V850 Support

Signed-off-by: Peng Fan <van.freenix@gmail.com>

11 files changed, 207 insertions, 2 deletions

diff --git a/init.c b/init.c
index c50d448..f36109c 100644
--- a/init.c
+++ b/init.c
@@ -23,7 +23,16 @@
  * Configure base RTEMS resources.
  */
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+/*
+ * v850sim bsp only has 1M ram
+ */
+#if defined(__v850__)
+#define CONFIGURE_MEMORY_OVERHEAD                  210
+#else
 #define CONFIGURE_MEMORY_OVERHEAD                  512
+#endif
+
 #define CONFIGURE_MAXIMUM_TASKS                    rtems_resource_unlimited (10)
 #define CONFIGURE_MAXIMUM_SEMAPHORES               rtems_resource_unlimited (10)
 #define CONFIGURE_MAXIMUM_MESSAGE_QUEUES           rtems_resource_unlimited (5)
@@ -54,7 +63,9 @@
 #define CONFIGURE_ATA_DRIVER_TASK_PRIORITY         14
 #endif
 
+#if !defined(__v850__)
 #define CONFIGURE_FILESYSTEM_ALL
+#endif
 
 /**
  * Tell confdefs.h to provide the configuration.
diff --git a/libbsd/include/arch/v850/machine/ansi.h b/libbsd/include/arch/v850/machine/ansi.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libbsd/include/arch/v850/machine/ansi.h
diff --git a/libbsd/include/arch/v850/machine/asm.h b/libbsd/include/arch/v850/machine/asm.h
new file mode 100644
index 0000000..b3a7a95
--- /dev/null
+++ b/libbsd/include/arch/v850/machine/asm.h
@@ -0,0 +1,2 @@
+
+#define __CONCAT(x,y) x ## y
diff --git a/libbsd/include/arch/v850/machine/cdefs.h b/libbsd/include/arch/v850/machine/cdefs.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libbsd/include/arch/v850/machine/cdefs.h
diff --git a/libbsd/include/arch/v850/machine/elf_machdep.h b/libbsd/include/arch/v850/machine/elf_machdep.h
new file mode 100644
index 0000000..b76d149
--- /dev/null
+++ b/libbsd/include/arch/v850/machine/elf_machdep.h
@@ -0,0 +1,74 @@
+#define ELF32_MACHDEP_ENDIANNESS		ELFDATA2LSB
+
+#define ELF32_MACHDEP_ID_CASES \
+	case EM_V850: \
+		break;
+
+#define ELF32_MACHDEP_ID	EM_V850
+
+
+
+#define EF_V850_ARCH		0xf0000000
+#define E_V850_ARCH		0x00000000
+#define E_V850E_ARCH		0x10000000
+#define E_V850E1_ARCH		0x20000000
+#define E_V850E2_ARCH		0x30000000
+#define E_V850E2V3_ARCH		0x40000000
+
+#define ARCH_ELFSIZE	32
+
+
+#define		R_V850_NONE								0
+#define		R_V850_9_PCREL						1
+#define		R_V850_22_PCREL						2
+#define		R_V850_HI16_S							3
+#define		R_V850_HI16								4
+#define		R_V850_LO16								5
+#define		R_V850_ABS32							6
+#define		R_V850_16									7
+#define		R_V850_8									8
+#define		R_V850_SDA_16_16_OFFSET		9
+#define		R_V850_SDA_15_16_OFFSET		10
+#define		R_V850_ZDA_16_16_OFFSET		11
+#define		R_V850_ZDA_15_16_OFFSET		12
+#define		R_V850_TDA_6_8_OFFSET			13
+#define		R_V850_TDA_7_8_OFFSET			14
+#define		R_V850_TDA_7_7_OFFSET			15
+#define		R_V850_TDA_16_16_OFFSET		16
+#define		R_V850_TDA_4_5_OFFSET			17
+#define		R_V850_TDA_4_4_OFFSET			18
+#define		R_V850_SDA_16_16_SPLIT_OFFSET		19
+#define		R_V850_ZDA_16_16_SPLIT_OFFSET		20
+#define		R_V850_CALLT_6_7_OFFSET			21
+#define		R_V850_CALLT_16_16_OFFSET		22
+#define		R_V850_GNU_VTINHERIT				23
+#define		R_V850_GNU_VTENTRY					24
+#define		R_V850_LONGCALL							25
+#define		R_V850_LONGJUMP							26
+#define		R_V850_ALIGN								27
+#define		R_V850_REL32								28
+#define		R_V850_LO16_SPLIT_OFFSET		29
+#define		R_V850_16_PCREL							30
+#define		R_V850_17_PCREL							31
+#define		R_V850_23										32
+#define		R_V850_32_PCREL							33
+#define		R_V850_32_ABS								34
+#define		R_V850_16_SPLIT_OFFSET			35
+#define		R_V850_16_S1								36
+#define		R_V850_LO16_S1							37
+#define		R_V850_CALLT_15_16_OFFSET		38
+#define		R_V850_32_GOTPCREL					39
+#define		R_V850_16_GOT								40
+#define		R_V850_32_GOT								41
+#define		R_V850_22_PLT								42
+#define		R_V850_32_PLT								43
+#define		R_V850_COPY									44
+#define		R_V850_GLOB_DAT							45
+#define		R_V850_JMP_SLOT							46
+#define		R_V850_RELATIVE							47
+#define		R_V850_16_GOTOFF						48
+#define		R_V850_32_GOTOFF						49
+#define		R_V850_CODE									50
+#define		R_V850_DATA									51
+
+#define R_TYPE(name)		__CONCAT(R_V850_,name)
diff --git a/libbsd/include/arch/v850/machine/int_types.h b/libbsd/include/arch/v850/machine/int_types.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libbsd/include/arch/v850/machine/int_types.h
diff --git a/rtl-mdreloc-v850.c b/rtl-mdreloc-v850.c
new file mode 100644
index 0000000..aaa9ba3
--- /dev/null
+++ b/rtl-mdreloc-v850.c
@@ -0,0 +1,97 @@
+
+#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);
+  }
+
+  switch (ELF_R_TYPE(rela->r_info)) {
+    case R_TYPE(NONE):
+      break;
+
+    case R_TYPE(HI16_S):
+      tmp = (Elf_Sword)(symvalue + rela->r_addend) >> 16;
+      ((uint16_t *)where)[0] = tmp & 0xffff;
+      break;
+
+    case R_TYPE(LO16):
+      tmp = symvalue + rela->r_addend;
+      ((uint16_t *)where)[0] = tmp & 0xffff;
+      break;
+
+    case R_TYPE(LO16_S1):
+      tmp = symvalue + rela->r_addend;
+      ((uint16_t *)where)[0] = tmp & 0xfffe | 0x1;
+      break;
+
+    case R_TYPE(22_PCREL):
+      tmp =  symvalue + rela->r_addend - (Elf_Addr)where;
+      if (((Elf_Sword)tmp > 0x1fffff) || ((Elf_Sword)tmp < -0x200000)) {
+        printf("Overflow\n");
+        return false;
+      }
+
+      ((uint16_t *)where)[0] = (*(uint16_t *)where & 0xffc0) |
+        ((tmp >> 16) & 0x3f);
+      ((uint16_t *)where)[1] = (tmp & 0xfffe);
+
+      break;
+
+    case R_TYPE(ABS32):
+      tmp = symvalue + rela->r_addend;
+      tmp += ((uint16_t *)where)[0];
+      tmp += ((uint16_t *)where)[1] << 16;
+      ((uint16_t *)where)[0] = tmp & 0xffff;
+      ((uint16_t *)where)[1] = (tmp >> 16) & 0xffff;
+      break;
+
+    default:
+      rtems_rtl_set_error (EINVAL, "rela type record not supported");
+      printf("error reloc type\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;
+}
diff --git a/shell-init b/shell-init
index e9005b6..0859000 100644
--- a/shell-init
+++ b/shell-init
@@ -1,5 +1,5 @@
 #rtl-trace set all
-#rtl-trace set load load-sect symbol reloc #unresolved
+rtl-trace set load load-sect symbol reloc #unresolved
 #dlo libx.a:xa.c.1.o
 #dlo libx.a:x-long-name-to-create-gnu-extension-in-archive.c.1.o
 #dlo x.rap
diff --git a/testcase/Readme b/testcase/Readme
index 7efb078..364b163 100644
--- a/testcase/Readme
+++ b/testcase/Readme
@@ -42,3 +42,12 @@ lm32:
  Simulator:
     lm32_evr-gdb build/lm32-rtems4.11-lm32_evr/rtld
     qemu-system-lm32  -M lm32-evr -nographic -global lm32,sys.enabled=1 -kernel build/lm32-rtems4.11-lm32_evr/rtld
+
+v850:
+ Because the v850sim only has 1MB ram, the memory allocation should be considered carefully.
+ Otherwise, error will be incured.
+
+ configure --rtems=/opt/rtems-4.11 --rtems-tools=/opt/rtems-4.11 --rtems-archs=v850 --rtems-bsps=v850/v850sim
+
+ Simulator:
+    v850sim-gdb build/v850-rtems4.11-v850sim/rtld
diff --git a/testcase/wscript b/testcase/wscript
index 8698fd7..f38c124 100644
--- a/testcase/wscript
+++ b/testcase/wscript
@@ -96,6 +96,18 @@ def build(bld):
                          '--entry', 'my_main'],
       source = ['1.c', '2.c'])
 
+    elif arch == 'v850':
+#   cflags = '-mlong-calls -fno-common',
+      bld(target = 'test.rap',
+      features = 'c rap',
+      xxxx = 'hello',
+
+      cflags = '-fno-common',
+
+      rtems_linkflags = ['--base', 'rtld.prelink',
+                         '--entry', '_my_main'],
+      source = ['1.c', '2.c'])
+
     bld(target = '../test.rap',
 				source = ['test.rap'],
 				rule = 'cp ${SRC} ${TGT}')
diff --git a/wscript b/wscript
index a86d7ce..5380b9a 100644
--- a/wscript
+++ b/wscript
@@ -66,7 +66,7 @@ def build(bld):
     #
     # The ARM as special BSP initialise code.
     #
-    if arch == 'arm' or arch == 'powerpc' or arch == 'mips' or arch == 'bfin' or arch == 'h8300' or arch == 'lm32' or arch == 'moxie':
+    if arch == 'arm' or arch == 'powerpc' or arch == 'mips' or arch == 'bfin' or arch == 'h8300' or arch == 'lm32' or arch == 'moxie' or arch == 'v850':
         bld(target = 'bspinit',
             features = 'c',
             includes = bld.includes,