[coreboot] [PATCH] v3: prepare stage2 for -fwhole-program
Carl-Daniel Hailfinger
c-d.hailfinger.devel.2006 at gmx.net
Wed Aug 27 02:59:33 CEST 2008
gcc -fwhole-program needs to mark any function which is used outside the
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 -fwohle-program for stage2 without any
problems. For standard compilation, this is a noop.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Index: corebootv3-makefilerewrite-fwholeprogram/include/device/pci_ops.h
===================================================================
--- corebootv3-makefilerewrite-fwholeprogram/include/device/pci_ops.h (Revision 824)
+++ corebootv3-makefilerewrite-fwholeprogram/include/device/pci_ops.h (Arbeitskopie)
@@ -24,11 +24,17 @@
#include <shared.h>
u8 pci_read_config8(struct device * dev, unsigned where);
+EXPORT_SYMBOL(pci_read_config8);
u16 pci_read_config16(struct device * dev, unsigned where);
+EXPORT_SYMBOL(pci_read_config16);
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);
+EXPORT_SYMBOL(pci_write_config8);
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);
+EXPORT_SYMBOL(pci_write_config32);
u8 pci_conf1_read_config8(u32 bdf, int where);
EXPORT_SYMBOL(pci_conf1_read_config8);
Index: corebootv3-makefilerewrite-fwholeprogram/include/device/device.h
===================================================================
--- corebootv3-makefilerewrite-fwholeprogram/include/device/device.h (Revision 824)
+++ corebootv3-makefilerewrite-fwholeprogram/include/device/device.h (Arbeitskopie)
@@ -24,6 +24,7 @@
#include <types.h>
#include <device/resource.h>
#include <device/path.h>
+#include <shared.h>
/**
* Create a 32-bit value from four characters. This is better
@@ -268,8 +269,10 @@
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_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_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);
void default_device_constructor(struct device *dev, struct device_operations *constructor);
Index: corebootv3-makefilerewrite-fwholeprogram/lib/stage2.c
===================================================================
--- corebootv3-makefilerewrite-fwholeprogram/lib/stage2.c (Revision 824)
+++ corebootv3-makefilerewrite-fwholeprogram/lib/stage2.c (Arbeitskopie)
@@ -93,3 +93,4 @@
return 0;
}
+EXPORT_SYMBOL(stage2);
--
http://www.hailfinger.org/
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