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462a0c32ea
Addressed coverity issues - Untrusted loop bound (CWE 606) - Uninitialized pointer read (CWE 457) Defined Elf file max section, program numbers and size Signed-off-by: Kevin Tsai <kevin.tsai@intel.com>
147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
/** @file
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ELF library
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Copyright (c) 2018 - 2023, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __ELF_LIB_H__
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#define __ELF_LIB_H__
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#include <PiPei.h>
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#include <IndustryStandard/PeImage.h>
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#define ELF_CLASS32 1
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#define ELF_CLASS64 2
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#define ELF_PT_LOAD 1
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/*
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* Define Max value for Coverity check
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*/
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#define MAX_ELF_SHNUM 100
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#define MAX_ELF_PHNUM 50
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#define NAX_ELF_RELOC_SECT_SIZE 0x10000
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typedef struct {
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RETURN_STATUS ParseStatus; ///< Return the status after ParseElfImage().
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UINT8 *FileBase; ///< The source location in memory.
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UINTN FileSize; ///< The size including sections that don't require loading.
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UINT8 *PreferredImageAddress; ///< The preferred image to be loaded. No relocation is needed if loaded to this address.
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BOOLEAN ReloadRequired; ///< The image needs a new memory location for running.
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UINT8 *ImageAddress; ///< The destination memory address set by caller.
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UINTN ImageSize; ///< The memory size for loading and execution.
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UINT32 EiClass;
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UINT32 ShNum;
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UINT32 PhNum;
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UINTN ShStrOff;
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UINTN ShStrLen;
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UINTN EntryPoint; ///< Return the actual entry point after LoadElfImage().
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} ELF_IMAGE_CONTEXT;
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typedef struct {
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UINT32 PtType;
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UINTN Offset;
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UINTN Length;
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UINTN MemLen;
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UINTN MemAddr;
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UINTN Alignment;
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} SEGMENT_INFO;
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/**
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Check if the ELF image is valid.
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@param[in] ImageBase Memory address of an image.
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@retval TRUE if valid.
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**/
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BOOLEAN
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EFIAPI
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IsElfFormat (
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IN CONST UINT8 *ImageBase
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);
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/**
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Parse the ELF image info.
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@param[in] ImageBase Memory address of an image.
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@param[out] ElfCt The EFL image context pointer.
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@retval EFI_INVALID_PARAMETER Input parameters are not valid.
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@retval EFI_UNSUPPORTED Unsupported binary type.
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@retval EFI_LOAD_ERROR ELF binary loading error.
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@retval EFI_SUCCESS ELF binary is loaded successfully.
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**/
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EFI_STATUS
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EFIAPI
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ParseElfImage (
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IN VOID *ImageBase,
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OUT ELF_IMAGE_CONTEXT *ElfCt
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);
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/**
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Load the ELF segments to specified address in ELF header.
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This function loads ELF image segments into memory address specified
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in ELF program header.
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@param[in] ElfCt ELF image context pointer.
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@retval EFI_INVALID_PARAMETER Input parameters are not valid.
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@retval EFI_UNSUPPORTED Unsupported binary type.
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@retval EFI_LOAD_ERROR ELF binary loading error.
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@retval EFI_SUCCESS ELF binary is loaded successfully.
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**/
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EFI_STATUS
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EFIAPI
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LoadElfImage (
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IN ELF_IMAGE_CONTEXT *ElfCt
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);
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/**
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Get a ELF section name from its index.
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@param[in] ElfCt ELF image context pointer.
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@param[in] SectionIndex ELF section index.
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@param[out] SectionName The pointer to the section name.
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@retval EFI_INVALID_PARAMETER ElfCt or SecName is NULL.
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@retval EFI_NOT_FOUND Could not find the section.
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@retval EFI_SUCCESS Section name was filled successfully.
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**/
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EFI_STATUS
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EFIAPI
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GetElfSectionName (
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IN ELF_IMAGE_CONTEXT *ElfCt,
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IN UINT32 SectionIndex,
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OUT CHAR8 **SectionName
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);
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/**
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Get the offset and size of x-th ELF section.
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@param[in] ElfCt ELF image context pointer.
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@param[in] Index ELF section index.
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@param[out] Offset Return the offset of the specific section.
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@param[out] Size Return the size of the specific section.
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@retval EFI_INVALID_PARAMETER ImageBase, Offset or Size is NULL.
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@retval EFI_INVALID_PARAMETER EiClass doesn't equal to ELFCLASS32 or ELFCLASS64.
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@retval EFI_NOT_FOUND Could not find the section.
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@retval EFI_SUCCESS Offset and Size are returned.
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**/
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EFI_STATUS
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EFIAPI
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GetElfSectionPos (
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IN ELF_IMAGE_CONTEXT *ElfCt,
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IN UINT32 Index,
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OUT UINTN *Offset,
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OUT UINTN *Size
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);
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#endif /* __ELF_LIB_H__ */
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