elf2cfetbl Integration candidate: Caelum-rc4+dev57

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## Development Build: v3.3.0-rc4+dev36
+- Adds CheckStatus helper functions
+- Reduce cyclomatic complexity of GetElfHeader
+- See <https://github.com/nasa/elf2cfetbl/pull/137> and <https://github.com/nasa/elf2cfetbl/pull/136>
+
 ## Development Build: v3.3.0-rc4+dev30
 - Remove C++-style comments
 - See <https://github.com/nasa/elf2cfetbl/pull/119>

elf2cfetbl.c

@@ -59,6 +59,7 @@ int32 GetSrcFilename(void);
 int32 GetDstFilename(void);
 int32 OpenSrcFile(void);
 int32 OpenDstFile(void);
+int32 checkELFFileMagicNumber(void);
 int32 GetElfHeader(void);
 void  SwapElfHeader(void);
 int32 GetSectionHeader(int32 SectionIndex, union Elf_Shdr *SectionHeader);
@@ -596,6 +597,24 @@ uint16_t get_st_shndx(const union Elf_Sym *Symbol)
     }
 }
 
+/* Check status helper functions */
+void CheckStatusAndExit(int32 status)
+{
+    if (status != SUCCESS)
+    {
+        exit(status);
+    }
+}
+
+void CheckStatusCleanupAndExit(int32 status)
+{
+    if (status != SUCCESS)
+    {
+        FreeMemoryAllocations();
+        exit(status);
+    }
+}
+
 /**
  *
  */
@@ -606,30 +625,26 @@ int main(int argc, char *argv[])
     int32 i      = 0;
 
     Status = ProcessCmdLineOptions(argc, argv);
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusAndExit(Status);
 
     if (ReportVersion)
         OutputVersionInfo();
 
-    Status = GetSrcFilename();
     if (OutputHelp)
         OutputHelpInfo();
-    if (Status != SUCCESS)
-        return Status;
+
+    Status = GetSrcFilename();
+    CheckStatusAndExit(Status);
 
     Status = OpenSrcFile();
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusAndExit(Status);
 
     Status = GetElfHeader();
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusAndExit(Status);
 
     /* Get the string section header first */
     Status = GetSectionHeader(get_e_shstrndx(&ElfHeader), &SectionHeaderStringTable);
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusCleanupAndExit(Status);
 
     if (TargetWordsizeIs32Bit)
     {
@@ -642,21 +657,13 @@ int main(int argc, char *argv[])
 
     /* Allocate memory for all of the ELF object file section headers */
     Status = AllocateSectionHeaders();
-    if (Status != SUCCESS)
-    {
-        FreeMemoryAllocations();
-        return Status;
-    }
+    CheckStatusCleanupAndExit(Status);
 
     /* Read in each section header from input file */
     for (i = 0; i < get_e_shnum(&ElfHeader); i++)
     {
         Status = GetSectionHeader(i, SectionHeaderPtrs[i]);
-        if (Status != SUCCESS)
-        {
-            FreeMemoryAllocations();
-            return Status;
-        }
+        CheckStatusCleanupAndExit(Status);
     }
 
     if (StringTableDataOffset == 0)
@@ -667,21 +674,13 @@ int main(int argc, char *argv[])
 
     /* Allocate memory for all of the symbol table entries */
     Status = AllocateSymbols();
-    if (Status != SUCCESS)
-    {
-        FreeMemoryAllocations();
-        return Status;
-    }
+    CheckStatusCleanupAndExit(Status);
 
     /* Read in each symbol table entry */
     for (i = 0; i < NumSymbols; i++)
     {
         Status = GetSymbol(i, SymbolPtrs[i]);
-        if (Status != SUCCESS)
-        {
-            FreeMemoryAllocations();
-            return Status;
-        }
+        CheckStatusCleanupAndExit(Status);
     }
 
     if (TblDefSymbolIndex == -1)
@@ -693,26 +692,16 @@ int main(int argc, char *argv[])
 
     /* Read in the definition of the table file */
     Status = GetTblDefInfo();
-    if (Status != SUCCESS)
-    {
-        FreeMemoryAllocations();
-        return Status;
-    }
+    CheckStatusCleanupAndExit(Status);
 
     Status = GetDstFilename();
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusAndExit(Status);
 
     Status = OpenDstFile();
-    if (Status != SUCCESS)
-        return Status;
+    CheckStatusAndExit(Status);
 
     Status = LocateAndReadUserObject();
-    if (Status != SUCCESS)
-    {
-        FreeMemoryAllocations();
-        return Status;
-    }
+    CheckStatusCleanupAndExit(Status);
 
     Status = OutputDataToTargetFile();
 
@@ -1460,6 +1449,18 @@ int32 OpenDstFile(void)
     return SUCCESS;
 }
 
+/**
+ *
+ */
+
+int32 checkELFFileMagicNumber(void)
+{
+    if (get_e_ident(&ElfHeader, EI_MAG0) != ELFMAG0 || get_e_ident(&ElfHeader, EI_MAG1) != ELFMAG1 ||
+        get_e_ident(&ElfHeader, EI_MAG2) != ELFMAG2 || get_e_ident(&ElfHeader, EI_MAG3) != ELFMAG3)
+        return FAILED;
+    return SUCCESS;
+}
+
 /**
  *
  */
@@ -1493,20 +1494,15 @@ int32 GetElfHeader(void)
     }
 
     if (Verbose)
-        printf("ELF Header:\n");
-    if (Verbose)
-        printf("   e_ident[EI_MAG0..3] = 0x%02x,%c%c%c\n", get_e_ident(&ElfHeader, EI_MAG0),
-               get_e_ident(&ElfHeader, EI_MAG1), get_e_ident(&ElfHeader, EI_MAG2), get_e_ident(&ElfHeader, EI_MAG3));
+    {
+        printf("ELF Header:\n"
+               "   e_ident[EI_MAG0..3] = 0x%02x,%c%c%c\n",
+               get_e_ident(&ElfHeader, EI_MAG0), get_e_ident(&ElfHeader, EI_MAG1), get_e_ident(&ElfHeader, EI_MAG2),
+               get_e_ident(&ElfHeader, EI_MAG3));
+    }
 
     /* Verify the ELF file magic number */
-    if (get_e_ident(&ElfHeader, EI_MAG0) != ELFMAG0)
-        Status = FAILED;
-    if (get_e_ident(&ElfHeader, EI_MAG1) != ELFMAG1)
-        Status = FAILED;
-    if (get_e_ident(&ElfHeader, EI_MAG2) != ELFMAG2)
-        Status = FAILED;
-    if (get_e_ident(&ElfHeader, EI_MAG3) != ELFMAG3)
-        Status = FAILED;
+    Status = checkELFFileMagicNumber();
 
     if (Status == FAILED)
     {

elf2cfetbl_version.h

@@ -28,7 +28,7 @@
 /*
  * Development Build Macro Definitions
  */
-#define ELF2CFETBL_BUILD_NUMBER 30 /*!< @brief Number of commits since baseline */
+#define ELF2CFETBL_BUILD_NUMBER 36 /*!< @brief Number of commits since baseline */
 #define ELF2CFETBL_BUILD_BASELINE \
     "v3.3.0-rc4" /*!< @brief Development Build: git tag that is the base for the current */