Stephen Warren 2f0bcd4de1 malloc: use hidden visibility ... When running sandbox, the following phases occur, each with different malloc implementations or behaviors: 1) Dynamic linker execution, using the dynamic linker's own malloc() implementation. This is fully functional. 2) After U-Boot's malloc symbol has been hooked into the GOT, but before any U-Boot code has run. This phase is entirely non-functional, since U-Boot's gd symbol is NULL and U-Boot's initf_malloc() and mem_malloc_init() have not been called. At least on Ubuntu Xenial, the dynamic linker does make both malloc() and free() calls during this phase. Currently these free() calls crash since they dereference gd, which is NULL. U-Boot itself makes no use of malloc() during this phase. 3) U-Boot execution after gd is set and initf_malloc() has been called. This is fully functional, albeit via a very simple malloc() implementation. 4) U-Boot execution after mem_malloc_init() has been called. This is fully functional with a complete malloc() implementation. Furthermore, if code that called malloc() during phase 1 calls free() in phase 3 or later, it is likely that heap corruption will occur, since U-Boot's malloc implementation will assume the pointer is part of its own heap, although it isn't. I have not actively observed this happening. To prevent phase 2 from happening, this patch makes all of U-Boot's malloc library public symbols have hidden visibility. This prevents them from being hooked into the GOT, so only code in the U-Boot binary itself actually calls them; any other code will call into the standard C library malloc(). This also avoids the "furthermore" issue mentioned above. I have seen references to this GCC pragma in blog posts from 2008, and RHEL5's ancient gcc appears to accept it fine, so I believe it's quite safe to use it without checking gcc version. Cc: Rabin Vincent <rabin@rab.in> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>		2016-03-08 15:01:47 -05:00
..
andestech	…
asm-generic	Remove unused CONFIG_MODEM_SUPPORT option and associated dead code.	2016-02-08 10:22:44 -05:00
bedbug	…
cavium	armv8: cavium: Add an implementation of ATF calling functions	2016-01-19 22:26:12 +00:00
configs	OMAP3: am3517_evm: Add NAND MTD partitions with UBI/UBIFS support	2016-03-08 15:00:40 -05:00
cramfs	…
dm	stm32x7: add support for stm32x7 serial driver	2016-02-24 18:43:54 -05:00
dt-bindings	tegra: dts: Sync up the tegra124 device tree files with Linux	2016-02-16 09:17:50 -07:00
faraday	…
fsl-mc	driver: net: fsl-mc: flib changes for MC FW 9.0.0	2016-01-27 08:13:10 -08:00
grlib	sparc: leon3: Moved GRLIB core header files to common include/grlib directory	2015-11-13 10:23:33 +02:00
jffs2	…
linux	compiler*.h: sync include/linux/compiler*.h with Linux 4.5-rc6	2016-02-29 11:43:24 -05:00
lzma	…
mtd	cfi_flash: use specific width types for cword	2015-10-27 11:51:53 +01:00
net	…
pcmcia	…
power	pmic: tps65218: add useful functions and defines	2016-02-24 18:44:07 -05:00
samsung	exynos5-dt-types: add board detection for Odroid XU3/XU3L/XU4.	2015-11-02 10:38:00 +09:00
synopsys	…
test	…
u-boot	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
usb	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
zfs	…
.gitignore	…
ACEX1K.h	…
MCD_dma.h	…
MCD_progCheck.h	…
MCD_tasksInit.h	…
SA-1100.h	…
_exports.h	malloc_simple: Add Kconfig option for using only malloc_simple in the SPL	2015-10-20 18:40:27 +02:00
adc.h	dm: adc: add simple ADC uclass implementation	2015-11-02 10:38:00 +09:00
addr_map.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
aes.h	…
ahci.h	dm: ahci: Convert to use new DM PCI API	2016-01-12 10:19:09 -07:00
ali512x.h	…
altera.h	…
ambapp.h	sparc: leon3: Moved GRLIB core header files to common include/grlib directory	2015-11-13 10:23:33 +02:00
ambapp_ids.h	sparc: leon3: Moved GRLIB core header files to common include/grlib directory	2015-11-13 10:23:33 +02:00
android_image.h	…
ansi.h	…
api_public.h	…
armcoremodule.h	…
asm-offsets.h	…
ata.h	…
atmel_hlcdc.h	…
atmel_lcd.h	…
atmel_lcdc.h	…
atmel_mci.h	…
autoboot.h	…
axp152.h	sunxi: power: Unify axp pmic function names	2015-10-20 18:40:27 +02:00
axp209.h	sunxi: power: Add support for disabling axp209 regulators	2015-10-20 18:40:27 +02:00
axp221.h	sunxi: Implement poweroff support for axp221 pmic	2016-01-26 16:20:04 +01:00
axp818.h	power: axp818: Remove duplicate register definition macros	2016-01-26 16:20:05 +01:00
axp_pmic.h	power: axp: merge separate DLDO functions into 1	2016-01-26 16:20:05 +01:00
backlight.h	dm: backlight: Add a backlight uclass	2016-01-21 20:42:36 -07:00
bcd.h	…
bios_emul.h	dm: pci: Convert bios_emu to use the driver model PCI API	2016-01-24 12:07:19 +08:00
bitfield.h	…
bmp_layout.h	…
bootcount.h	…
bootm.h	…
bootretry.h	…
bootstage.h	…
bouncebuf.h	…
bus_vcxk.h	…
bzlib.h	bzip2: Support compression for sandbox	2016-01-20 19:06:23 -07:00
cbfs.h	…
circbuf.h	…
cli.h	…
cli_hush.h	…
clk.h	dm: clk: Add support for decoding clocks from the device tree	2016-01-21 19:47:29 -07:00
cmd_spl.h	…
command.h	cmd_boot: Add a poweroff command	2016-01-13 21:05:25 -05:00
common.h	bug.h: move BUILD_BUG_* defines to include/linux/bug.h	2016-01-25 10:39:59 -05:00
common_timing_params.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
commproc.h	…
compiler.h	Revert "include/linux: move typdef for uintptr_t"	2015-12-16 07:11:15 -05:00
config_cmd_all.h	Remove unused CONFIG_CMD_HWFLOW option and associated dead code.	2016-02-08 10:22:44 -05:00
config_defaults.h	…
config_distro_bootcmd.h	distro bootcmd: enumerate PCI before network operations	2016-01-28 21:01:23 -07:00
config_distro_defaults.h	Use correct spelling of "U-Boot"	2016-02-06 12:00:59 +01:00
config_fallbacks.h	…
config_fsl_chain_trust.h	secure_boot: split the secure boot functionality in two parts	2016-01-27 08:12:32 -08:00
config_phylib_all_drivers.h	…
config_uncmd_spl.h	spl: dm: Add SPL_DM_SEQ_ALIAS config option	2016-01-13 13:20:02 +01:00
console.h	console: Add a console buffer	2015-11-19 20:27:50 -07:00
cortina.h	…
cpsw.h	drivers: net: cpsw: convert driver to adopt device driver model	2015-10-22 14:18:35 -04:00
cpu.h	…
crc.h	…
cros_ec.h	cros_ec: Use udevice instead of cros_ec_dev for keyboard functions	2015-11-19 20:13:40 -07:00
cros_ec_message.h	…
dataflash.h	…
ddr_spd.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
debug_uart.h	debug_uart: Add an option to announce the debug UART	2015-10-21 07:46:50 -06:00
dfu.h	dfu: usb: f_dfu: Set deferred call for dfu_flush() function	2016-02-24 19:12:32 +01:00
dialog_pmic.h	…
display.h	dm: video: Repurpose the 'displayport' uclass to 'display'	2016-01-21 20:42:36 -07:00
display_options.h	…
div64.h	…
dm-demo.h	…
dm.h	…
dm9000.h	…
dma.h	dm: implement a DMA uclass	2016-02-23 16:14:45 +05:30
dp83848.h	…
ds1722.h	…
ds4510.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
dtt.h	…
dwc3-omap-uboot.h	…
dwc3-uboot.h	…
dwmmc.h	mmc: dw_mmc: support fifo mode in dwc mmc driver	2015-12-01 08:07:22 -07:00
e500.h	…
ec_commands.h	…
edid.h	dm: video: Repurpose the 'displayport' uclass to 'display'	2016-01-21 20:42:36 -07:00
efi.h	…
efi_api.h	…
elf.h	…
env_attr.h	…
env_callback.h	…
env_default.h	…
env_flags.h	tools: env validate: pass values as 0-based array	2016-02-08 10:10:29 -05:00
environment.h	…
errno.h	…
ethsw.h	drivers: net: vsc9953: Add LAG support	2016-01-28 12:22:19 -06:00
exports.h	malloc_simple: Add Kconfig option for using only malloc_simple in the SPL	2015-10-20 18:40:27 +02:00
ext4fs.h	…
ext_common.h	…
exynos_lcd.h	…
fastboot.h	fastboot: Move fastboot response functions to fastboot core	2015-11-12 13:17:31 -05:00
fat.h	…
fb_mmc.h	fastboot: Implement flashing session counter	2015-11-12 13:17:32 -05:00
fb_nand.h	fastboot: Implement NAND backend	2015-11-12 13:18:58 -05:00
fdt.h	…
fdt_simplefb.h	…
fdt_support.h	…
fdtdec.h	tegra: nyan-big: Move the LCD driver to driver model	2016-02-16 09:17:51 -07:00
fis.h	…
flash.h	cfi_flash: give default CONFIG_SYS_MAX_FLASH_SECT in flash.h	2015-11-30 13:00:00 +01:00
fm_eth.h	net/fm: fix MDIO controller base on FMAN2	2015-10-29 10:34:00 -07:00
fpga.h	fpga: Add bitstream type BIT_NONE	2016-01-27 15:55:54 +01:00
fs.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_csu.h	armv7/ls1021a: move ns_access to common file	2015-10-29 10:33:58 -07:00
fsl_dcu_fb.h	…
fsl_ddr.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_ddr_dimm_params.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_ddr_sdram.h	driver/ddr/fsl: Add workaround for A009663	2016-01-25 08:24:15 -08:00
fsl_ddrc_version.h	…
fsl_debug_server.h	…
fsl_devdis.h	…
fsl_diu_fb.h	…
fsl_dspi.h	…
fsl_dtsec.h	net: Move some header files to include/	2015-10-29 10:34:00 -07:00
fsl_errata.h	fsl/ddr: updated ddr errata-A008378 for arm and power SoCs	2015-12-13 18:27:28 -08:00
fsl_esdhc.h	ARM: imx: fsl_esdhc: fix usage of low 4 bits of sysctl register	2016-01-03 15:21:21 +01:00
fsl_fman.h	fm: fdt: Move fman ucode fixup to driver code	2016-02-24 08:51:13 -08:00
fsl_ifc.h	…
fsl_immap.h	…
fsl_mdio.h	net: tsec: fsl_mdio: Fix several cosmetic issues	2016-01-28 12:22:49 -06:00
fsl_memac.h	…
fsl_pmic.h	…
fsl_qe.h	qe: move drivers/qe/qe.h to include/fsl_qe.h	2016-02-24 08:51:13 -08:00
fsl_sec.h	imx: Refactoring CAAM Job Ring structure and Secure Memory for imx7	2016-02-21 11:20:54 +01:00
fsl_sec_mon.h	…
fsl_secboot_err.h	…
fsl_sfp.h	…
fsl_tgec.h	net: Move some header files to include/	2015-10-29 10:34:00 -07:00
fsl_usb.h	drivers:usb:fsl: Add T4080 as affected soc for Erratum A007792 sw workaround	2015-12-07 00:14:59 +01:00
fsl_validate.h	secure_boot: enable chain of trust for ARM platforms	2016-01-27 08:12:49 -08:00
fsl_wdog.h	imx_watchdog: always set minimal timeout in reset_cpu	2016-01-07 17:54:53 +01:00
fuse.h	…
g_dnl.h	…
gdsys_fpga.h	hrcon: Add support for the DH variant	2015-11-12 18:04:10 -05:00
gt64120.h	…
hash.h	hash.c: Conditionally compile hash_command, static hash_show	2016-01-13 21:05:08 -05:00
hw_sha.h	…
hwconfig.h	…
i2c.h	i2c: Fix the comment to match the function described	2015-11-27 05:54:21 +01:00
i2c_eeprom.h	…
i2s.h	…
i8042.h	input: Convert i8042 to driver model	2015-11-19 20:13:41 -07:00
ide.h	block: pass block dev not num to read/write/erase()	2016-01-13 21:05:18 -05:00
image-sparse.h	sparse: Rename the file and header	2015-11-12 13:18:59 -05:00
image.h	image: Correct the OS location code to work on sandbox	2016-02-26 08:53:10 -07:00
imx_thermal.h	…
initcall.h	…
input.h	input: Change LED state bits to conform i8042 compatible keyboard	2015-11-19 20:13:42 -07:00
inttypes.h	…
iomux.h	…
ioports.h	…
iotrace.h	…
ipu_pixfmt.h	…
key_matrix.h	…
keyboard.h	input: Convert 'keyboard' driver to use input library	2015-11-19 20:13:41 -07:00
kgdb.h	…
lattice.h	…
lcd.h	lcd: fix the color testpattern in 16bit mode	2016-01-24 00:38:40 +01:00
lcd_console.h	…
lcdvideo.h	…
ld9040.h	…
led-display.h	…
led.h	…
libata.h	…
libfdt.h	…
libfdt_env.h	…
libtizen.h	…
linker_lists.h	…
linux_logo.h	…
lmb.h	…
logbuff.h	…
lxt971a.h	…
lynxkdi.h	…
malloc.h	malloc: use hidden visibility	2016-03-08 15:01:47 -05:00
mapmem.h	…
mb862xx.h	…
mc9sdz60.h	…
mc13783.h	…
mc13892.h	…
mc34704.h	…
memalign.h	…
membuff.h	Add a circular memory buffer implementation	2015-11-19 20:27:50 -07:00
menu.h	…
micrel.h	…
mii_phy.h	…
miiphy.h	net: mdio: Add mdio_free() and mdio_unregister() API	2015-10-29 14:05:50 -05:00
mipi_display.h	…
misc.h	include: Correct "requset" typoes in misc.h	2016-01-08 10:15:42 -05:00
mk48t59.h	…
mmc.h	mmc: add missing prototype for mmc_get_env_dev	2016-02-01 17:08:44 -05:00
mpc5xx.h	…
mpc5xxx.h	…
mpc5xxx_sdma.h	…
mpc8xx.h	…
mpc8xx_irq.h	…
mpc83xx.h	powerpc/83xx: fix build failure	2016-01-20 10:19:40 -05:00
mpc85xx.h	…
mpc86xx.h	…
mpc106.h	…
mpc823_lcd.h	…
mpc8260.h	Replace "extern inline" with "static inline"	2015-11-09 18:19:40 -05:00
mpc8260_irq.h	…
msc01.h	…
mtd.h	dm: implement a MTD uclass	2015-11-12 08:26:58 +08:00
mtd_node.h	…
mv88e6352.h	…
mvebu_mmc.h	…
mvmfp.h	…
nand.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
net.h	Merge branch 'master' of git://git.denx.de/u-boot-net	2016-01-28 18:42:10 -05:00
netdev.h	net: emaclite: Move driver to DM	2016-01-27 15:55:52 +01:00
ns16550.h	Revert "dm: ns16550: Add support for reg-offset property"	2016-02-29 10:26:20 -05:00
ns87308.h	…
onenand_uboot.h	…
os.h	…
palmas.h	…
panel.h	dm: panel: Add a panel uclass	2016-01-21 20:42:36 -07:00
part.h	part: Drop duplication declaration of block_dev_desc_t	2016-01-25 10:39:46 -05:00
part_efi.h	part:efi: add GUID for linux file system data	2015-11-12 15:58:57 -05:00
pc_keyb.h	…
pca953x.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
pca9564.h	…
pca9698.h	…
pch.h	dm: pch: Add get_io_base op	2016-02-05 12:47:21 +08:00
pci.h	dm: pci: Add missing forward declarations	2016-02-05 12:47:24 +08:00
pci_gt64120.h	…
pci_ids.h	x86: pci: Add PCI IDs for Wildcat Point	2015-10-21 07:46:27 -06:00
pci_msc01.h	…
pci_rom.h	dm: pci: video: Convert video and pci_rom to use DM PCI API	2016-01-12 10:19:09 -07:00
pcmcia.h	…
phy.h	net: phy: introduce a quirk PHY_FLAG_BROKEN_RESET	2016-01-28 13:20:30 -06:00
phys2bus.h	…
physmem.h	…
post.h	…
ppc_asm.tmpl	…
ppc_defs.h	…
ps2mult.h	…
pwm.h	dm: pwm: Add a PWM uclass	2016-01-21 20:42:36 -07:00
pwrseq.h	dm: Add a power sequencing uclass	2016-01-21 20:42:34 -07:00
pxa_lcd.h	…
radeon.h	…
ram.h	…
rc4.h	…
regmap.h	…
reiserfs.h	…
remoteproc.h	drivers: Introduce a simplified remoteproc framework	2015-10-22 14:18:38 -04:00
reset.h	…
rtc.h	…
rtc_def.h	…
s6e63d6.h	…
s_record.h	…
samsung-usb-phy-uboot.h	…
sandbox-adc.h	sandbox: adc: Add missing header file	2015-11-05 12:58:04 +09:00
sandboxblockdev.h	…
sandboxfs.h	…
sata.h	…
scf0403_lcd.h	…
scsi.h	…
sdhci.h	…
search.h	…
sed156x.h	…
sed13806.h	…
serial.h	serial: remove altera serial initializations	2015-10-23 07:37:03 +08:00
sh_pfc.h	…
sh_tmu.h	…
sja1000.h	…
slre.h	…
sm501.h	…
smsc_lpc47m.h	…
smsc_sio1007.h	superio: Add SMSC SIO1007 driver	2016-02-21 13:42:52 +08:00
sound.h	…
sparse_defs.h	…
sparse_format.h	…
spartan2.h	…
spartan3.h	…
spd.h	…
spd_sdram.h	…
spi.h	spi: Add support for dual and quad mode	2016-01-13 18:47:27 +05:30
spi_flash.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
spl.h	spl: mmc: add support for BOOT_DEVICE_MMC2	2015-11-18 14:50:05 -05:00
splash.h	splash_source: add support for filesystem formatted sata	2015-11-16 12:01:35 +01:00
status_led.h	allow LED initialization without STATUS_LED_BOOT	2015-10-24 13:50:02 -04:00
stdio_dev.h	video: Drop DEV_EXT_VIDEO flag	2015-11-05 08:24:42 +01:00
stdlib.h	…
stratixII.h	…
sx151x.h	…
sy8106a.h	sunxi: power: add support for sy8106a driver	2016-02-23 20:50:07 +01:00
sym53c8xx.h	…
syscon.h	dm: syscon: Allow finding devices by driver data	2016-01-24 12:07:19 +08:00
systemace.h	…
tca642x.h	…
tegra-kbc.h	…
thermal.h	…
thor.h	…
ti-usb-phy-uboot.h	…
timer.h	timer: Provide an early timer	2016-02-26 08:53:10 -07:00
timestamp.h	…
tmu.h	…
tpm.h	dm: tpm: Remove every compilation switch for TPM driver model	2015-10-23 09:42:28 -06:00
tps6586x.h	…
trace.h	…
tsec.h	net: tsec: Use priv->tbiaddr to initialize TBI PHY address	2016-01-28 12:23:19 -06:00
tsi108.h	…
tsi148.h	…
twl4030.h	…
twl6030.h	…
tws.h	…
ubi_uboot.h	…
ubifs_uboot.h	ubifs: Add functions for generic fs use	2015-10-24 13:50:32 -04:00
universe.h	…
usb.h	usb: Allow up to 7 storage devices	2016-01-07 10:27:07 -07:00
usb_cdc_acm.h	…
usb_defs.h	…
usb_ether.h	usb: eth: add Realtek RTL8152B/RTL8153 DRIVER	2016-01-23 16:22:34 +01:00
usb_mass_storage.h	ums: support multiple LUNs at once	2016-01-13 21:05:19 -05:00
usbdescriptors.h	…
usbdevice.h	…
usbroothubdes.h	…
uuid.h	uuid: add selection by string for known partition type GUID	2015-11-12 15:58:58 -05:00
vbe.h	…
version.h	…
video.h	video: Correct 'tor' typo in comment	2016-01-30 10:58:47 +01:00
video_bridge.h	…
video_console.h	video: Provide a backspace method	2016-01-30 10:55:37 +01:00
video_easylogo.h	…
video_fb.h	…
video_font.h	…
video_font_4x6.h	…
video_font_data.h	…
video_logo.h	…
virtex2.h	…
vsc7385.h	…
vsc9953.h	drivers: net: vsc9953: Add LAG support	2016-01-28 12:22:19 -06:00
vsprintf.h	vsprintf.c: Always enable CONFIG_SYS_VSNPRINTF	2016-01-19 08:31:16 -05:00
vxworks.h	cmd: bootvx: Pass E820 information to an x86 VxWorks kernel	2015-10-21 07:46:26 -06:00
w83c553f.h	…
wait_bit.h	lib: Add wait_for_bit	2016-01-25 10:39:47 -05:00
watchdog.h	…
winbond_w83627.h	misc: Add simple driver to enable the legacy UART on Winbond Super IO chips	2016-01-28 13:53:30 +08:00
xilinx.h	…
xyzModem.h	…
zfs_common.h	…
zynqpl.h	…