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pdp10-elf36.h: change e_ident to allow it to be binary compatible with Elf32 and Elf64, change ELFCLASS36 value to reduce change of collision with other Elf extensions

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Mikael Pettersson
2013-07-04 19:52:45 +00:00
parent 06134f9e04
commit 5d2fd7e2b3
1 changed files with 15 additions and 5 deletions
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20
include/pdp10-elf36.h
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@@ -26,10 +26,17 @@ typedef pdp10_uint9_t Elf36_Word_Ext[4];
/* ELF Header */
#define EI_NIDENT 16 /* Size of e_ident[] */
typedef struct {
Elf36_Uchar e_ident[EI_NIDENT]; /* ELF "magic number" */
/* In the standard 32 and 64 bit ELF specifications the ELF header starts
* with a 16-octet e_ident[] array, of which the first 9 octets are defined,
* and the last 7 octets should be zero. The enable a binary-compatible
* e_ident with Elf36, we pack the first 9 octets in two 36-bit words, and
* add two words of padding, making e_ident 16 bits larger in Elf36.
*/
Elf36_Word e_ident1; /* e_ident[] indices 0 to 4.5 */
Elf36_Word e_ident2; /* e_ident[] indices 4.5 to 8 */
Elf36_Word e_ident3; /* padding zeros */
Elf36_Word e_ident4; /* padding zeros */
Elf36_Half e_type; /* Identifies object file type */
Elf36_Half e_machine; /* Specifies required architecture */
Elf36_Word e_version; /* Identifies object file version */
@@ -46,7 +53,10 @@ typedef struct {
} Elf36_Ehdr;
typedef struct {
Elf36_Uchar_Ext e_ident[EI_NIDENT]; /* ELF "magic number" */
Elf36_Word_Ext e_ident1; /* e_ident[] indices 0 to 4.5 */
Elf36_Word_Ext e_ident2; /* e_ident[] indices 4.5 to 8 */
Elf36_Word_Ext e_ident3; /* padding zeros */
Elf36_Word_Ext e_ident4; /* padding zeros */
Elf36_Half_Ext e_type; /* Identifies object file type */
Elf36_Half_Ext e_machine; /* Specifies required architecture */
Elf36_Word_Ext e_version; /* Identifies object file version */
@@ -83,7 +93,7 @@ typedef struct {
#define ELFCLASSNONE 0 /* Invalid class */
#define ELFCLASS32 1 /* 32-bit objects */
#define ELFCLASS64 2 /* 64-bit objects */
#define ELFCLASS36 3 /* 36-bit objects */
#define ELFCLASS36 36 /* 36-bit objects */
#define ELFDATANONE 0 /* Invalid data encoding */
#define ELFDATA2LSB 1 /* 2's complement, little endian */