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>

1 files changed, 81 insertions, 0 deletions

diff --git a/bsd-user/i386/target_arch_elf.h b/bsd-user/i386/target_arch_elf.h
new file mode 100644
index 0000000000..84f61bd930
--- /dev/null
+++ b/bsd-user/i386/target_arch_elf.h
@@ -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_ */