064360e667
libgcc for boot environment isn't always present and compatible. libgcc is often absent if endianness or bit-size at boot is different from running OS. libgcc may use optimised opcodes that aren't available on boot time. So instead of relying on libgcc shipped with the compiler, supply the functions in GRUB directly. Tests are present to ensure that those replacement functions behave the way compiler expects them to.
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_XEN_HEADER
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#define GRUB_XEN_HEADER 1
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#define __XEN_INTERFACE_VERSION__ 0x0003020a
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#define memset grub_memset
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#ifdef ASM_FILE
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#define __ASSEMBLY__
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#include <xen/xen.h>
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#else
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#include <grub/symbol.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#ifndef GRUB_SYMBOL_GENERATOR
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#include <stdint.h>
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#include <xen/xen.h>
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#include <xen/sched.h>
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#include <xen/grant_table.h>
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#include <xen/io/console.h>
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#include <xen/io/xs_wire.h>
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#include <xen/io/xenbus.h>
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#include <xen/io/protocols.h>
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#endif
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#include <grub/cpu/xen/hypercall.h>
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extern grub_size_t EXPORT_VAR (grub_xen_n_allocated_shared_pages);
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#define GRUB_XEN_LOG_PAGE_SIZE 12
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#define GRUB_XEN_PAGE_SIZE (1 << GRUB_XEN_LOG_PAGE_SIZE)
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extern volatile struct xencons_interface *grub_xen_xcons;
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extern volatile struct shared_info *EXPORT_VAR (grub_xen_shared_info);
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extern volatile struct xenstore_domain_interface *grub_xen_xenstore;
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extern volatile grant_entry_v1_t *grub_xen_grant_table;
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void EXPORT_FUNC (grub_xen_store_send) (const void *buf_, grub_size_t len);
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void EXPORT_FUNC (grub_xen_store_recv) (void *buf_, grub_size_t len);
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grub_err_t
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EXPORT_FUNC (grub_xenstore_dir) (const char *dir,
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int (*hook) (const char *dir,
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void *hook_data),
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void *hook_data);
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void *EXPORT_FUNC (grub_xenstore_get_file) (const char *dir,
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grub_size_t * len);
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grub_err_t EXPORT_FUNC (grub_xenstore_write_file) (const char *dir,
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const void *buf,
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grub_size_t len);
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typedef unsigned int grub_xen_grant_t;
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void *EXPORT_FUNC (grub_xen_alloc_shared_page) (domid_t dom,
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grub_xen_grant_t * grnum);
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void EXPORT_FUNC (grub_xen_free_shared_page) (void *ptr);
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#define mb() asm volatile("mfence;sfence;" : : : "memory");
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extern struct start_info *EXPORT_VAR (grub_xen_start_page_addr);
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void grub_console_init (void);
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void grub_xendisk_fini (void);
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void grub_xendisk_init (void);
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#ifdef __x86_64__
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typedef grub_uint64_t grub_xen_mfn_t;
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#else
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typedef grub_uint32_t grub_xen_mfn_t;
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#endif
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typedef unsigned int grub_xen_evtchn_t;
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#endif
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#endif
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