From 42d16f6d37130a3550b537d35698977f06908234 Mon Sep 17 00:00:00 2001
From: Peng Fan <van.freenix@gmail.com>
Date: Mon, 22 Jul 2013 10:56:13 +0800
Subject: H8300 Support

Signed-off-by: Peng Fan <van.freenix@gmail.com>
---
 rtl-mdreloc-h8300.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 rtl-mdreloc-h8300.c

(limited to 'rtl-mdreloc-h8300.c')

diff --git a/rtl-mdreloc-h8300.c b/rtl-mdreloc-h8300.c
new file mode 100644
index 0000000..e9adeda
--- /dev/null
+++ b/rtl-mdreloc-h8300.c
@@ -0,0 +1,101 @@
+#include <sys/cdefs.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <rtl.h>
+#include "rtl-elf.h"
+#include "rtl-error.h"
+#include <rtl-trace.h>
+
+bool
+rtems_rtl_elf_rel_resolve_sym (Elf_Word type)
+{
+  return true;
+}
+
+bool
+rtems_rtl_elf_relocate_rela (const rtems_rtl_obj_t*      obj,
+                             const Elf_Rela*             rela,
+                             const rtems_rtl_obj_sect_t* sect,
+                             const char*                 symname,
+                             const Elf_Byte              syminfo,
+                             const Elf_Word              symvalue)
+{
+  Elf_Addr	*where;
+  Elf_Word	tmp;
+
+  where = (Elf_Addr *)(sect->base + rela->r_offset);
+
+  if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) {
+      printf("rela relocation type is %ld\n", ELF_R_TYPE(rela->r_info));
+      printf("relocated address 0x%08lx\n", (Elf_Addr)where);
+  }
+
+  tmp = symvalue;
+  switch (ELF_R_TYPE(rela->r_info)) {
+    case R_TYPE(NONE):
+      break;
+
+    case R_TYPE(DIR16):
+      *(uint16_t *)where += symvalue + rela->r_addend;
+      break;
+
+    case R_TYPE(DIR32):
+    case R_TYPE(DIR32A16):
+      *where += symvalue + rela->r_addend;
+      break;
+
+    case R_TYPE(DIR24A8):
+      if (ELF32_R_SYM(rela->r_info))
+        *where += symvalue + rela->r_addend;
+      break;
+
+    case R_TYPE(DIR24R8):
+      where = (uint32_t *)((uint32_t)where - 1);
+      *where = (*where & 0xff000000) | ((*where & 0xffffff) + symvalue + rela->r_addend);
+      break;
+
+    case R_TYPE(PCREL8):
+      /* bcc instruction */
+      tmp = symvalue + rela->r_addend - (Elf_Addr)where - 1;
+      if (((Elf32_Sword)tmp > 0x7f) || ((Elf32_Sword)tmp < -(Elf32_Sword)0x80)){
+        printf("PCREL8 overflow\n");
+          return false;
+      } else {
+        *(uint8_t *)where = tmp;
+      }
+      break;
+
+    case R_TYPE(PCREL16):
+      /* bcc instruction */
+      tmp = symvalue + rela->r_addend - (Elf_Addr)where - 2;
+      if (((Elf32_Sword)tmp > 0x7fff) || ((Elf32_Sword)tmp < -(Elf32_Sword)0x8000)){
+        printf("PCREL16 overflow\n");
+       return false;
+      } else {
+       *(uint16_t *)where = tmp;
+      }
+      break;
+
+    default:
+      rtems_rtl_set_error (EINVAL, "rela type record not supported");
+      printf("Unsupported reloc types\n");
+      return false;
+  }
+  return true;
+}
+
+bool
+rtems_rtl_elf_relocate_rel (const rtems_rtl_obj_t*      obj,
+                            const Elf_Rel*              rel,
+                            const rtems_rtl_obj_sect_t* sect,
+                            const char*                 symname,
+                            const Elf_Byte              syminfo,
+                            const Elf_Word              symvalue)
+{
+  rtems_rtl_set_error (EINVAL, "rel type record not supported");
+  return false;
+}
-- 
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