Rename __attribute__((packed)) --> __packed

Also unify __attribute__ ((..)) to __attribute__((..)) and
handle ((__packed__)) like ((packed))

Change-Id: Ie60a51c3fa92b5009724a5b7c2932e361bf3490c
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/15921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

24 files changed, 106 insertions, 76 deletions

diff --git a/payloads/coreinfo/bootlog_module.c b/payloads/coreinfo/bootlog_module.c
index 8a9e7a3e04..1d00744eac 100644
--- a/payloads/coreinfo/bootlog_module.c
+++ b/payloads/coreinfo/bootlog_module.c
@@ -33,7 +33,7 @@ struct cbmem_console {
 	u32 size;
 	u32 cursor;
 	u8 body[0];
-} __attribute__ ((__packed__));
+} __packed;
 
 #define CURSOR_MASK ((1 << 28) - 1)
 #define OVERFLOW (1 << 31)
diff --git a/payloads/coreinfo/cbfs_module.c b/payloads/coreinfo/cbfs_module.c
index 4502505a0f..d9f7b24fd7 100644
--- a/payloads/coreinfo/cbfs_module.c
+++ b/payloads/coreinfo/cbfs_module.c
@@ -44,7 +44,7 @@ struct cbheader {
 	u32 offset;
 	u32 architecture;
 	u32 pad[1];
-} __attribute__ ((packed));
+} __packed;
 
 struct cbfile {
 	u64 magic;
@@ -53,7 +53,7 @@ struct cbfile {
 	u32 checksum;
 	u32 offset;
 	char filename[0];
-} __attribute__ ((packed));
+} __packed;
 
 static int filecount = 0, selected = 0, start_row = 0;
 static char **filenames;
diff --git a/payloads/libpayload/arch/arm/gdb.c b/payloads/libpayload/arch/arm/gdb.c
index 7a3d9642fd..830382e8fa 100644
--- a/payloads/libpayload/arch/arm/gdb.c
+++ b/payloads/libpayload/arch/arm/gdb.c
@@ -22,10 +22,10 @@ struct gdb_regs
 	struct fp_reg
 	{
 		u8 byte[12];
-	} __attribute__((packed)) f[8];
+	} __packed f[8];
 	u32 fps;
 	u32 cpsr;
-} __attribute__((packed));
+} __packed;
 
 static const u8 type_to_signal[] = {
 	[EXC_UNDEF]  = GDB_SIGILL,
diff --git a/payloads/libpayload/arch/arm64/gdb.c b/payloads/libpayload/arch/arm64/gdb.c
index e51a2e7942..166c9ffb13 100644
--- a/payloads/libpayload/arch/arm64/gdb.c
+++ b/payloads/libpayload/arch/arm64/gdb.c
@@ -22,11 +22,11 @@ struct gdb_regs
 	struct fp_reg
 	{
 		u64 quad[2];
-	} __attribute__((packed)) f[32];
+	} __packed f[32];
 	u32 fpcr;
 	u32 fpsr;
 	u32 spsr;
-} __attribute__((packed));
+} __packed;
 
 static const u8 type_to_signal[] = {
 	[EXC_SYNC_SP0] = GDB_SIGTRAP,
diff --git a/payloads/libpayload/drivers/cbmem_console.c b/payloads/libpayload/drivers/cbmem_console.c
index 76c2abb74d..9435e1ca9f 100644
--- a/payloads/libpayload/drivers/cbmem_console.c
+++ b/payloads/libpayload/drivers/cbmem_console.c
@@ -34,7 +34,7 @@ struct cbmem_console {
 	uint32_t size;
 	uint32_t cursor;
 	uint8_t body[0];
-} __attribute__ ((__packed__));
+} __packed;
 
 #define CURSOR_MASK ((1 << 28) - 1)
 #define OVERFLOW (1 << 31)
diff --git a/payloads/libpayload/drivers/usb/ehci_private.h b/payloads/libpayload/drivers/usb/ehci_private.h
index 46ad551289..ac845e6153 100644
--- a/payloads/libpayload/drivers/usb/ehci_private.h
+++ b/payloads/libpayload/drivers/usb/ehci_private.h
@@ -55,7 +55,7 @@ typedef volatile struct {
 	u32 hcsparams;
 	u32 hccparams;
 	u64 hcsp_portroute;
-} __attribute__ ((packed)) hc_cap_t;
+} __packed hc_cap_t;
 
 typedef volatile struct {
 	u32 usbcmd;
@@ -83,7 +83,7 @@ typedef volatile struct {
 	u8 res2[0x40];
 	u32 hostpc;
 	/* hostpc register is used for CONFIG_LP_USB_EHCI_HOSTPC_ROOT_HUB_TT */
-} __attribute__ ((packed)) hc_op_t;
+} __packed hc_op_t;
 
 typedef volatile struct {
 #define QTD_TERMINATE 1
@@ -108,7 +108,7 @@ typedef volatile struct {
 #define QTD_TOGGLE_DATA1 (1 << QTD_TOGGLE_SHIFT)
 	u32 bufptrs[5];
 	u32 bufptrs64[5];
-} __attribute__ ((packed)) qtd_t;
+} __packed qtd_t;
 
 typedef volatile struct {
 	u32 horiz_link_ptr;
@@ -132,7 +132,7 @@ typedef volatile struct {
 #define QH_PIPE_MULTIPLIER_SHIFT 30
 	volatile u32 current_td_ptr;
 	volatile qtd_t td;
-} __attribute__ ((packed)) ehci_qh_t;
+} __packed ehci_qh_t;
 
 typedef struct ehci {
 	hc_cap_t *capabilities;
diff --git a/payloads/libpayload/drivers/usb/ohci_private.h b/payloads/libpayload/drivers/usb/ohci_private.h
index 58be5fa5bb..116a2b4ec6 100644
--- a/payloads/libpayload/drivers/usb/ohci_private.h
+++ b/payloads/libpayload/drivers/usb/ohci_private.h
@@ -186,7 +186,7 @@
 	   _DO NOT_ use |= to set the bits,
 	   this clears the entire state */
 	volatile u32 HcRhPortStatus[];
-     } __attribute__ ((packed)) opreg_t;
+     } __packed opreg_t;
 
 	typedef struct { /* should be 256 bytes according to spec */
 		u32 HccaInterruptTable[32];
@@ -195,14 +195,14 @@
 		volatile u32 HccaDoneHead;
 		u8 reserved[116]; /* pad according to spec */
 		u8 what[4]; /* really pad to 256 as spec only covers 252 */
-	} __attribute__ ((packed)) hcca_t;
+	} __packed hcca_t;
 
 	typedef volatile struct {
 		u32 config;
 		u32 tail_pointer;
 		u32 head_pointer;
 		u32 next_ed;
-	} __attribute__ ((packed)) ed_t;
+	} __packed ed_t;
 #define ED_HALTED 1
 #define ED_TOGGLE 2
 
@@ -220,7 +220,7 @@
 		u32 current_buffer_pointer;
 		u32 next_td;
 		u32 buffer_end;
-	} __attribute__ ((packed)) td_t;
+	} __packed td_t;
 /*
  * Bits 0 through 17 of .config won't be interpreted by the host controller
  * (HC) and, after processing the TD, the HC has to ensure those bits have
diff --git a/payloads/libpayload/drivers/usb/uhci_private.h b/payloads/libpayload/drivers/usb/uhci_private.h
index 3d796cfe19..e5114ae046 100644
--- a/payloads/libpayload/drivers/usb/uhci_private.h
+++ b/payloads/libpayload/drivers/usb/uhci_private.h
@@ -67,13 +67,13 @@ typedef struct {
 
 	u32 bufptr;
 
-} __attribute__ ((packed))
+} __packed
      td_t;
 
      typedef struct {
 	     flistp_t headlinkptr;
 	     volatile flistp_t elementlinkptr;
-     } __attribute__ ((packed))
+     } __packed
      qh_t;
 
      typedef enum { USBCMD = 0, USBSTS = 2, USBINTR = 4, FRNUM =
diff --git a/payloads/libpayload/drivers/usb/usbmsc.c b/payloads/libpayload/drivers/usb/usbmsc.c
index 17313cf88e..2c7cbe5ef2 100644
--- a/payloads/libpayload/drivers/usb/usbmsc.c
+++ b/payloads/libpayload/drivers/usb/usbmsc.c
@@ -112,14 +112,14 @@ typedef struct {
 	unsigned long bCBWCBLength:5;
 	unsigned long:3;
 	unsigned char CBWCB[31 - 15];
-} __attribute__ ((packed)) cbw_t;
+} __packed cbw_t;
 
 typedef struct {
 	unsigned int dCSWSignature;
 	unsigned int dCSWTag;
 	unsigned int dCSWDataResidue;
 	unsigned char bCSWStatus;
-} __attribute__ ((packed)) csw_t;
+} __packed csw_t;
 
 enum {
 	/*
@@ -297,7 +297,7 @@ typedef struct {
 	unsigned char res2;	//6
 	unsigned short numblocks;	//7-8
 	unsigned char control;	//9 - the block is 10 bytes long
-} __attribute__ ((packed)) cmdblock_t;
+} __packed cmdblock_t;
 
 typedef struct {
 	unsigned char command;	//0
@@ -312,7 +312,7 @@ typedef struct {
 		unsigned char length;		// for REQUEST SENSE
 	};
 	unsigned char control;	//5
-} __attribute__ ((packed)) cmdblock6_t;
+} __packed cmdblock6_t;
 
 /**
  * Like readwrite_blocks, but for soft-sectors of 512b size. Converts the
diff --git a/payloads/libpayload/drivers/usb/xhci_private.h b/payloads/libpayload/drivers/usb/xhci_private.h
index a6dcc847b0..14d0e89c2e 100644
--- a/payloads/libpayload/drivers/usb/xhci_private.h
+++ b/payloads/libpayload/drivers/usb/xhci_private.h
@@ -165,7 +165,7 @@ typedef struct {
 	trb_t *ring;
 	trb_t *cur;
 	u8 pcs;
-} __attribute__ ((packed)) transfer_ring_t;
+} __packed transfer_ring_t;
 
 #define COMMAND_RING_SIZE 4
 typedef transfer_ring_t command_ring_t;
@@ -332,8 +332,8 @@ typedef struct xhci {
 			struct {
 				u8 hciver_lo;
 				u8 hciver_hi;
-			} __attribute__ ((packed));
-		} __attribute__ ((packed));
+			} __packed;
+		} __packed;
 		union {
 			u32 hcsparams1;
 			struct {
@@ -341,8 +341,8 @@ typedef struct xhci {
 				unsigned long MaxIntrs:11;
 				unsigned long:6;
 				unsigned long MaxPorts:8;
-			} __attribute__ ((packed));
-		} __attribute__ ((packed));
+			} __packed;
+		} __packed;
 		union {
 			u32 hcsparams2;
 			struct {
@@ -352,16 +352,16 @@ typedef struct xhci {
 				unsigned long Max_Scratchpad_Bufs_Hi:5;
 				unsigned long SPR:1;
 				unsigned long Max_Scratchpad_Bufs_Lo:5;
-			} __attribute__ ((packed));
-		} __attribute__ ((packed));
+			} __packed;
+		} __packed;
 		union {
 			u32 hcsparams3;
 			struct {
 				unsigned long u1latency:8;
 				unsigned long:8;
 				unsigned long u2latency:16;
-			} __attribute__ ((packed));
-		} __attribute__ ((packed));
+			} __packed;
+		} __packed;
 		union {
 			u32 hccparams;
 			struct {
@@ -376,11 +376,11 @@ typedef struct xhci {
 				unsigned long:4;
 				unsigned long MaxPSASize:4;
 				unsigned long xECP:16;
-			} __attribute__ ((packed));
-		} __attribute__ ((packed));
+			} __packed;
+		} __packed;
 		u32 dboff;
 		u32 rtsoff;
-	} __attribute__ ((packed)) *capreg;
+	} __packed *capreg;
 
 	/* opreg is R/W is most places, so volatile access is necessary.
 	   volatile means that the compiler seeks byte writes if possible,
@@ -446,8 +446,8 @@ typedef struct xhci {
 			u32 portpmsc;
 			u32 portli;
 			u32 res;
-		} __attribute__ ((packed)) prs[];
-	} __attribute__ ((packed)) *opreg;
+		} __packed prs[];
+	} __packed *opreg;
 
 	/* R/W, volatile, MMIO -> no bitfields */
 	volatile struct hcrreg {
@@ -462,8 +462,8 @@ typedef struct xhci {
 			u32 erstba_hi;
 			u32 erdp_lo;
 			u32 erdp_hi;
-		} __attribute__ ((packed)) intrrs[]; // up to 1024, but maximum host specific, given in capreg->MaxIntrs
-	} __attribute__ ((packed)) *hcrreg;
+		} __packed intrrs[]; // up to 1024, but maximum host specific, given in capreg->MaxIntrs
+	} __packed *hcrreg;
 
 	/* R/W, volatile, MMIO -> no bitfields */
 	volatile u32 *dbreg;
diff --git a/payloads/libpayload/drivers/video/bitmap.h b/payloads/libpayload/drivers/video/bitmap.h
index 7670097411..a41a2c8233 100644
--- a/payloads/libpayload/drivers/video/bitmap.h
+++ b/payloads/libpayload/drivers/video/bitmap.h
@@ -37,7 +37,7 @@ struct bitmap_file_header {
 	uint32_t file_size;
 	uint16_t reserved[2];
 	uint32_t bitmap_offset;
-} __attribute__ ((__packed__));
+} __packed;
 
 /* Bitmap version 3 */
 
@@ -53,13 +53,13 @@ struct bitmap_header_v3 {
 	int32_t v_res;
 	uint32_t colors_used;
 	uint32_t colors_important;
-} __attribute__ ((__packed__));
+} __packed;
 
 struct bitmap_palette_element_v3 {
 	uint8_t blue;
 	uint8_t green;
 	uint8_t red;
 	uint8_t reserved;
-} __attribute__ ((__packed__));
+} __packed;
 
 #endif /* __BITMAP_H__ */
diff --git a/payloads/libpayload/include/arm/arch/exception.h b/payloads/libpayload/include/arm/arch/exception.h
index fbbce5ed3d..9a631e4614 100644
--- a/payloads/libpayload/include/arm/arch/exception.h
+++ b/payloads/libpayload/include/arm/arch/exception.h
@@ -39,7 +39,7 @@ struct exception_state
 {
 	u32 regs[16];
 	u32 cpsr;
-} __attribute__((packed));
+} __packed;
 extern struct exception_state exception_state;
 
 extern u32 exception_stack[];
diff --git a/payloads/libpayload/include/arm64/arch/exception.h b/payloads/libpayload/include/arm64/arch/exception.h
index f5026f8402..8afe39103b 100644
--- a/payloads/libpayload/include/arm64/arch/exception.h
+++ b/payloads/libpayload/include/arm64/arch/exception.h
@@ -39,7 +39,7 @@ struct exception_state
 	uint64_t elr;
 	uint64_t esr;
 	uint64_t regs[31];
-} __attribute__((packed));
+} __packed;
 
 extern struct exception_state *exception_state;
 
diff --git a/payloads/libpayload/include/cbfs_core.h b/payloads/libpayload/include/cbfs_core.h
index f45139e9aa..1f155df0ca 100644
--- a/payloads/libpayload/include/cbfs_core.h
+++ b/payloads/libpayload/include/cbfs_core.h
@@ -50,6 +50,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <compiler.h>
 
 /** These are standard values for the known compression
     alogrithms that coreboot knows about for stages and
@@ -97,7 +98,7 @@ struct cbfs_header {
 	uint32_t offset;
 	uint32_t architecture;
 	uint32_t pad[1];
-} __attribute__((packed));
+} __packed;
 
 /* this used to be flexible, but wasn't ever set to something different. */
 #define CBFS_ALIGNMENT 64
@@ -134,7 +135,7 @@ struct cbfs_file {
 	uint32_t attributes_offset;
 	uint32_t offset;
 	char filename[];
-} __attribute__((packed));
+} __packed;
 
 /* Depending on how the header was initialized, it may be backed with 0x00 or
  * 0xff. Support both. */
@@ -151,7 +152,7 @@ struct cbfs_file_attribute {
 	/* len covers the whole structure, incl. tag and len */
 	uint32_t len;
 	uint8_t data[0];
-} __attribute__((packed));
+} __packed;
 
 struct cbfs_file_attr_compression {
 	uint32_t tag;
@@ -159,7 +160,7 @@ struct cbfs_file_attr_compression {
 	/* whole file compression format. 0 if no compression. */
 	uint32_t compression;
 	uint32_t decompressed_size;
-} __attribute__((packed));
+} __packed;
 
 struct cbfs_file_attr_hash {
 	uint32_t tag;
@@ -167,7 +168,7 @@ struct cbfs_file_attr_hash {
 	uint32_t hash_type;
 	/* hash_data is len - sizeof(struct) bytes */
 	uint8_t  hash_data[];
-} __PACKED;
+} __packed;
 
 /*** Component sub-headers ***/
 
@@ -183,7 +184,7 @@ struct cbfs_stage {
 	uint64_t load;   /** Where to load in memory */
 	uint32_t len;          /** length of data to load */
 	uint32_t memlen;	   /** total length of object in memory */
-} __attribute__((packed));
+} __packed;
 
 /** this is the sub-header for payload components.  Payloads
     are loaded by coreboot at the end of the boot process */
@@ -195,7 +196,7 @@ struct cbfs_payload_segment {
 	uint64_t load_addr;
 	uint32_t len;
 	uint32_t mem_len;
-} __attribute__((packed));
+} __packed;
 
 struct cbfs_payload {
 	struct cbfs_payload_segment segments;
@@ -210,7 +211,7 @@ struct cbfs_payload {
 struct cbfs_optionrom {
 	uint32_t compression;
 	uint32_t len;
-} __attribute__((packed));
+} __packed;
 
 #define CBFS_MEDIA_INVALID_MAP_ADDRESS	((void*)(0xffffffff))
 #define CBFS_DEFAULT_MEDIA		((void*)(0x0))
diff --git a/payloads/libpayload/include/compiler.h b/payloads/libpayload/include/compiler.h
new file mode 100644
index 0000000000..f218725086
--- /dev/null
+++ b/payloads/libpayload/include/compiler.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __COMPILER_H__
+#define __COMPILER_H__
+
+#if defined(__WIN32) || defined(__WIN64)
+#define __packed __attribute__((gcc_struct, packed))
+#else
+#define __packed __attribute__((packed))
+#endif
+
+#define __aligned(x) __attribute__((aligned(x)))
+#define __always_unused __attribute__((unused))
+
+#endif
diff --git a/payloads/libpayload/include/fmap_serialized.h b/payloads/libpayload/include/fmap_serialized.h
index 3585f0bc84..1e83760442 100644
--- a/payloads/libpayload/include/fmap_serialized.h
+++ b/payloads/libpayload/include/fmap_serialized.h
@@ -56,7 +56,7 @@ struct fmap_area {
 	uint32_t size;                  /* size in bytes */
 	uint8_t  name[FMAP_STRLEN];     /* descriptive name */
 	uint16_t flags;                 /* flags for this area */
-}  __attribute__((packed));
+}  __packed;
 
 struct fmap {
 	uint8_t  signature[8];		/* "__FMAP__" (0x5F5F464D41505F5F) */
@@ -68,6 +68,6 @@ struct fmap {
 	uint16_t nareas;		/* number of areas described by
 					   fmap_areas[] below */
 	struct fmap_area areas[];
-} __attribute__((packed));
+} __packed;
 
 #endif	/* FLASHMAP_SERIALIZED_H__ */
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h
index 54e01623a1..83658d15b4 100644
--- a/payloads/libpayload/include/libpayload.h
+++ b/payloads/libpayload/include/libpayload.h
@@ -44,6 +44,7 @@
 #define _LIBPAYLOAD_H
 
 #include <libpayload-config.h>
+#include <compiler.h>
 #include <cbgfx.h>
 #include <ctype.h>
 #include <die.h>
@@ -361,7 +362,7 @@ long long int llabs(long long int j);
 u8 bin2hex(u8 b);
 u8 hex2bin(u8 h);
 void hexdump(const void *memory, size_t length);
-void fatal(const char *msg) __attribute__ ((noreturn));
+void fatal(const char *msg) __attribute__((noreturn));
 
 /* Count Leading Zeroes: clz(0) == 32, clz(0xf) == 28, clz(1 << 31) == 0 */
 static inline int clz(u32 x) { return x ? __builtin_clz(x) : sizeof(x) * 8; }
diff --git a/payloads/libpayload/include/mips/arch/exception.h b/payloads/libpayload/include/mips/arch/exception.h
index 6af5f8e793..27f0b6417b 100644
--- a/payloads/libpayload/include/mips/arch/exception.h
+++ b/payloads/libpayload/include/mips/arch/exception.h
@@ -70,7 +70,7 @@ struct exception_state_t {
 		u32 ra;
 	} regs;
 	u32 vector;
-} __attribute__((packed));
+} __packed;
 
 extern struct exception_state_t *exception_state_ptr;
 extern u32 *exception_stack_end;
diff --git a/payloads/libpayload/include/stdio.h b/payloads/libpayload/include/stdio.h
index d2db640118..431042c1ee 100644
--- a/payloads/libpayload/include/stdio.h
+++ b/payloads/libpayload/include/stdio.h
@@ -43,13 +43,13 @@ extern FILE *stdout, *stdin, *stderr;
  * @{
  */
 int snprintf(char *str, size_t size, const char *fmt, ...)
-	__attribute__ ((format (printf, 3, 4)));
+	__attribute__((format (printf, 3, 4)));
 int sprintf(char *str, const char *fmt, ...)
-	__attribute__ ((format (printf, 2, 3)));
+	__attribute__((format (printf, 2, 3)));
 int printf(const char *fmt, ...)
-	__attribute__ ((format (printf, 1, 2)));
+	__attribute__((format (printf, 1, 2)));
 int fprintf(FILE *file, const char *fmt, ...)
-	__attribute__ ((format (printf, 2, 3)));
+	__attribute__((format (printf, 2, 3)));
 /** @} */
 
 void perror(const char *s);
diff --git a/payloads/libpayload/include/stdlib.h b/payloads/libpayload/include/stdlib.h
index 689bf01b68..658fe610d0 100644
--- a/payloads/libpayload/include/stdlib.h
+++ b/payloads/libpayload/include/stdlib.h
@@ -214,8 +214,8 @@ void srand(unsigned int seed);
 /**
  * Stop execution and halt the processor (this function does not return).
  */
-void halt(void) __attribute__ ((noreturn));
-void exit(int status) __attribute__ ((noreturn));
+void halt(void) __attribute__((noreturn));
+void exit(int status) __attribute__((noreturn));
 #define abort() halt()    /**< Alias for the halt() function */
 #if IS_ENABLED(CONFIG_LP_REMOTEGDB)
 /* Override abort()/halt() to trap into GDB if it is enabled. */
diff --git a/payloads/libpayload/include/usb/usb.h b/payloads/libpayload/include/usb/usb.h
index e93a11e616..ef1892661c 100644
--- a/payloads/libpayload/include/usb/usb.h
+++ b/payloads/libpayload/include/usb/usb.h
@@ -83,13 +83,13 @@ typedef struct {
 			unsigned long ttThinkTime:2;
 			unsigned long arePortIndicatorsSupported:1;
 			unsigned long:8;
-		} __attribute__ ((packed));
+		} __packed;
 		unsigned short wHubCharacteristics;
-	} __attribute__ ((packed));
+	} __packed;
 	unsigned char bPowerOn2PwrGood;
 	unsigned char bHubContrCurrent;
 	char DeviceRemovable[];
-} __attribute__ ((packed)) hub_descriptor_t;
+} __packed hub_descriptor_t;
 
 typedef struct {
 	unsigned char bLength;
@@ -106,7 +106,7 @@ typedef struct {
 	unsigned char iProduct;
 	unsigned char iSerialNumber;
 	unsigned char bNumConfigurations;
-} __attribute__ ((packed)) device_descriptor_t;
+} __packed device_descriptor_t;
 
 typedef struct {
 	unsigned char bLength;
@@ -117,7 +117,7 @@ typedef struct {
 	unsigned char iConfiguration;
 	unsigned char bmAttributes;
 	unsigned char bMaxPower;
-} __attribute__ ((packed)) configuration_descriptor_t;
+} __packed configuration_descriptor_t;
 
 typedef struct {
 	unsigned char bLength;
@@ -129,7 +129,7 @@ typedef struct {
 	unsigned char bInterfaceSubClass;
 	unsigned char bInterfaceProtocol;
 	unsigned char iInterface;
-} __attribute__ ((packed)) interface_descriptor_t;
+} __packed interface_descriptor_t;
 
 typedef struct {
 	unsigned char bLength;
@@ -138,7 +138,7 @@ typedef struct {
 	unsigned char bmAttributes;
 	unsigned short wMaxPacketSize;
 	unsigned char bInterval;
-} __attribute__ ((packed)) endpoint_descriptor_t;
+} __packed endpoint_descriptor_t;
 
 typedef struct {
 	unsigned char bLength;
@@ -148,7 +148,7 @@ typedef struct {
 	unsigned char bNumDescriptors;
 	unsigned char bReportDescriptorType;
 	unsigned short wReportDescriptorLength;
-} __attribute__ ((packed)) hid_descriptor_t;
+} __packed hid_descriptor_t;
 
 typedef struct {
 	union {
@@ -156,14 +156,14 @@ typedef struct {
 			dev_req_recp req_recp:5;
 			dev_req_type req_type:2;
 			dev_req_dir data_dir:1;
-		} __attribute__ ((packed));
+		} __packed;
 		unsigned char bmRequestType;
-	} __attribute__ ((packed));
+	} __packed;
 	unsigned char bRequest;
 	unsigned short wValue;
 	unsigned short wIndex;
 	unsigned short wLength;
-} __attribute__ ((packed)) dev_req_t;
+} __packed dev_req_t;
 
 struct usbdev_hc;
 typedef struct usbdev_hc hci_t;
diff --git a/payloads/libpayload/include/x86/arch/exception.h b/payloads/libpayload/include/x86/arch/exception.h
index fe222aa4f2..8acdb09552 100644
--- a/payloads/libpayload/include/x86/arch/exception.h
+++ b/payloads/libpayload/include/x86/arch/exception.h
@@ -58,7 +58,7 @@ struct exception_state
 	} regs;
 	u32 error_code;
 	u32 vector;
-} __attribute__((packed));
+} __packed;
 extern struct exception_state *exception_state;
 
 extern u32 exception_stack[];
diff --git a/payloads/libpayload/liblz4/lz4_wrapper.c b/payloads/libpayload/liblz4/lz4_wrapper.c
index 6de140e403..d125ce336f 100644
--- a/payloads/libpayload/liblz4/lz4_wrapper.c
+++ b/payloads/libpayload/liblz4/lz4_wrapper.c
@@ -98,7 +98,7 @@ struct lz4_frame_header {
 	};
 	/* + uint64_t content_size iff has_content_size is set */
 	/* + uint8_t header_checksum */
-} __attribute__((packed));
+} __packed;
 
 struct lz4_block_header {
 	union {
@@ -110,7 +110,7 @@ struct lz4_block_header {
 	};
 	/* + size bytes of data */
 	/* + uint32_t block_checksum iff has_block_checksum is set */
-} __attribute__((packed));
+} __packed;
 
 size_t ulz4fn(const void *src, size_t srcn, void *dst, size_t dstn)
 {
diff --git a/payloads/libpayload/libpci/libpci.c b/payloads/libpayload/libpci/libpci.c
index 7b40e828d1..f715666a78 100644
--- a/payloads/libpayload/libpci/libpci.c
+++ b/payloads/libpayload/libpci/libpci.c
@@ -82,7 +82,7 @@ void pci_init(struct pci_access *pacc)
 	memset(pacc, 0, sizeof(*pacc));
 }
 
-void pci_cleanup(__attribute__ ((unused)) struct pci_access *pacc)
+void pci_cleanup(__attribute__((unused)) struct pci_access *pacc)
 {
 }