ELF core files

common/include/sys/Makefile.inc

@@ -5,5 +5,5 @@
 INCS+= 	elf32.h elf64.h elf_common.h elf_generic.h \
 	ioc_file.h ioc_tape.h ioc_disk.h \
 	ioc_memory.h ioc_sound.h ioc_tty.h \
-	kbdio.h mtio.h svrctl.h video.h vm.h
+	kbdio.h mtio.h svrctl.h video.h vm.h procfs.h elf_core.h exec_elf.h
 

common/include/sys/elf_core.h

@@ -0,0 +1,50 @@
+/*
+ * This file mainly provides a definition of the structures used
+ * to describe the notes section of an ELF file.
+ *
+ * It is the interface between MINIX core dump and GDB
+ */
+
+#ifndef _SYS_ELF_CORE_H_
+#define _SYS_ELF_CORE_H_
+
+#include <sys/param.h>
+#include <machine/stackframe.h>
+
+/* MINIX core file format:
+ *
+ * The core file is in ELF format. Besides the regular program segments,
+ * it has a NOTE segment which contains two NOTE entries
+ * - one containing a minix_elfcore_info_t and the other one containing
+ * the general purpose registers (a stackframe_s structure)
+ */
+
+typedef struct stackframe_s gregset_t; /* General purpose registers */
+
+/*
+ * A lot more things should be added to these structures.  At present,
+ * they contain the absolute bare minimum required to allow GDB to work
+ * with MINIX ELF core dumps.
+ */
+
+#define ELF_NOTE_MINIX_ELFCORE_NAME	"MINIX-CORE"
+#define NT_MINIX_ELFCORE_INFO		1
+#define NT_MINIX_ELFCORE_GREGS		2
+
+#define MINIX_ELFCORE_VERSION		1  /* Current version of minix_elfcore_info_t */
+#define RESERVED_SIZE                   5
+
+typedef struct minix_elfcore_info {
+  /* Version 1 fields */
+  uint32_t	mei_version;		/* Version number of struct */
+  uint32_t	mei_meisize;		/* sizeof(minix_elfcore_info_t) */
+  uint32_t	mei_signo;		/* killing signal */
+  int32_t	mei_pid;		/* Process ID */
+  int8_t        mei_command[MAXCOMLEN]; /* Command */
+  uint32_t      flags;                  /* Flags */
+  int32_t       reserved[RESERVED_SIZE];/* Reserved space*/
+  /* Put below version 2 fields */
+} minix_elfcore_info_t;
+
+#endif /* _SYS_ELF_CORE_H_ */
+

common/include/sys/elf_generic.h

@@ -70,6 +70,7 @@ __ElfType(Sword);
 __ElfType(Word);
 __ElfType(Ehdr);
 __ElfType(Shdr);
+__ElfType(Nhdr);
 __ElfType(Phdr);
 __ElfType(Dyn);
 __ElfType(Rel);

common/include/sys/procfs.h

@@ -0,0 +1,61 @@
+/*
+ * This file mainly provides a definition of the structures used
+ * to describe the notes section of an ELF file. It doesn't have
+ * anything to do with the /proc file system, even though MINIX
+ * has one.
+ *
+ * The whole purpose of this file is for GDB and GDB only.
+ */
+
+#ifndef _SYS_PROCFS_H_
+#define _SYS_PROCFS_H_
+
+#include <sys/param.h>
+#include <i386/stackframe.h>
+
+/*
+ *
+ * These structures define an interface between core files and the debugger.
+ * Never change or delete any elements. These structures are modeled from
+ * the file with the same name from FreeBSD
+ * 
+ * A lot more things should be added to these structures.  At present,
+ * they contain the absolute bare minimum required to allow GDB to work
+ * with ELF core dumps.
+ */
+
+/*
+ * The parenthsized numbers like (1) indicate the minimum version number
+ * for which each element exists in the structure.
+ */
+
+#define PRSTATUS_VERSION	1	/* Current version of prstatus_t */
+
+typedef struct prstatus {
+    int		pr_version;	/* Version number of struct (1) */
+    size_t	pr_statussz;	/* sizeof(prstatus_t) (1) */
+    size_t	pr_gregsetsz;	/* sizeof(gregset_t) (1) */
+    size_t	pr_fpregsetsz;	/* sizeof(fpregset_t) (1) */
+    int		pr_osreldate;	/* Kernel version (1) */
+    int		pr_cursig;	/* Current signal (1) */
+    pid_t	pr_pid;		/* Process ID (1) */
+    gregset_t	pr_reg;		/* General purpose registers (1) */
+} prstatus_t;
+
+#define PRARGSZ		80	/* Maximum argument bytes saved */
+
+#ifndef MAXCOMLEN
+# define MAXCOMLEN      16      /* Maximum command line arguments */
+#endif
+
+#define PRPSINFO_VERSION	1	/* Current version of prpsinfo_t */
+
+typedef struct prpsinfo {
+    int		pr_version;	/* Version number of struct (1) */
+    size_t	pr_psinfosz;	/* sizeof(prpsinfo_t) (1) */
+    char	pr_fname[MAXCOMLEN+1];	/* Command name, null terminated (1) */
+    char	pr_psargs[PRARGSZ+1];	/* Arguments, null terminated (1) */
+} prpsinfo_t;
+
+#endif /* _SYS_PROCFS_H_ */
+