summaryrefslogtreecommitdiff
path: root/include/linux/som.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/som.h')
-rw-r--r--include/linux/som.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/include/linux/som.h b/include/linux/som.h
new file mode 100644
index 00000000..166594e4
--- /dev/null
+++ b/include/linux/som.h
@@ -0,0 +1,154 @@
+#ifndef _LINUX_SOM_H
+#define _LINUX_SOM_H
+
+/* File format definition for SOM executables / shared libraries */
+
+/* we need struct timespec */
+#include <linux/time.h>
+
+#define SOM_PAGESIZE 4096
+
+/* this is the SOM header */
+struct som_hdr {
+ short system_id; /* magic number - system */
+ short a_magic; /* magic number - file type */
+ unsigned int version_id; /* versiod ID: YYMMDDHH */
+ struct timespec file_time; /* system clock */
+ unsigned int entry_space; /* space for entry point */
+ unsigned int entry_subspace; /* subspace for entry point */
+ unsigned int entry_offset; /* offset of entry point */
+ unsigned int aux_header_location; /* auxiliary header location */
+ unsigned int aux_header_size; /* auxiliary header size */
+ unsigned int som_length; /* length of entire SOM */
+ unsigned int presumed_dp; /* compiler's DP value */
+ unsigned int space_location; /* space dictionary location */
+ unsigned int space_total; /* number of space entries */
+ unsigned int subspace_location; /* subspace entries location */
+ unsigned int subspace_total; /* number of subspace entries */
+ unsigned int loader_fixup_location; /* MPE/iX loader fixup */
+ unsigned int loader_fixup_total; /* number of fixup records */
+ unsigned int space_strings_location; /* (sub)space names */
+ unsigned int space_strings_size; /* size of strings area */
+ unsigned int init_array_location; /* reserved */
+ unsigned int init_array_total; /* reserved */
+ unsigned int compiler_location; /* module dictionary */
+ unsigned int compiler_total; /* number of modules */
+ unsigned int symbol_location; /* symbol dictionary */
+ unsigned int symbol_total; /* number of symbols */
+ unsigned int fixup_request_location; /* fixup requests */
+ unsigned int fixup_request_total; /* number of fixup requests */
+ unsigned int symbol_strings_location;/* module & symbol names area */
+ unsigned int symbol_strings_size; /* size of strings area */
+ unsigned int unloadable_sp_location; /* unloadable spaces location */
+ unsigned int unloadable_sp_size; /* size of data */
+ unsigned int checksum;
+};
+
+/* values for system_id */
+
+#define SOM_SID_PARISC_1_0 0x020b
+#define SOM_SID_PARISC_1_1 0x0210
+#define SOM_SID_PARISC_2_0 0x0214
+
+/* values for a_magic */
+
+#define SOM_LIB_EXEC 0x0104
+#define SOM_RELOCATABLE 0x0106
+#define SOM_EXEC_NONSHARE 0x0107
+#define SOM_EXEC_SHARE 0x0108
+#define SOM_EXEC_DEMAND 0x010B
+#define SOM_LIB_DYN 0x010D
+#define SOM_LIB_SHARE 0x010E
+#define SOM_LIB_RELOC 0x0619
+
+/* values for version_id. Decimal not hex, yes. Grr. */
+
+#define SOM_ID_OLD 85082112
+#define SOM_ID_NEW 87102412
+
+struct aux_id {
+ unsigned int mandatory :1; /* the linker must understand this */
+ unsigned int copy :1; /* Must be copied by the linker */
+ unsigned int append :1; /* Must be merged by the linker */
+ unsigned int ignore :1; /* Discard section if unknown */
+ unsigned int reserved :12;
+ unsigned int type :16; /* Header type */
+ unsigned int length; /* length of _following_ data */
+};
+
+/* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */
+struct som_exec_auxhdr {
+ struct aux_id som_auxhdr;
+ int exec_tsize; /* Text size in bytes */
+ int exec_tmem; /* Address to load text at */
+ int exec_tfile; /* Location of text in file */
+ int exec_dsize; /* Data size in bytes */
+ int exec_dmem; /* Address to load data at */
+ int exec_dfile; /* Location of data in file */
+ int exec_bsize; /* Uninitialised data (bss) */
+ int exec_entry; /* Address to start executing */
+ int exec_flags; /* loader flags */
+ int exec_bfill; /* initialisation value for bss */
+};
+
+/* Oh, the things people do to avoid casts. Shame it'll break with gcc's
+ * new aliasing rules really.
+ */
+union name_pt {
+ char * n_name;
+ unsigned int n_strx;
+};
+
+/* The Space Dictionary */
+struct space_dictionary_record {
+ union name_pt name; /* index to subspace name */
+ unsigned int is_loadable :1; /* loadable */
+ unsigned int is_defined :1; /* defined within file */
+ unsigned int is_private :1; /* not sharable */
+ unsigned int has_intermediate_code :1; /* contains intermediate code */
+ unsigned int is_tspecific :1; /* thread specific */
+ unsigned int reserved :11; /* for future expansion */
+ unsigned int sort_key :8; /* for linker */
+ unsigned int reserved2 :8; /* for future expansion */
+
+ int space_number; /* index */
+ int subspace_index; /* index into subspace dict */
+ unsigned int subspace_quantity; /* number of subspaces */
+ int loader_fix_index; /* for loader */
+ unsigned int loader_fix_quantity; /* for loader */
+ int init_pointer_index; /* data pointer array index */
+ unsigned int init_pointer_quantity; /* number of data pointers */
+};
+
+/* The Subspace Dictionary */
+struct subspace_dictionary_record {
+ int space_index;
+ unsigned int access_control_bits :7;
+ unsigned int memory_resident :1;
+ unsigned int dup_common :1;
+ unsigned int is_common :1;
+ unsigned int quadrant :2;
+ unsigned int initially_frozen :1;
+ unsigned int is_first :1;
+ unsigned int code_only :1;
+ unsigned int sort_key :8;
+ unsigned int replicate_init :1;
+ unsigned int continuation :1;
+ unsigned int is_tspecific :1;
+ unsigned int is_comdat :1;
+ unsigned int reserved :4;
+
+ int file_loc_init_value;
+ unsigned int initialization_length;
+ unsigned int subspace_start;
+ unsigned int subspace_length;
+
+ unsigned int reserved2 :5;
+ unsigned int alignment :27;
+
+ union name_pt name;
+ int fixup_request_index;
+ unsigned int fixup_request_quantity;
+};
+
+#endif /* _LINUX_SOM_H */