diff options
Diffstat (limited to 'toolchain/uClibc/patches/407-ldso-avr32-2.patch')
| -rw-r--r-- | toolchain/uClibc/patches/407-ldso-avr32-2.patch | 526 |
1 files changed, 0 insertions, 526 deletions
diff --git a/toolchain/uClibc/patches/407-ldso-avr32-2.patch b/toolchain/uClibc/patches/407-ldso-avr32-2.patch deleted file mode 100644 index ddeb84d069..0000000000 --- a/toolchain/uClibc/patches/407-ldso-avr32-2.patch +++ /dev/null @@ -1,526 +0,0 @@ -Subject: [PATCH] ldso: AVR32 support - -This implements the AVR32-specific parts of the dynamic linker. - ---- - - ldso/ldso/avr32/dl-debug.h | 45 +++++++++ - ldso/ldso/avr32/dl-startup.h | 110 ++++++++++++++++++++++++ - ldso/ldso/avr32/dl-syscalls.h | 5 + - ldso/ldso/avr32/dl-sysdep.h | 103 ++++++++++++++++++++++ - ldso/ldso/avr32/elfinterp.c | 191 ++++++++++++++++++++++++++++++++++++++++++ - ldso/ldso/avr32/resolve.S | 28 ++++++ - 6 files changed, 482 insertions(+) - -Index: uClibc-0.9.28/ldso/ldso/avr32/dl-debug.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/dl-debug.h 2006-05-05 09:30:43.000000000 +0200 -@@ -0,0 +1,45 @@ -+/* -+ * AVR32 ELF shared libary loader support -+ * -+ * Copyright (C) 2005 Atmel Norway -+ * All rights reserved. -+ * -+ * Redistribution and use in source and binary forms, with or without -+ * modification, are permitted provided that the following conditions -+ * are met: -+ * 1. Redistributions of source code must retain the above copyright -+ * notice, this list of conditions and the following disclaimer. -+ * 2. The name of the above contributors may not be -+ * used to endorse or promote products derived from this software -+ * without specific prior written permission. -+ * -+ * THIS SOFTWARE IS PROVIDED BY THE 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 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. -+ */ -+ -+static const char *_dl_reltypes_tab[] = { -+ "R_AVR32_NONE", -+ "R_AVR32_32", "R_AVR32_16", "R_AVR32_8", -+ "R_AVR32_32_PCREL", "R_AVR32_16_PCREL", "R_AVR32_8_PCREL", -+ "R_AVR32_DIFF32", "R_AVR32_DIFF16", "R_AVR32_DIFF8", -+ "R_AVR32_GOT32", "R_AVR32_GOT16", "R_AVR32_GOT8", -+ "R_AVR32_21S", "R_AVR32_16U", "R_AVR32_16S", "R_AVR32_8S", "R_AVR32_8S_EXT", -+ "R_AVR32_22H_PCREL", "R_AVR32_18W_PCREL", "R_AVR32_16B_PCREL", -+ "R_AVR32_16N_PCREL", "R_AVR32_14UW_PCREL", "R_AVR32_11H_PCREL", -+ "R_AVR32_10UW_PCREL", "R_AVR32_9H_PCREL", "R_AVR32_9UW_PCREL", -+ "R_AVR32_HI16", "R_AVR32_LO16", -+ "R_AVR32_GOTPC", "R_AVR32_GOTCALL", "R_AVR32_LDA_GOT", -+ "R_AVR32_GOT21S", "R_AVR32_GOT18SW", "R_AVR32_GOT16S", "R_AVR32_GOT7UW", -+ "R_AVR32_32_CPENT", "R_AVR32_CPCALL", "R_AVR32_16_CP", "R_AVR32_9W_CP", -+ "R_AVR32_RELATIVE", "R_AVR32_GLOB_DAT", "R_AVR32_JMP_SLOT", -+ "R_AVR32_ALIGN", -+}; -Index: uClibc-0.9.28/ldso/ldso/avr32/dl-startup.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/dl-startup.h 2006-05-05 09:29:45.000000000 +0200 -@@ -0,0 +1,110 @@ -+/* vi: set sw=4 ts=4: */ -+/* -+ * Architecture specific code used by dl-startup.c -+ * Copyright (C) 2005 Atmel Norway -+ */ -+ -+/* This is the library loader's main entry point. Let _dl_boot2 do its -+ * initializations and jump to the application's entry point -+ * afterwards. */ -+asm( " .text\n" -+ " .global _start\n" -+ " .type _start,@function\n" -+ "_start:\n" -+ /* All arguments are on the stack initially */ -+ " mov r12, sp\n" -+ " rcall _dl_start\n" -+ /* Returns user entry point in r12. Save it. */ -+ " mov r0, r12\n" -+ /* We're PIC, so get the Global Offset Table */ -+ " lddpc r6, .L_GOT\n" -+ ".L_RGOT:\n" -+ " rsub r6, pc\n" -+ /* Adjust argc and argv according to _dl_skip_args */ -+ " ld.w r1, r6[_dl_skip_args@got]\n" -+ " ld.w r1, r1[0]\n" -+ " ld.w r2, sp++\n" -+ " sub r2, r1\n" -+ " add sp, sp, r1 << 2\n" -+ " st.w --sp, r2\n" -+ /* Load the finalizer function */ -+ " ld.w r12, r6[_dl_fini@got]\n" -+ /* Jump to the user's entry point */ -+ " mov pc, r0\n\n" -+ -+ " .align 2\n" -+ ".L_GOT:" -+ " .long .L_RGOT - _GLOBAL_OFFSET_TABLE_\n" -+ " .size _start, . - _start\n" -+ " .previous\n"); -+ -+/* Get a pointer to the argv array. On many platforms this can be just -+ * the address if the first argument, on other platforms we need to -+ * do something a little more subtle here. */ -+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *)ARGS + 1) -+ -+ -+/* We can't call functions before the GOT has been initialized */ -+#define NO_FUNCS_BEFORE_BOOTSTRAP -+ -+/* -+ * Relocate the GOT during dynamic loader bootstrap. This will add -+ * the load address to all entries in the GOT, which is necessary -+ * because the linker doesn't generate R_AVR32_RELATIVE relocs for the -+ * GOT. -+ */ -+static __always_inline -+void PERFORM_BOOTSTRAP_GOT(struct elf_resolve *tpnt) -+{ -+ Elf32_Addr i, nr_got; -+ register Elf32_Addr *__r6 __asm__("r6"); -+ Elf32_Addr *got = __r6; -+ -+ nr_got = tpnt->dynamic_info[DT_AVR32_GOTSZ_IDX] / sizeof(*got); -+ for (i = 2; i < nr_got; i++) -+ got[i] += tpnt->loadaddr; -+} -+ -+#define PERFORM_BOOTSTRAP_GOT(tpnt) PERFORM_BOOTSTRAP_GOT(tpnt) -+ -+/* Handle relocation of the symbols in the dynamic loader. */ -+static __always_inline -+void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr, -+ unsigned long symbol_addr, -+ unsigned long load_addr, Elf32_Sym *symtab) -+{ -+ switch(ELF32_R_TYPE(rpnt->r_info)) { -+ case R_AVR32_NONE: -+ break; -+ case R_AVR32_GLOB_DAT: -+ case R_AVR32_JMP_SLOT: -+ *reloc_addr = symbol_addr; -+ break; -+ case R_AVR32_RELATIVE: -+ SEND_STDERR_DEBUG("Applying RELATIVE relocation: "); -+ SEND_ADDRESS_STDERR_DEBUG(load_addr, 0); -+ SEND_STDERR_DEBUG(" + "); -+ SEND_ADDRESS_STDERR_DEBUG(rpnt->r_addend, 1); -+ *reloc_addr = load_addr + rpnt->r_addend; -+ break; -+ default: -+ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc_type "); -+ SEND_NUMBER_STDERR(ELF32_R_TYPE(rpnt->r_info), 1); -+ SEND_STDERR("REL, SYMBOL, LOAD: "); -+ SEND_ADDRESS_STDERR(reloc_addr, 0); -+ SEND_STDERR(", "); -+ SEND_ADDRESS_STDERR(symbol_addr, 0); -+ SEND_STDERR(", "); -+ SEND_ADDRESS_STDERR(load_addr, 1); -+ _dl_exit(1); -+ } -+} -+ -+/* Transfer control to the user's application, once the dynamic loader -+ * is done. This routine has to exit the current function, then call -+ * the _dl_elf_main function. -+ * -+ * Since our _dl_boot will simply call whatever is returned by -+ * _dl_boot2, we can just return the address we're supposed to -+ * call. */ -+#define START() return _dl_elf_main; -Index: uClibc-0.9.28/ldso/ldso/avr32/dl-syscalls.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/dl-syscalls.h 2006-05-05 09:29:25.000000000 +0200 -@@ -0,0 +1,5 @@ -+/* We can't use the real errno in ldso, since it has not yet -+ * been dynamicly linked in yet. */ -+extern int _dl_errno; -+#define __set_errno(X) {(_dl_errno) = (X);} -+#include "sys/syscall.h" -Index: uClibc-0.9.28/ldso/ldso/avr32/dl-sysdep.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/dl-sysdep.h 2006-05-05 09:30:43.000000000 +0200 -@@ -0,0 +1,103 @@ -+/* vi: set sw=4 ts=4: */ -+/* -+ * Various assembly language/system dependent hacks that are required -+ * so that we can minimize the amount of platform specific code. -+ * Copyright (C) 2004-2005 Atmel Norway -+ */ -+ -+/* Define this if the system uses RELOCA. */ -+#define ELF_USES_RELOCA -+ -+#include <elf.h> -+ -+#define ARCH_NUM 1 -+#define DT_AVR32_GOTSZ_IDX (DT_NUM + OS_NUM) -+ -+#define ARCH_DYNAMIC_INFO(dpnt, dynamic, debug_addr) \ -+ do { \ -+ if (dpnt->d_tag == DT_AVR32_GOTSZ) \ -+ dynamic[DT_AVR32_GOTSZ_IDX] = dpnt->d_un.d_val; \ -+ } while (0) -+ -+/* Initialization sequence for the application/library GOT. */ -+#define INIT_GOT(GOT_BASE,MODULE) \ -+ do { \ -+ unsigned long i, nr_got; \ -+ \ -+ GOT_BASE[0] = (unsigned long) _dl_linux_resolve; \ -+ GOT_BASE[1] = (unsigned long) MODULE; \ -+ \ -+ /* Add load address displacement to all GOT entries */ \ -+ nr_got = MODULE->dynamic_info[DT_AVR32_GOTSZ_IDX] / 4; \ -+ for (i = 2; i < nr_got; i++) \ -+ GOT_BASE[i] += (unsigned long)MODULE->loadaddr; \ -+ } while (0) -+ -+#define do_rem(result, n, base) ((result) = (n) % (base)) -+ -+/* Here we define the magic numbers that this dynamic loader should accept */ -+#define MAGIC1 EM_AVR32 -+#undef MAGIC2 -+ -+/* Used for error messages */ -+#define ELF_TARGET "AVR32" -+ -+unsigned long _dl_linux_resolver(unsigned long got_offset, unsigned long *got); -+ -+/* 4096 bytes alignment */ -+#define PAGE_ALIGN 0xfffff000 -+#define ADDR_ALIGN 0xfff -+#define OFFS_ALIGN 0x7ffff000 -+ -+#define elf_machine_type_class(type) \ -+ ((type == R_AVR32_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) -+ -+/* AVR32 doesn't need any COPY relocs */ -+#define DL_NO_COPY_RELOCS -+ -+/* Return the link-time address of _DYNAMIC. Conveniently, this is the -+ first element of the GOT. This must be inlined in a function which -+ uses global data. */ -+static inline Elf32_Addr -+elf_machine_dynamic (void) -+{ -+ register Elf32_Addr *got asm ("r6"); -+ return *got; -+} -+ -+/* Return the run-time load address of the shared object. */ -+static inline Elf32_Addr -+elf_machine_load_address (void) -+{ -+ extern void __dl_start asm("_dl_start"); -+ Elf32_Addr got_addr = (Elf32_Addr) &__dl_start; -+ Elf32_Addr pcrel_addr; -+ -+ asm (" lddpc %0, 2f\n" -+ "1: add %0, pc\n" -+ " rjmp 3f\n" -+ " .align 2\n" -+ "2: .long _dl_start - 1b\n" -+ "3:\n" -+ : "=r"(pcrel_addr) : : "cc"); -+ -+ return pcrel_addr - got_addr; -+} -+ -+/* -+ * Perform any RELATIVE relocations specified by DT_RELCOUNT. -+ * Currently, we don't use that tag, but we might in the future as -+ * this would reduce the startup time somewhat (although probably not by much). -+ */ -+static inline void -+elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr, -+ Elf32_Word relative_count) -+{ -+ Elf32_Rela *rpnt = (void *)rel_addr; -+ -+ do { -+ Elf32_Addr *reloc_addr; -+ reloc_addr = (void *)(load_off + (rpnt++)->r_offset); -+ *reloc_addr = load_off + rpnt->r_addend; -+ } while (--relative_count); -+} -Index: uClibc-0.9.28/ldso/ldso/avr32/elfinterp.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/elfinterp.c 2006-05-05 09:30:43.000000000 +0200 -@@ -0,0 +1,191 @@ -+/* -+ * AVR32 ELF shared library loader suppport -+ * -+ * Copyright (C) 2004-2006 Atmel Corporation -+ * -+ * All rights reserved. -+ * -+ * Redistribution and use in source and binary forms, with or without -+ * modification, are permitted provided that the following conditions -+ * are met: -+ * 1. Redistributions of source code must retain the above copyright -+ * notice, this list of conditions and the following disclaimer. -+ * 2. The name of the above contributors may not be -+ * used to endorse or promote products derived from this software -+ * without specific prior written permission. -+ * -+ * THIS SOFTWARE IS PROVIDED BY THE 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 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. -+ */ -+ -+unsigned long _dl_linux_resolver(unsigned long got_offset, unsigned long *got) -+{ -+ struct elf_resolve *tpnt = (struct elf_resolve *)got[1]; -+ Elf32_Sym *sym; -+ unsigned long local_gotno; -+ unsigned long gotsym; -+ unsigned long new_addr; -+ char *strtab, *symname; -+ unsigned long *entry; -+ unsigned long sym_index = got_offset / 4; -+ -+#if 0 -+ local_gotno = tpnt->dynamic_info[DT_AVR32_LOCAL_GOTNO]; -+ gotsym = tpnt->dynamic_info[DT_AVR32_GOTSYM]; -+ -+ sym = ((Elf32_Sym *)(tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr)) -+ + sym_index; -+ strtab = (char *)(tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr); -+ symname = strtab + sym->st_name; -+ -+#if 0 -+ new_addr = (unsigned long) _dl_find_hash(strtab + sym->st_name, -+ tpnt->symbol_scope, tpnt, -+ resolver); -+#endif -+ -+ entry = (unsigned long *)(got + local_gotno + sym_index - gotsym); -+ *entry = new_addr; -+#endif -+ -+ return new_addr; -+} -+ -+static int -+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope, -+ unsigned long rel_addr, unsigned long rel_size, -+ int (*reloc_func)(struct elf_resolve *tpnt, struct dyn_elf *scope, -+ Elf32_Rela *rpnt, Elf32_Sym *symtab, char *strtab)) -+{ -+ Elf32_Sym *symtab; -+ Elf32_Rela *rpnt; -+ char *strtab; -+ int i; -+ -+ rpnt = (Elf32_Rela *)rel_addr; -+ rel_size /= sizeof(Elf32_Rela); -+ symtab = (Elf32_Sym *)tpnt->dynamic_info[DT_SYMTAB]; -+ strtab = (char *)tpnt->dynamic_info[DT_STRTAB]; -+ -+ for (i = 0; i < rel_size; i++, rpnt++) { -+ int symtab_index, res; -+ -+ symtab_index = ELF32_R_SYM(rpnt->r_info); -+ -+ debug_sym(symtab, strtab, symtab_index); -+ debug_reloc(symtab, strtab, rpnt); -+ -+ res = reloc_func(tpnt, scope, rpnt, symtab, strtab); -+ -+ if (res == 0) -+ continue; -+ -+ _dl_dprintf(2, "\n%s: ", _dl_progname); -+ -+ if (symtab_index) -+ _dl_dprintf(2, "symbol '%s': ", -+ strtab + symtab[symtab_index].st_name); -+ -+ if (res < 0) { -+ int reloc_type = ELF32_R_TYPE(rpnt->r_info); -+#if defined(__SUPPORT_LD_DEBUG__) -+ _dl_dprintf(2, "can't handle reloc type %s\n", -+ _dl_reltypes(reloc_type)); -+#else -+ _dl_dprintf(2, "can't handle reloc type %x\n", -+ reloc_type); -+#endif -+ _dl_exit(-res); -+ } else { -+ _dl_dprintf(2, "can't resolve symbol\n"); -+ return res; -+ } -+ } -+ -+ return 0; -+} -+ -+static int _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope, -+ Elf32_Rela *rpnt, Elf32_Sym *symtab, char *strtab) -+{ -+ int reloc_type; -+ int symtab_index; -+ char *symname; -+ unsigned long *reloc_addr; -+ unsigned long symbol_addr; -+#if defined(__SUPPORT_LD_DEBUG__) -+ unsigned long old_val; -+#endif -+ -+ reloc_addr = (unsigned long *)(tpnt->loadaddr + rpnt->r_offset); -+ reloc_type = ELF32_R_TYPE(rpnt->r_info); -+ symtab_index = ELF32_R_SYM(rpnt->r_info); -+ symbol_addr = 0; -+ symname = strtab + symtab[symtab_index].st_name; -+ -+ if (symtab_index) { -+ symbol_addr = (unsigned long) -+ _dl_find_hash(strtab + symtab[symtab_index].st_name, -+ tpnt->symbol_scope, tpnt, -+ elf_machine_type_class(reloc_type)); -+ -+ /* Allow undefined references to weak symbols */ -+ if (!symbol_addr && -+ ELF32_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK) { -+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n", -+ _dl_progname, symname); -+ return 0; -+ } -+ } -+ -+#if defined(__SUPPORT_LD_DEBUG__) -+ old_val = *reloc_addr; -+#endif -+ switch (reloc_type) { -+ case R_AVR32_NONE: -+ break; -+ case R_AVR32_GLOB_DAT: -+ case R_AVR32_JMP_SLOT: -+ *reloc_addr = symbol_addr + rpnt->r_addend; -+ break; -+ case R_AVR32_RELATIVE: -+ *reloc_addr = (unsigned long)tpnt->loadaddr -+ + rpnt->r_addend; -+ break; -+ default: -+ return -1; -+ } -+ -+#if defined(__SUPPORT_LD_DEBUG__) -+ if (_dl_debug_reloc && _dl_debug_detail) -+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x\n", -+ old_val, *reloc_addr); -+#endif -+ -+ return 0; -+} -+ -+void _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt, -+ unsigned long rel_addr, -+ unsigned long rel_size) -+{ -+ /* TODO: Might want to support this in order to get faster -+ * startup times... */ -+} -+ -+int _dl_parse_relocation_information(struct dyn_elf *rpnt, -+ unsigned long rel_addr, -+ unsigned long rel_size) -+{ -+ return _dl_parse(rpnt->dyn, rpnt->dyn->symbol_scope, rel_addr, rel_size, -+ _dl_do_reloc); -+} -Index: uClibc-0.9.28/ldso/ldso/avr32/resolve.S -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ uClibc-0.9.28/ldso/ldso/avr32/resolve.S 2006-05-05 09:29:25.000000000 +0200 -@@ -0,0 +1,28 @@ -+/* -+ * Linux dynamic resolving code for AVR32. Fixes up the GOT entry as -+ * indicated in register r12 and jumps to the resolved address. -+ * -+ * This file is subject to the terms and conditions of the GNU Lesser General -+ * Public License. See the file "COPYING.LIB" in the main directory of this -+ * archive for more details. -+ * -+ * Copyright (C) 2004 Atmel Norway -+ */ -+ -+#define ip r5 -+ -+ .text -+ .global _dl_linux_resolve -+ .type _dl_linux_resolve,@function -+_dl_linux_resolve: -+ /* The PLT code pushed r8 for us. It contains the address of this -+ function's GOT entry, that is entry 0. ip contains the address -+ of the GOT entry of the function we wanted to call. */ -+ stm --sp, r9-r12, lr -+ mov r11, r8 -+ sub r12, ip, r8 -+ rcall _dl_linux_resolver -+ mov ip, r12 -+ popm r8-r12,lr -+ mov pc, ip -+ .size _dl_linux_resolve, . - _dl_linux_resolve |