ELF core files

common/include/arch/i386/Makefile.inc

@@ -4,5 +4,5 @@
 INCS+=	archtypes.h bios.h cmos.h cpu.h diskparm.h fpu.h int86.h \
 	interrupt.h memory.h multiboot.h partition.h \
 	pci.h pci_amd.h pci_intel.h pci_sis.h pci_via.h \
-	ports.h stackframe.h vm.h elf.h
+	ports.h stackframe.h vm.h elf.h elf_machdep.h
 

common/include/arch/i386/elf_machdep.h

@@ -0,0 +1,63 @@
+/*	$NetBSD: elf_machdep.h,v 1.10 2009/05/30 05:56:52 skrll Exp $	*/
+
+#define	ELF32_MACHDEP_ENDIANNESS	ELFDATA2LSB
+#define	ELF32_MACHDEP_ID_CASES						\
+		case EM_386:						\
+		case EM_486:						\
+			break;
+
+#define	ELF64_MACHDEP_ENDIANNESS	XXX	/* break compilation */
+#define	ELF64_MACHDEP_ID_CASES						\
+		/* no 64-bit ELF machine types supported */
+
+#define	ELF32_MACHDEP_ID		EM_386
+
+#define ARCH_ELFSIZE		32	/* MD native binary size */
+
+/* i386 relocations */
+#define	R_386_NONE	0
+#define	R_386_32	1
+#define	R_386_PC32	2
+#define	R_386_GOT32	3
+#define	R_386_PLT32	4
+#define	R_386_COPY	5
+#define	R_386_GLOB_DAT	6
+#define	R_386_JMP_SLOT	7
+#define	R_386_RELATIVE	8
+#define	R_386_GOTOFF	9
+#define	R_386_GOTPC	10
+
+/* TLS relocations */
+#define	R_386_TLS_TPOFF	14
+#define	R_386_TLS_IE	15
+#define	R_386_TLS_GOTIE	16
+#define	R_386_TLS_LE	17
+#define	R_386_TLS_GD	18
+#define	R_386_TLS_LDM	19
+
+/* The following relocations are GNU extensions. */
+#define	R_386_16	20
+#define	R_386_PC16	21
+#define	R_386_8		22
+#define	R_386_PC8	23
+
+/* More TLS relocations */
+#define	R_386_TLS_GD_32		24
+#define	R_386_TLS_GD_PUSH	25
+#define	R_386_TLS_GD_CALL	26
+#define	R_386_TLS_GD_POP	27
+#define	R_386_TLS_LDM_32	28
+#define	R_386_TLS_LDM_PUSH	29
+#define	R_386_TLS_LDM_CALL	30
+#define	R_386_TLS_LDM_POP	31
+#define	R_386_TLS_LDO_32	32
+#define	R_386_TLS_IE_32		33
+#define	R_386_TLS_LE_32		34
+#define	R_386_TLS_DTPMOD32	35
+#define	R_386_TLS_DTPOFF32	36
+#define	R_386_TLS_TPOFF32	37
+#define	R_386_TLS_GOTDESC	39
+#define	R_386_TLS_DESC_CALL	40
+#define	R_386_TLS_DESC		41
+
+#define	R_TYPE(name)	__CONCAT(R_386_,name)

common/include/minix/com.h

@@ -792,6 +792,9 @@
 #  define PM_PPROC		m1_i2	/* parent process endpoint */
 #  define PM_CPID		m1_i3	/* child pid */
 
+/* Additional parameters for PM_DUMPCORE */
+#  define PM_TERM_SIG		m1_i2	/* process's termination signal */
+
 /* Parameters for the EXEC_NEWMEM call */
 #define EXC_NM_PROC	m1_i1		/* process that needs new map */
 #define EXC_NM_PTR	m1_p1		/* parameters in struct exec_newmem */

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_ */
+