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gcc -fwhole-program needs to mark any function which is used outside the

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current compilation unit to be marked as externally_visible. We have
EXPORT_SYMBOL exactly for that purpose.

This applies to the following symbols used by x86emu and/or vm86:
- pci_read_config8
- pci_read_config16
- pci_read_config32
- pci_write_config8
- pci_write_config16
- pci_write_config32
- dev_find_pci_device
- dev_find_slot
It also applies to the main entry point of stage2:
- stage2

With this patch, I can use -fwhole-program for stage2 without any
problems. For standard compilation, this is a noop.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://coreboot.org/repository/coreboot-v3@827 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Carl-Daniel Hailfinger 2008-08-27 22:29:38 +00:00
parent 62f8ea8e9b
commit e5fcf247f2
3 changed files with 10 additions and 0 deletions
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3
include/device/device.h
View file

@ -24,6 +24,7 @@
#include <types.h> #include <types.h>
#include <device/resource.h> #include <device/resource.h>
#include <device/path.h> #include <device/path.h>
#include <shared.h>
/** /**
* Create a 32-bit value from four characters. This is better * Create a 32-bit value from four characters. This is better
@ -268,8 +269,10 @@ struct device * find_dev_path(struct bus *parent, struct device_path *path);
struct device * alloc_find_dev(struct bus *parent, struct device_path *path, struct device_id *id); struct device * alloc_find_dev(struct bus *parent, struct device_path *path, struct device_id *id);
struct device * dev_find_device (struct device_id *devid, struct device * from); struct device * dev_find_device (struct device_id *devid, struct device * from);
struct device *dev_find_pci_device(u16 vendor, u16 device, struct device *from); struct device *dev_find_pci_device(u16 vendor, u16 device, struct device *from);
EXPORT_SYMBOL(dev_find_pci_device);
struct device * dev_find_class (unsigned int class, struct device * from); struct device * dev_find_class (unsigned int class, struct device * from);
struct device * dev_find_slot (unsigned int bus, unsigned int devfn); struct device * dev_find_slot (unsigned int bus, unsigned int devfn);
EXPORT_SYMBOL(dev_find_slot);
struct device * dev_find_slot_on_smbus (unsigned int bus, unsigned int addr); struct device * dev_find_slot_on_smbus (unsigned int bus, unsigned int addr);
void default_device_constructor(struct device *dev, struct device_operations *constructor); void default_device_constructor(struct device *dev, struct device_operations *constructor);

6
include/device/pci_ops.h
View file

@ -24,11 +24,17 @@
#include <shared.h> #include <shared.h>
u8 pci_read_config8(struct device * dev, unsigned where); u8 pci_read_config8(struct device * dev, unsigned where);
EXPORT_SYMBOL(pci_read_config8);
u16 pci_read_config16(struct device * dev, unsigned where); u16 pci_read_config16(struct device * dev, unsigned where);
EXPORT_SYMBOL(pci_read_config16);
u32 pci_read_config32(struct device * dev, unsigned where); u32 pci_read_config32(struct device * dev, unsigned where);
EXPORT_SYMBOL(pci_read_config32);
void pci_write_config8(struct device * dev, unsigned where, u8 val); void pci_write_config8(struct device * dev, unsigned where, u8 val);
EXPORT_SYMBOL(pci_write_config8);
void pci_write_config16(struct device * dev, unsigned where, u16 val); void pci_write_config16(struct device * dev, unsigned where, u16 val);
EXPORT_SYMBOL(pci_write_config16);
void pci_write_config32(struct device * dev, unsigned where, u32 val); void pci_write_config32(struct device * dev, unsigned where, u32 val);
EXPORT_SYMBOL(pci_write_config32);
u8 pci_conf1_read_config8(u32 bdf, int where); u8 pci_conf1_read_config8(u32 bdf, int where);
EXPORT_SYMBOL(pci_conf1_read_config8); EXPORT_SYMBOL(pci_conf1_read_config8);

1
lib/stage2.c
View file

@ -93,3 +93,4 @@ int stage2(void)
return 0; return 0;
} }
EXPORT_SYMBOL(stage2);