mode_info_block;
 
 /**
  * @brief Describes monitor synchronization.
@@ -371,7 +371,7 @@ typedef struct {
     uint16_t  RefreshRate;
     /** remainder of VBE_mode_info_block */
     uint8_t   Reserved[40];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_CRTC_info_block;
+} RTEMS_PACKED VBE_CRTC_info_block;
 
 /**
  * @brief Describes palette entry.
@@ -385,7 +385,7 @@ typedef struct {
     uint8_t   Red;
     /** DWORD alignment byte (unused) */
     uint8_t   Alignment;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_palette_entry;
+} RTEMS_PACKED VBE_palette_entry;
 
 /**
  * @brief Supplemental VBE info block.
@@ -409,7 +409,7 @@ typedef struct {
     uint8_t  *OemStringPtr;
     /** Reserved for description strings and future expansion */
     uint8_t   Reserved[221];
-} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_supplemental_vbe_info_block;
+} RTEMS_PACKED VBE_supplemental_vbe_info_block;
 
 /* VBE_vbe_info_block Capabilities */
 /** VBE Info Block - Capabilities\n

c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.c

@@ -70,7 +70,7 @@ typedef struct {
         to 32bit protected mode */
     uint16_t pm_code_selector;
     /* if this struct is to be modified update offset definitions as well */
-} RTEMS_COMPILER_PACKED_ATTRIBUTE rm_int_regs_bkp_param;
+} RTEMS_PACKED rm_int_regs_bkp_param;
 
 /* offsets to \a pm_bkp_and_param */
 #define BKP_IDTR_LIM    "0x00"
@@ -113,7 +113,7 @@ typedef struct {
     uint16_t rm_stack_pointer;
     /** data segment for real mode */
     uint16_t rm_data_segment;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE pm_bkp_and_param;
+} RTEMS_PACKED pm_bkp_and_param;
 
 /* addresses where we are going to put Interrupt buffer,
  * parameter/returned/preserved values, stack and copy code

c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h

@@ -51,7 +51,7 @@ typedef struct {
     uint16_t reg_es;
     uint16_t reg_fs;
     uint16_t reg_gs;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE i386_realmode_interrupt_registers;
+} RTEMS_PACKED i386_realmode_interrupt_registers;
 
 /**
  * @brief Returns buffer and its size usable with real mode interrupt call.

c/src/lib/libcpu/i386/cpu.h

@@ -260,7 +260,7 @@ typedef struct {
   unsigned int operation_size		: 1;
   unsigned int granularity		: 1;
   unsigned int base_address_31_24	: 8;
-} RTEMS_COMPILER_PACKED_ATTRIBUTE segment_descriptors;
+} RTEMS_PACKED segment_descriptors;
 
 /*
  * C callable function enabling to get easilly usable info from

cpukit/score/include/rtems/score/basedefs.h

@@ -230,11 +230,14 @@
  *  placed so that the least memory is used.
  */
 #if defined(__GNUC__)
-  #define RTEMS_COMPILER_PACKED_ATTRIBUTE __attribute__((packed))
+  #define RTEMS_PACKED __attribute__((__packed__))
 #else
-  #define RTEMS_COMPILER_PACKED_ATTRIBUTE
+  #define RTEMS_PACKED
 #endif
 
+/* Provided for backward compatibility */
+#define RTEMS_COMPILER_PACKED_ATTRIBUTE RTEMS_PACKED
+
 #if __cplusplus >= 201103L
   #define RTEMS_STATIC_ASSERT(cond, msg) \
     static_assert(cond, # msg)