bsd-user: move arch specific defines out of elfload.c

Move the architecture specific defines to target_arch_elf.h and delete
them from elfload.c. Only retain ifdefs appropriate for i386 and x86_64.
Add the copyright/license comments, and guard ifdefs.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
master
Warner Losh 2021-04-29 10:41:29 -06:00
parent dd869a9665
commit 66ef252fab
3 changed files with 150 additions and 79 deletions

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@ -23,6 +23,8 @@
#include "disas/disas.h"
#include "qemu/path.h"
#include "target_arch_elf.h"
/* from personality.h */
/*
@ -93,85 +95,6 @@ enum {
#define ELIBBAD 80
#endif
#ifdef TARGET_I386
#define ELF_PLATFORM get_elf_platform()
static const char *get_elf_platform(void)
{
static char elf_platform[] = "i386";
int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
if (family > 6)
family = 6;
if (family >= 3)
elf_platform[1] = '0' + family;
return elf_platform;
}
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
X86CPU *cpu = X86_CPU(thread_cpu);
return cpu->env.features[FEAT_1_EDX];
}
#ifdef TARGET_X86_64
#define ELF_START_MMAP 0x2aaaaab000ULL
#define elf_check_arch(x) (((x) == ELF_ARCH))
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_X86_64
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->rax = 0;
regs->rsp = infop->start_stack;
regs->rip = infop->entry;
if (bsd_type == target_freebsd) {
regs->rdi = infop->start_stack;
}
}
#else /* !TARGET_X86_64 */
#define ELF_START_MMAP 0x80000000
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) (((x) == EM_386) || ((x) == EM_486))
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_386
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->esp = infop->start_stack;
regs->eip = infop->entry;
/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
starts %edx contains a pointer to a function which might be
registered using `atexit'. This provides a mean for the
dynamic linker to call DT_FINI functions for shared libraries
that have been loaded before the code runs.
A value of 0 tells we have no such handler. */
regs->edx = 0;
}
#endif /* !TARGET_X86_64 */
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
#ifndef ELF_PLATFORM
#define ELF_PLATFORM (NULL)
#endif

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@ -0,0 +1,81 @@
/*
* i386 ELF definitions
*
* Copyright (c) 2013 Stacey D. Son
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TARGET_ARCH_ELF_H_
#define _TARGET_ARCH_ELF_H_
#define ELF_PLATFORM get_elf_platform()
static const char *get_elf_platform(void)
{
static char elf_platform[] = "i386";
int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
if (family > 6) {
family = 6;
}
if (family >= 3) {
elf_platform[1] = '0' + family;
}
return elf_platform;
}
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
X86CPU *cpu = X86_CPU(thread_cpu);
return cpu->env.features[FEAT_1_EDX];
}
#define ELF_START_MMAP 0x80000000
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) (((x) == EM_386) || ((x) == EM_486))
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_386
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->esp = infop->start_stack;
regs->eip = infop->entry;
/*
* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
* starts %edx contains a pointer to a function which might be
* registered using `atexit'. This provides a mean for the
* dynamic linker to call DT_FINI functions for shared libraries
* that have been loaded before the code runs.
*
* A value of 0 tells we have no such handler.
*/
regs->edx = 0;
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* _TARGET_ARCH_ELF_H_ */

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@ -0,0 +1,67 @@
/*
* x86_64 ELF definitions
*
* Copyright (c) 2013 Stacey D. Son
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TARGET_ARCH_ELF_H_
#define _TARGET_ARCH_ELF_H_
#define ELF_PLATFORM get_elf_platform()
static const char *get_elf_platform(void)
{
static char elf_platform[] = "i386";
int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
if (family > 6) {
family = 6;
}
if (family >= 3) {
elf_platform[1] = '0' + family;
}
return elf_platform;
}
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
X86CPU *cpu = X86_CPU(thread_cpu);
return cpu->env.features[FEAT_1_EDX];
}
#define ELF_START_MMAP 0x2aaaaab000ULL
#define elf_check_arch(x) (((x) == ELF_ARCH))
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_X86_64
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->rax = 0;
regs->rsp = infop->start_stack;
regs->rip = infop->entry;
if (bsd_type == target_freebsd) {
regs->rdi = infop->start_stack;
}
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* _TARGET_ARCH_ELF_H_ */