remove obsolete SuperH support

We don't have a toolchain anymore, we don't have working original
kernel headers, and nobody is maintaining this so there is really
no point in keeping this here. Details of the patch:

- removed code paths from Android.mk files related to the SuperH
  architecture ("sh")

- removed libc/arch-sh, linker/arch-sh, libc/kernel/arch-sh

- simplified libc/SYSCALLS.TXT

- simplified the scripts in libc/tools/ and libc/kernel/tools

Change-Id: I26b0e1422bdc347489e4573e2fbec0e402f75560

Signed-off-by: David 'Digit' Turner <digit@android.com>

5 files changed, 3 insertions, 218 deletions

diff --git a/linker/Android.mk b/linker/Android.mk
index 60f291c..803b6c3 100644
--- a/linker/Android.mk
+++ b/linker/Android.mk
@@ -49,12 +49,6 @@ LOCAL_CFLAGS += -DANDROID_ARM_LINKER
 else
   ifeq ($(TARGET_ARCH),x86)
     LOCAL_CFLAGS += -DANDROID_X86_LINKER
-  else
-    ifeq ($(TARGET_ARCH),sh)
-      LOCAL_CFLAGS += -DANDROID_SH_LINKER
-    else
-      $(error Unsupported TARGET_ARCH $(TARGET_ARCH))
-    endif
   endif
 endif
 
diff --git a/linker/arch/sh/begin.S b/linker/arch/sh/begin.S
deleted file mode 100644
index 6f49557..0000000
--- a/linker/arch/sh/begin.S
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS
- * OF USE, DATA, OR PROFITS ; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-.text
-.align  4
-.type   _start,#function
-.globl  _start
-
-_start:
-    mov     r15, r4
-
-    mov.l   0f, r0
-    jsr     @r0
-    nop
-
-    /* linker init returns the _entry address in the main image */
-    jmp     @r0
-    nop
-
-    .balign 4
-0:  .long   __linker_init
-
-    .section .ctors, "wa"
-    .globl  __CTOR_LIST__
-__CTOR_LIST__:
-    .long   -1
diff --git a/linker/dlfcn.c b/linker/dlfcn.c
index 7161455..bdacbd3 100644
--- a/linker/dlfcn.c
+++ b/linker/dlfcn.c
@@ -175,13 +175,6 @@ int dlclose(void *handle)
 #define ANDROID_LIBDL_STRTAB \
                       "dlopen\0dlclose\0dlsym\0dlerror\0dladdr\0dl_iterate_phdr\0"
 
-#elif defined(ANDROID_SH_LINKER)
-//                     0000000 00011111 111112 22222222 2333333 3333444444444455
-//                     0123456 78901234 567890 12345678 9012345 6789012345678901
-#define ANDROID_LIBDL_STRTAB \
-                      "dlopen\0dlclose\0dlsym\0dlerror\0dladdr\0dl_iterate_phdr\0"
-
-#else /* !defined(ANDROID_ARM_LINKER) && !defined(ANDROID_X86_LINKER) */
 #error Unsupported architecture. Only ARM and x86 are presently supported.
 #endif
 
@@ -230,12 +223,6 @@ static Elf32_Sym libdl_symtab[] = {
       st_info: STB_GLOBAL << 4,
       st_shndx: 1,
     },
-#elif defined(ANDROID_SH_LINKER)
-    { st_name: 36,
-      st_value: (Elf32_Addr) &dl_iterate_phdr,
-      st_info: STB_GLOBAL << 4,
-      st_shndx: 1,
-    },
 #endif
 };
 
diff --git a/linker/linker.c b/linker/linker.c
index cc3bd21..bcfa8dc 100644
--- a/linker/linker.c
+++ b/linker/linker.c
@@ -365,7 +365,7 @@ _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int *pcount)
    *pcount = 0;
     return NULL;
 }
-#elif defined(ANDROID_X86_LINKER) || defined(ANDROID_SH_LINKER)
+#elif defined(ANDROID_X86_LINKER)
 /* Here, we only have to provide a callback to iterate across all the
  * loaded libraries. gcc_eh does the rest. */
 int
@@ -1462,101 +1462,6 @@ static int reloc_library(soinfo *si, Elf32_Rel *rel, unsigned count)
     return 0;
 }
 
-#if defined(ANDROID_SH_LINKER)
-static int reloc_library_a(soinfo *si, Elf32_Rela *rela, unsigned count)
-{
-    Elf32_Sym *symtab = si->symtab;
-    const char *strtab = si->strtab;
-    Elf32_Sym *s;
-    unsigned base;
-    Elf32_Rela *start = rela;
-    unsigned idx;
-
-    for (idx = 0; idx < count; ++idx) {
-        unsigned type = ELF32_R_TYPE(rela->r_info);
-        unsigned sym = ELF32_R_SYM(rela->r_info);
-        unsigned reloc = (unsigned)(rela->r_offset + si->base);
-        unsigned sym_addr = 0;
-        char *sym_name = NULL;
-
-        DEBUG("%5d Processing '%s' relocation at index %d\n", pid,
-              si->name, idx);
-        if(sym != 0) {
-            sym_name = (char *)(strtab + symtab[sym].st_name);
-            s = _do_lookup(si, sym_name, &base);
-            if(s == 0) {
-                DL_ERR("%5d cannot locate '%s'...", pid, sym_name);
-                return -1;
-            }
-#if 0
-            if((base == 0) && (si->base != 0)){
-                    /* linking from libraries to main image is bad */
-                DL_ERR("%5d cannot locate '%s'...",
-                       pid, strtab + symtab[sym].st_name);
-                return -1;
-            }
-#endif
-            if ((s->st_shndx == SHN_UNDEF) && (s->st_value != 0)) {
-                DL_ERR("%5d In '%s', shndx=%d && value=0x%08x. We do not "
-                      "handle this yet", pid, si->name, s->st_shndx,
-                      s->st_value);
-                return -1;
-            }
-            sym_addr = (unsigned)(s->st_value + base);
-            COUNT_RELOC(RELOC_SYMBOL);
-        } else {
-            s = 0;
-        }
-
-/* TODO: This is ugly. Split up the relocations by arch into
- * different files.
- */
-        switch(type){
-        case R_SH_JUMP_SLOT:
-            COUNT_RELOC(RELOC_ABSOLUTE);
-            MARK(rela->r_offset);
-            TRACE_TYPE(RELO, "%5d RELO JMP_SLOT %08x <- %08x %s\n", pid,
-                       reloc, sym_addr, sym_name);
-            *((unsigned*)reloc) = sym_addr;
-            break;
-        case R_SH_GLOB_DAT:
-            COUNT_RELOC(RELOC_ABSOLUTE);
-            MARK(rela->r_offset);
-            TRACE_TYPE(RELO, "%5d RELO GLOB_DAT %08x <- %08x %s\n", pid,
-                       reloc, sym_addr, sym_name);
-            *((unsigned*)reloc) = sym_addr;
-            break;
-        case R_SH_DIR32:
-            COUNT_RELOC(RELOC_ABSOLUTE);
-            MARK(rela->r_offset);
-            TRACE_TYPE(RELO, "%5d RELO DIR32 %08x <- %08x %s\n", pid,
-                       reloc, sym_addr, sym_name);
-            *((unsigned*)reloc) += sym_addr;
-            break;
-        case R_SH_RELATIVE:
-            COUNT_RELOC(RELOC_RELATIVE);
-            MARK(rela->r_offset);
-            if(sym){
-                DL_ERR("%5d odd RELATIVE form...", pid);
-                return -1;
-            }
-            TRACE_TYPE(RELO, "%5d RELO RELATIVE %08x <- +%08x\n", pid,
-                       reloc, si->base);
-            *((unsigned*)reloc) += si->base;
-            break;
-
-        default:
-            DL_ERR("%5d unknown reloc type %d @ %p (%d)",
-                  pid, type, rela, (int) (rela - start));
-            return -1;
-        }
-        rela++;
-    }
-    return 0;
-}
-#endif /* ANDROID_SH_LINKER */
-
-
 /* Please read the "Initialization and Termination functions" functions.
  * of the linker design note in bionic/linker/README.TXT to understand
  * what the following code is doing.
@@ -1808,40 +1713,24 @@ static int link_image(soinfo *si, unsigned wr_offset)
         case DT_SYMTAB:
             si->symtab = (Elf32_Sym *) (si->base + *d);
             break;
-#if !defined(ANDROID_SH_LINKER)
         case DT_PLTREL:
             if(*d != DT_REL) {
                 DL_ERR("DT_RELA not supported");
                 goto fail;
             }
             break;
-#endif
-#ifdef ANDROID_SH_LINKER
-        case DT_JMPREL:
-            si->plt_rela = (Elf32_Rela*) (si->base + *d);
-            break;
-        case DT_PLTRELSZ:
-            si->plt_rela_count = *d / sizeof(Elf32_Rela);
-            break;
-#else
         case DT_JMPREL:
             si->plt_rel = (Elf32_Rel*) (si->base + *d);
             break;
         case DT_PLTRELSZ:
             si->plt_rel_count = *d / 8;
             break;
-#endif
         case DT_REL:
             si->rel = (Elf32_Rel*) (si->base + *d);
             break;
         case DT_RELSZ:
             si->rel_count = *d / 8;
             break;
-#ifdef ANDROID_SH_LINKER
-        case DT_RELASZ:
-            si->rela_count = *d / sizeof(Elf32_Rela);
-             break;
-#endif
         case DT_PLTGOT:
             /* Save this in case we decide to do lazy binding. We don't yet. */
             si->plt_got = (unsigned *)(si->base + *d);
@@ -1850,15 +1739,9 @@ static int link_image(soinfo *si, unsigned wr_offset)
             // Set the DT_DEBUG entry to the addres of _r_debug for GDB
             *d = (int) &_r_debug;
             break;
-#ifdef ANDROID_SH_LINKER
-        case DT_RELA:
-            si->rela = (Elf32_Rela *) (si->base + *d);
-            break;
-#else
          case DT_RELA:
             DL_ERR("%5d DT_RELA not supported", pid);
             goto fail;
-#endif
         case DT_INIT:
             si->init_func = (void (*)(void))(si->base + *d);
             DEBUG("%5d %s constructors (init func) found at %p\n",
@@ -1963,19 +1846,6 @@ static int link_image(soinfo *si, unsigned wr_offset)
             goto fail;
     }
 
-#ifdef ANDROID_SH_LINKER
-    if(si->plt_rela) {
-        DEBUG("[ %5d relocating %s plt ]\n", pid, si->name );
-        if(reloc_library_a(si, si->plt_rela, si->plt_rela_count))
-            goto fail;
-    }
-    if(si->rela) {
-        DEBUG("[ %5d relocating %s ]\n", pid, si->name );
-        if(reloc_library_a(si, si->rela, si->rela_count))
-            goto fail;
-    }
-#endif /* ANDROID_SH_LINKER */
-
     si->flags |= FLAG_LINKED;
     DEBUG("[ %5d finished linking %s ]\n", pid, si->name);
 
diff --git a/linker/linker.h b/linker/linker.h
index 7b1ba51..d29484c 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -121,14 +121,6 @@ struct soinfo
     Elf32_Rel *rel;
     unsigned rel_count;
 
-#ifdef ANDROID_SH_LINKER
-    Elf32_Rela *plt_rela;
-    unsigned plt_rela_count;
-
-    Elf32_Rela *rela;
-    unsigned rela_count;
-#endif /* ANDROID_SH_LINKER */
-
     unsigned *preinit_array;
     unsigned preinit_array_count;
 
@@ -175,15 +167,7 @@ extern soinfo libdl_info;
 #define R_386_JUMP_SLOT  7
 #define R_386_RELATIVE   8
 
-#elif defined(ANDROID_SH_LINKER)
-
-#define R_SH_DIR32      1
-#define R_SH_GLOB_DAT   163
-#define R_SH_JUMP_SLOT  164
-#define R_SH_RELATIVE   165
-
-#endif /* ANDROID_*_LINKER */
-
+#endif
 
 #ifndef DT_INIT_ARRAY
 #define DT_INIT_ARRAY      25
@@ -220,7 +204,7 @@ const char *linker_get_error(void);
 #ifdef ANDROID_ARM_LINKER 
 typedef long unsigned int *_Unwind_Ptr;
 _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int *pcount);
-#elif defined(ANDROID_X86_LINKER) || defined(ANDROID_SH_LINKER)
+#elif defined(ANDROID_X86_LINKER)
 int dl_iterate_phdr(int (*cb)(struct dl_phdr_info *, size_t, void *), void *);
 #endif