ARM and ARMv7-M ELF support; STM32F4Discovery ELF loader test configuration
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5264 42af7a65-404d-4744-a932-0658087f49c3
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arch/arm/src/arm/up_elf.c
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256
arch/arm/src/arm/up_elf.c
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@ -0,0 +1,256 @@
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/****************************************************************************
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* arch/arm/src/arm/up_elf.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* 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. 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.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* 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.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <elf32.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/elf.h>
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#include <nuttx/arch.h>
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#include <nuttx/binfmt/elf.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arch_checkarch
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*
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* Description:
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* Given the ELF header in 'hdr', verify that the ELF file is appropriate
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* for the current, configured architecture. Every architecture that uses
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* the ELF loader must provide this function.
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*
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* Input Parameters:
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* hdr - The ELF header read from the ELF file.
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*
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* Returned Value:
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* True if the architecture supports this ELF file.
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*
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****************************************************************************/
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bool arch_checkarch(FAR const Elf32_Ehdr *ehdr)
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{
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/* Make sure it's an ARM executable */
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if (ehdr->e_machine != EM_ARM)
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{
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bdbg("Not for ARM: e_machine=%04x\n", ehdr->e_machine);
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return -ENOEXEC;
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}
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/* Make sure that 32-bit objects are supported */
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if (ehdr->e_ident[EI_CLASS] != ELFCLASS32)
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{
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bdbg("Need 32-bit objects: e_ident[EI_CLASS]=%02x\n", ehdr->e_ident[EI_CLASS]);
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return -ENOEXEC;
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}
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/* Verify endian-ness */
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#ifdef CONFIG_ENDIAN_BIG
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if (ehdr->e_ident[EI_DATA] != ELFDATA2MSB)
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#else
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if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB)
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#endif
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{
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bdbg("Wrong endian-ness: e_ident[EI_DATA]=%02x\n", ehdr->e_ident[EI_DATA]);
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return -ENOEXEC;
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}
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/* Make sure the entry point address is properly aligned */
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if ((ehdr->e_entry & 3) != 0)
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{
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bdbg("Entry point is not properly aligned: %08x\n", ehdr->e_entry);
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return -ENOEXEC
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}
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/* TODO: Check ABI here. */
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return OK;
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}
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/****************************************************************************
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* Name: arch_relocate and arch_relocateadd
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*
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* Description:
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* Perform on architecture-specific ELF relocation. Every architecture
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* that uses the ELF loader must provide this function.
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*
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* Input Parameters:
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* rel - The relocation type
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* sym - The ELF symbol structure containing the fully resolved value.
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* addr - The address that requires the relocation.
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*
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* Returned Value:
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* Zero (OK) if the relocation was successful. Otherwise, a negated errno
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* value indicating the cause of the relocation failure.
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*
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****************************************************************************/
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int arch_relocate(FAR const Elf32_Rel *rel, FAR const Elf32_Sym *sym,
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uintptr_t addr)
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{
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int32_t offset;
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switch (ELF32_R_TYPE(rel->r_info))
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{
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case R_ARM_NONE:
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{
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/* No relocation */
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}
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break;
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case R_ARM_PC24:
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case R_ARM_CALL:
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case R_ARM_JUMP24:
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{
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bvdbg("Performing PC24 [%d] link at addr %08lx [%08lx] to sym '%s' st_value=%08lx\n",
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ELF32_R_TYPE(rel->r_info), (long)addr, (long)(*(uint32_t*)addr),
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sym, (long)sym->st_value);
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offset = (*(uint32_t*)addr & 0x00ffffff) << 2;
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if (offset & 0x02000000)
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{
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offset -= 0x04000000;
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}
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offset += sym->st_value - addr;
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if (offset & 3 || offset <= (int32_t) 0xfe000000 || offset >= (int32_t) 0x02000000)
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{
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bdbg(" ERROR: PC24 [%d] relocation out of range, offset=%08lx\n",
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ELF32_R_TYPE(rel->r_info), offset);
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return -EINVAL;
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}
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offset >>= 2;
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*(uint32_t*)addr &= 0xff000000;
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*(uint32_t*)addr |= offset & 0x00ffffff;
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}
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break;
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case R_ARM_ABS32:
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{
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bvdbg("Performing ABS32 link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
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(long)addr, (long)(*(uint32_t*)addr), sym, (long)sym->st_value);
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*(uint32_t*)addr += sym->st_value;
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}
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break;
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case R_ARM_V4BX:
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{
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bvdbg("Performing V4BX link at addr=%08lx [%08lx]\n",
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(long)addr, (long)(*(uint32_t*)addr));
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/* Preserve only Rm and the condition code */
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*(uint32_t*)addr &= 0xf000000f;
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/* Change instruction to 'mov pc, Rm' */
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*(uint32_t*)addr |= 0x01a0f000;
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}
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break;
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case R_ARM_PREL31:
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{
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bvdbg("Performing PREL31 link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
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(long)addr, (long)(*(uint32_t*)addr), sym, (long)sym->st_value);
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offset = *(uint32_t*)addr + sym->st_value - addr;
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*(uint32_t*)addr = offset & 0x7fffffff;
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}
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break;
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case R_ARM_MOVW_ABS_NC:
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case R_ARM_MOVT_ABS:
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{
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bvdbg("Performing MOVx_ABS [%d] link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
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ELF32_R_TYPE(rel->r_info), (long)addr, (long)(*(uint32_t*)addr),
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sym, (long)sym->st_value);
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offset = *(uint32_t*)addr;
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offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
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offset = (offset ^ 0x8000) - 0x8000;
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offset += sym->st_value;
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if (ELF32_R_TYPE(rel->r_info) == R_ARM_MOVT_ABS)
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{
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offset >>= 16;
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}
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*(uint32_t*)addr &= 0xfff0f000;
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*(uint32_t*)addr |= ((offset & 0xf000) << 4) | (offset & 0x0fff);
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}
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break;
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default:
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bdbg("Unsupported relocation: %d\n", ELF32_R_TYPE(rel->r_info));
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return -EINVAL;
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}
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return OK;
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}
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int arch_relocateadd(FAR const Elf32_Rela *rel, FAR const Elf32_Sym *sym,
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uintptr_t addr)
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{
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bdbg("RELA relocation not supported\n");
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return -ENOSYS;
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}
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448
arch/arm/src/armv7-m/up_elf.c
Normal file
448
arch/arm/src/armv7-m/up_elf.c
Normal file
@ -0,0 +1,448 @@
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/****************************************************************************
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* arch/arm/src/armv7-m/up_elf.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* 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. 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.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* 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
|
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <elf32.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/elf.h>
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#include <nuttx/arch.h>
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#include <nuttx/binfmt/elf.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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||||
****************************************************************************/
|
||||
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/****************************************************************************
|
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arch_checkarch
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*
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* Description:
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* Given the ELF header in 'hdr', verify that the ELF file is appropriate
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* for the current, configured architecture. Every architecture that uses
|
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* the ELF loader must provide this function.
|
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*
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* Input Parameters:
|
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* hdr - The ELF header read from the ELF file.
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*
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* Returned Value:
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* True if the architecture supports this ELF file.
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*
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****************************************************************************/
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bool arch_checkarch(FAR const Elf32_Ehdr *ehdr)
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{
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/* Make sure it's an ARM executable */
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if (ehdr->e_machine != EM_ARM)
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{
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bdbg("Not for ARM: e_machine=%04x\n", ehdr->e_machine);
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return -ENOEXEC;
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}
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/* Make sure that 32-bit objects are supported */
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if (ehdr->e_ident[EI_CLASS] != ELFCLASS32)
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{
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bdbg("Need 32-bit objects: e_ident[EI_CLASS]=%02x\n", ehdr->e_ident[EI_CLASS]);
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return -ENOEXEC;
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}
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/* Verify endian-ness */
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#ifdef CONFIG_ENDIAN_BIG
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if (ehdr->e_ident[EI_DATA] != ELFDATA2MSB)
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#else
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if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB)
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#endif
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{
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bdbg("Wrong endian-ness: e_ident[EI_DATA]=%02x\n", ehdr->e_ident[EI_DATA]);
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return -ENOEXEC;
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}
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/* TODO: Check ABI here. */
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return OK;
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}
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/****************************************************************************
|
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* Name: arch_relocate and arch_relocateadd
|
||||
*
|
||||
* Description:
|
||||
* Perform on architecture-specific ELF relocation. Every architecture
|
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* that uses the ELF loader must provide this function.
|
||||
*
|
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* Input Parameters:
|
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* rel - The relocation type
|
||||
* sym - The ELF symbol structure containing the fully resolved value.
|
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* addr - The address that requires the relocation.
|
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*
|
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* Returned Value:
|
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* Zero (OK) if the relocation was successful. Otherwise, a negated errno
|
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* value indicating the cause of the relocation failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
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int arch_relocate(FAR const Elf32_Rel *rel, FAR const Elf32_Sym *sym,
|
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uintptr_t addr)
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{
|
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int32_t offset;
|
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uint32_t upper_insn;
|
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uint32_t lower_insn;
|
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|
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switch (ELF32_R_TYPE(rel->r_info))
|
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{
|
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case R_ARM_NONE:
|
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{
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/* No relocation */
|
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}
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break;
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case R_ARM_PC24:
|
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case R_ARM_CALL:
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case R_ARM_JUMP24:
|
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{
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bvdbg("Performing PC24 [%d] link at addr %08lx [%08lx] to sym '%s' st_value=%08lx\n",
|
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ELF32_R_TYPE(rel->r_info), (long)addr, (long)(*(uint32_t*)addr),
|
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sym, (long)sym->st_value);
|
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offset = (*(uint32_t*)addr & 0x00ffffff) << 2;
|
||||
if (offset & 0x02000000)
|
||||
{
|
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offset -= 0x04000000;
|
||||
}
|
||||
|
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offset += sym->st_value - addr;
|
||||
if (offset & 3 || offset <= (int32_t) 0xfe000000 || offset >= (int32_t) 0x02000000)
|
||||
{
|
||||
bdbg(" ERROR: PC24 [%d] relocation out of range, offset=%08lx\n",
|
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ELF32_R_TYPE(rel->r_info), offset);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
offset >>= 2;
|
||||
|
||||
*(uint32_t*)addr &= 0xff000000;
|
||||
*(uint32_t*)addr |= offset & 0x00ffffff;
|
||||
}
|
||||
break;
|
||||
|
||||
case R_ARM_ABS32:
|
||||
{
|
||||
bvdbg("Performing ABS32 link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
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(long)addr, (long)(*(uint32_t*)addr), sym, (long)sym->st_value);
|
||||
|
||||
*(uint32_t*)addr += sym->st_value;
|
||||
}
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||||
break;
|
||||
|
||||
case R_ARM_THM_CALL:
|
||||
case R_ARM_THM_JUMP24:
|
||||
{
|
||||
uint32_t S;
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||||
uint32_t J1;
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||||
uint32_t J2;
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||||
|
||||
/* Thumb BL and B.W instructions. Encoding:
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||||
*
|
||||
* upper_insn:
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||||
*
|
||||
* 1 1 1 1 1 1
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||||
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
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||||
* +----------+---+-------------------------------+--------------+
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||||
* |1 1 1 |OP1| OP2 | | 32-Bit Instructions
|
||||
* +----------+---+--+-----+----------------------+--------------+
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||||
* |1 1 1 | 1 0| S | imm10 | BL Instruction
|
||||
* +----------+------+-----+-------------------------------------+
|
||||
*
|
||||
* lower_insn:
|
||||
*
|
||||
* 1 1 1 1 1 1
|
||||
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
|
||||
* +---+---------------------------------------------------------+
|
||||
* |OP | | 32-Bit Instructions
|
||||
* +---+--+---+---+---+------------------------------------------+
|
||||
* |1 1 |J1 | 1 |J2 | imm11 | BL Instruction
|
||||
* +------+---+---+---+------------------------------------------+
|
||||
*
|
||||
* The branch target is encoded in these bits:
|
||||
*
|
||||
* S = upper_insn[10]
|
||||
* imm10 = upper_insn[9:0]
|
||||
* imm11 = lower_insn[10:0]
|
||||
* J1 = lower_insn[13]
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||||
* J2 = lower_insn[11]
|
||||
*/
|
||||
|
||||
upper_insn = (uint32_t)(*(uint16_t*)addr);
|
||||
lower_insn = (uint32_t)(*(uint16_t*)(addr + 2));
|
||||
|
||||
bvdbg("Performing JUMP24 [%d] link at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
|
||||
ELF32_R_TYPE(rel->r_info), (long)addr, (int)upper_insn, (int)lower_insn,
|
||||
sym, (long)sym->st_value);
|
||||
|
||||
/* Extract the 25-bit offset from the 32-bit instruction:
|
||||
*
|
||||
* offset[24] = S
|
||||
* offset[23] = ~(J1 ^ S)
|
||||
* offset[22 = ~(J2 ^ S)]
|
||||
* offset[21:12] = imm10
|
||||
* offset[11:1] = imm11
|
||||
* offset[0] = 0
|
||||
*/
|
||||
|
||||
S = (upper_insn >> 10) & 1;
|
||||
J1 = (lower_insn >> 13) & 1;
|
||||
J2 = (lower_insn >> 11) & 1;
|
||||
|
||||
offset = (S << 24) |
|
||||
((~(J1 ^ S) & 1) << 23) |
|
||||
((~(J2 ^ S) & 1) << 22) |
|
||||
((upper_insn & 0x03ff) << 12) |
|
||||
((lower_insn & 0x07ff) << 1);
|
||||
|
||||
/* Sign extend */
|
||||
|
||||
if (offset & 0x01000000)
|
||||
{
|
||||
offset -= 0x02000000;
|
||||
}
|
||||
|
||||
/* And perform the relocation */
|
||||
|
||||
bvdbg(" S=%d J1=%d J2=%d offset=%08lx branch target=%08lx\n",
|
||||
S, J1, J2, (long)offset, offset + sym->st_value - addr);
|
||||
|
||||
offset += sym->st_value - addr;
|
||||
|
||||
/* Is this a function symbol? If so, then the branch target must be
|
||||
* an odd Thumb address
|
||||
*/
|
||||
|
||||
if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && (offset & 1) == 0)
|
||||
{
|
||||
bdbg(" ERROR: JUMP24 [%d] requires odd offset, offset=%08lx\n",
|
||||
ELF32_R_TYPE(rel->r_info), offset);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Check the range of the offset */
|
||||
|
||||
if (offset <= (int32_t)0xff000000 || offset >= (int32_t)0x01000000)
|
||||
{
|
||||
bdbg(" ERROR: JUMP24 [%d] relocation out of range, offset=%08lx\n",
|
||||
ELF32_R_TYPE(rel->r_info), offset);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Now, reconstruct the 32-bit instruction using the new, relocated
|
||||
* branch target.
|
||||
*/
|
||||
|
||||
S = (offset >> 24) & 1;
|
||||
J1 = S ^ (~(offset >> 23) & 1);
|
||||
J2 = S ^ (~(offset >> 22) & 1);
|
||||
|
||||
upper_insn = ((upper_insn & 0xf800) | (S << 10) | ((offset >> 12) & 0x03ff));
|
||||
*(uint16_t*)addr = (uint16_t)upper_insn;
|
||||
|
||||
lower_insn = ((lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | ((offset >> 1) & 0x07ff));
|
||||
*(uint16_t*)(addr + 2) = (uint16_t)lower_insn;
|
||||
|
||||
bvdbg(" S=%d J1=%d J2=%d insn [%04x %04x]\n",
|
||||
S, J1, J2, (int)upper_insn, (int)lower_insn);
|
||||
}
|
||||
break;
|
||||
|
||||
case R_ARM_V4BX:
|
||||
{
|
||||
bvdbg("Performing V4BX link at addr=%08lx [%08lx]\n",
|
||||
(long)addr, (long)(*(uint32_t*)addr));
|
||||
|
||||
/* Preserve only Rm and the condition code */
|
||||
|
||||
*(uint32_t*)addr &= 0xf000000f;
|
||||
|
||||
/* Change instruction to 'mov pc, Rm' */
|
||||
|
||||
*(uint32_t*)addr |= 0x01a0f000;
|
||||
}
|
||||
break;
|
||||
|
||||
case R_ARM_PREL31:
|
||||
{
|
||||
bvdbg("Performing PREL31 link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
|
||||
(long)addr, (long)(*(uint32_t*)addr), sym, (long)sym->st_value);
|
||||
|
||||
offset = *(uint32_t*)addr + sym->st_value - addr;
|
||||
*(uint32_t*)addr = offset & 0x7fffffff;
|
||||
}
|
||||
break;
|
||||
|
||||
case R_ARM_MOVW_ABS_NC:
|
||||
case R_ARM_MOVT_ABS:
|
||||
{
|
||||
bvdbg("Performing MOVx_ABS [%d] link at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
|
||||
ELF32_R_TYPE(rel->r_info), (long)addr, (long)(*(uint32_t*)addr),
|
||||
sym, (long)sym->st_value);
|
||||
|
||||
offset = *(uint32_t*)addr;
|
||||
offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
|
||||
offset = (offset ^ 0x8000) - 0x8000;
|
||||
|
||||
offset += sym->st_value;
|
||||
if (ELF32_R_TYPE(rel->r_info) == R_ARM_MOVT_ABS)
|
||||
{
|
||||
offset >>= 16;
|
||||
}
|
||||
|
||||
*(uint32_t*)addr &= 0xfff0f000;
|
||||
*(uint32_t*)addr |= ((offset & 0xf000) << 4) | (offset & 0x0fff);
|
||||
}
|
||||
break;
|
||||
|
||||
case R_ARM_THM_MOVW_ABS_NC:
|
||||
case R_ARM_THM_MOVT_ABS:
|
||||
{
|
||||
/* Thumb BL and B.W instructions. Encoding:
|
||||
*
|
||||
* upper_insn:
|
||||
*
|
||||
* 1 1 1 1 1 1
|
||||
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
|
||||
* +----------+---+-------------------------------+--------------+
|
||||
* |1 1 1 |OP1| OP2 | | 32-Bit Instructions
|
||||
* +----------+---+--+-----+----------------------+--------------+
|
||||
* |1 1 1 | 1 0| i | 1 0 1 1 0 0 | imm4 | MOVT Instruction
|
||||
* +----------+------+-----+----------------------+--------------+
|
||||
*
|
||||
* lower_insn:
|
||||
*
|
||||
* 1 1 1 1 1 1
|
||||
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
|
||||
* +---+---------------------------------------------------------+
|
||||
* |OP | | 32-Bit Instructions
|
||||
* +---+--+-------+--------------+-------------------------------+
|
||||
* |0 |1 | imm3 | Rd | imm8 | MOVT Instruction
|
||||
* +---+--+-------+--------------+-------------------------------+
|
||||
*
|
||||
* The 16-bit immediate value is encoded in these bits:
|
||||
*
|
||||
* i = imm16[11] = upper_insn[10]
|
||||
* imm4 = imm16[12:15] = upper_insn[3:0]
|
||||
* imm3 = imm16[9:11] = lower_insn[14:12]
|
||||
* imm8 = imm16[0:8] = lower_insn[7:0]
|
||||
*/
|
||||
|
||||
upper_insn = (uint32_t)(*(uint16_t*)addr);
|
||||
lower_insn = (uint32_t)(*(uint16_t*)(addr + 2));
|
||||
|
||||
bvdbg("Performing MOVx [%d] link at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
|
||||
ELF32_R_TYPE(rel->r_info), (long)addr, (int)upper_insn, (int)lower_insn,
|
||||
sym, (long)sym->st_value);
|
||||
|
||||
/* Extract the 16-bit offset from the 32-bit instruction */
|
||||
|
||||
offset = ((upper_insn & 0x000f) << 12) |
|
||||
((upper_insn & 0x0400) << 1) |
|
||||
((lower_insn & 0x7000) >> 4) |
|
||||
(lower_insn & 0x00ff);
|
||||
|
||||
/* Sign extend */
|
||||
|
||||
offset = (offset ^ 0x8000) - 0x8000;
|
||||
|
||||
/* And perform the relocation */
|
||||
|
||||
bvdbg(" S=%d J1=%d J2=%d offset=%08lx branch target=%08lx\n",
|
||||
S, J1, J2, (long)offset, offset + sym->st_value);
|
||||
|
||||
offset += sym->st_value;
|
||||
|
||||
/* Update the immediate value in the instruction. For MOVW we want the bottom
|
||||
* 16-bits; for MOVT we want the top 16-bits.
|
||||
*/
|
||||
|
||||
if (ELF32_R_TYPE(rel->r_info) == R_ARM_THM_MOVT_ABS)
|
||||
{
|
||||
offset >>= 16;
|
||||
}
|
||||
|
||||
upper_insn = ((upper_insn & 0xfbf0) | ((offset & 0xf000) >> 12) | ((offset & 0x0800) >> 1));
|
||||
*(uint16_t*)addr = (uint16_t)upper_insn;
|
||||
|
||||
lower_insn = ((lower_insn & 0x8f00) | ((offset & 0x0700) << 4) | (offset & 0x00ff));
|
||||
*(uint16_t*)(addr + 2) = (uint16_t)lower_insn;
|
||||
|
||||
bvdbg(" insn [%04x %04x]\n",
|
||||
(int)upper_insn, (int)lower_insn);
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
bdbg("Unsupported relocation: %d\n", ELF32_R_TYPE(rel->r_info));
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
int arch_relocateadd(FAR const Elf32_Rela *rel, FAR const Elf32_Sym *sym,
|
||||
uintptr_t addr)
|
||||
{
|
||||
bdbg("RELA relocation not supported\n");
|
||||
return -ENOSYS;
|
||||
}
|
||||
|
@ -44,6 +44,10 @@ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
|
||||
up_sigdeliver.c up_syscall.c up_unblocktask.c \
|
||||
up_undefinedinsn.c up_usestack.c
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = c5471_lowputc.S c5471_vectors.S
|
||||
CHIP_CSRCS = c5471_irq.c c5471_serial.c c5471_timerisr.c c5471_watchdog.c \
|
||||
c5471_ethernet.c
|
||||
|
@ -48,6 +48,10 @@ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
|
||||
up_sigdeliver.c up_syscall.c up_unblocktask.c \
|
||||
up_undefinedinsn.c up_usestack.c calypso_power.c
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = calypso_lowputc.S
|
||||
CHIP_CSRCS = calypso_irq.c calypso_timer.c calypso_heap.c \
|
||||
calypso_serial.c calypso_spi.c clock.c calypso_uwire.c
|
||||
|
@ -45,6 +45,10 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
|
||||
up_sigdeliver.c up_syscall.c up_unblocktask.c \
|
||||
up_undefinedinsn.c up_usestack.c
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = dm320_lowputc.S dm320_restart.S
|
||||
CHIP_CSRCS = dm320_allocateheap.c dm320_boot.c dm320_decodeirq.c \
|
||||
dm320_irq.c dm320_serial.c dm320_timerisr.c dm320_framebuffer.c
|
||||
|
@ -45,6 +45,10 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
|
||||
up_sigdeliver.c up_syscall.c up_unblocktask.c \
|
||||
up_undefinedinsn.c up_usestack.c
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = imx_lowputc.S
|
||||
CHIP_CSRCS = imx_boot.c imx_gpio.c imx_allocateheap.c imx_irq.c \
|
||||
imx_serial.c imx_timerisr.c imx_decodeirq.c imx_spi.c
|
||||
|
@ -58,6 +58,10 @@ CMN_CSRCS += up_etherstub.c
|
||||
endif
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
# Required Kinetis files
|
||||
|
||||
CHIP_ASRCS =
|
||||
|
@ -48,6 +48,10 @@ ifeq ($(CONFIG_ARCH_MEMCPY),y)
|
||||
CMN_ASRCS += up_memcpy.S
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS =
|
||||
CHIP_CSRCS = lm3s_start.c lm3s_syscontrol.c lm3s_irq.c \
|
||||
lm3s_gpio.c lm3s_gpioirq.c lm3s_timerisr.c lm3s_lowputc.c \
|
||||
|
@ -58,6 +58,10 @@ CMN_CSRCS += up_etherstub.c
|
||||
endif
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
# Required LPC17xx files
|
||||
|
||||
CHIP_ASRCS =
|
||||
|
@ -47,6 +47,10 @@ ifneq ($(CONFIG_DISABLE_SIGNALS),y)
|
||||
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = lpc214x_lowputc.S
|
||||
CHIP_CSRCS = lpc214x_decodeirq.c lpc214x_irq.c lpc214x_timerisr.c \
|
||||
lpc214x_serial.c
|
||||
|
@ -52,6 +52,10 @@ ifneq ($(CONFIG_DISABLE_SIGNALS),y)
|
||||
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS = lpc23xx_lowputc.S
|
||||
CHIP_CSRCS = lpc23xx_pllsetup.c lpc23xx_decodeirq.c lpc23xx_irq.c lpc23xx_timerisr.c \
|
||||
lpc23xx_serial.c lpc23xx_io.c
|
||||
|
@ -50,6 +50,10 @@ ifeq ($(CONFIG_PAGING),y)
|
||||
CMN_CSRCS += up_pginitialize.c up_checkmapping.c up_allocpage.c up_va2pte.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CGU_ASRCS =
|
||||
CGU_CSRCS = lpc31_bcrndx.c lpc31_clkdomain.c lpc31_clkexten.c \
|
||||
lpc31_clkfreq.c lpc31_clkinit.c lpc31_defclk.c \
|
||||
|
@ -57,6 +57,10 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
|
||||
CMN_CSRCS += up_checkstack.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ARCH_FPU),y)
|
||||
CMN_ASRCS += up_fpu.S
|
||||
endif
|
||||
|
@ -58,6 +58,10 @@ ifeq ($(CONFIG_NUTTX_KERNEL),y)
|
||||
CHIP_CSRCS += up_mpu.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
# Required SAM3U files
|
||||
|
||||
CHIP_ASRCS =
|
||||
|
@ -108,7 +108,7 @@ config ARCH_CHIP_STM32F407VE
|
||||
|
||||
config ARCH_CHIP_STM32F407VG
|
||||
bool "STM32F407VG"
|
||||
select ARCH_CORTEXM3
|
||||
select ARCH_CORTEXM4
|
||||
select STM32_STM32F40XX
|
||||
|
||||
config ARCH_CHIP_STM32F407ZE
|
||||
|
@ -61,6 +61,10 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
|
||||
CMN_CSRCS += up_checkstack.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ARCH_FPU),y)
|
||||
CMN_ASRCS += up_fpu.S
|
||||
endif
|
||||
|
@ -47,6 +47,10 @@ ifneq ($(CONFIG_DISABLE_SIGNALS),y)
|
||||
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_ELF),y)
|
||||
CMN_CSRCS += up_elf.c
|
||||
endif
|
||||
|
||||
CHIP_ASRCS =
|
||||
CHIP_CSRCS = str71x_prccu.c str71x_lowputc.c str71x_decodeirq.c str71x_irq.c \
|
||||
str71x_timerisr.c str71x_serial.c
|
||||
|
@ -47,8 +47,6 @@
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/binfmt/elf.h>
|
||||
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
@ -47,8 +47,6 @@
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/binfmt/elf.h>
|
||||
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
Loading…
Reference in New Issue
Block a user