- from = (char *) ®isters[REGISTER_BYTE (regi)];
- to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
- memcpy (to, from, REGISTER_RAW_SIZE (regi));
- }
- }
-
- if ((regno == -1) || (regno == FCRCS_REGNUM))
- fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)];
-}
-
-
-/* Figure out where the longjmp will land.
- We expect the first arg to be a pointer to the jmp_buf structure from which
- we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
- This routine returns true on success. */
-
-int
-get_longjmp_target (pc)
- CORE_ADDR *pc;
-{
- char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
- CORE_ADDR jb_addr;
-
- jb_addr = read_register (A0_REGNUM);
-
- if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
- TARGET_PTR_BIT / TARGET_CHAR_BIT))
- return 0;
-
- *pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
-
- return 1;
-}
-
-static void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
- char *core_reg_sect;
- unsigned core_reg_size;
- int which; /* Unused */
- CORE_ADDR reg_addr; /* Unused */
-{
- if (core_reg_size == REGISTER_BYTES)
- {
- memcpy ((char *) registers, core_reg_sect, core_reg_size);
- }
- else if (MIPS_REGSIZE == 4 &&
- core_reg_size == (2 * MIPS_REGSIZE) * NUM_REGS)
- {
- /* This is a core file from a N32 executable, 64 bits are saved
- for all registers. */
- char *srcp = core_reg_sect;
- char *dstp = registers;
- int regno;
-
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- if (regno >= FP0_REGNUM && regno < (FP0_REGNUM + 32))
- {
- /* FIXME, this is wrong, N32 has 64 bit FP regs, but GDB
- currently assumes that they are 32 bit. */
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- if (REGISTER_RAW_SIZE (regno) == 4)
- {
- /* copying 4 bytes from eight bytes?
- I don't see how this can be right... */
- srcp += 4;
- }
- else
- {
- /* copy all 8 bytes (sizeof(double)) */
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- }
- }
- else
- {
- srcp += 4;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- }
- }
- }
- else
- {
- warning ("wrong size gregset struct in core file");
- return;
- }
-
- registers_fetched ();
-}
-\f
-/* Irix 5 uses what appears to be a unique form of shared library
- support. This is a copy of solib.c modified for Irix 5. */
-/* FIXME: Most of this code could be merged with osfsolib.c and solib.c
- by using next_link_map_member and xfer_link_map_member in solib.c. */
-
-#include <sys/types.h>
-#include <signal.h>
-#include <sys/param.h>
-#include <fcntl.h>
-
-/* <obj.h> includes <sym.h> and <symconst.h>, which causes conflicts
- with our versions of those files included by tm-mips.h. Prevent
- <obj.h> from including them with some appropriate defines. */
-#define __SYM_H__
-#define __SYMCONST_H__
-#include <obj.h>
-#ifdef HAVE_OBJLIST_H
-#include <objlist.h>
-#endif
-
-#ifdef NEW_OBJ_INFO_MAGIC
-#define HANDLE_NEW_OBJ_LIST
-#endif
-
-#include "symtab.h"
-#include "bfd.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "command.h"
-#include "frame.h"
-#include "gnu-regex.h"
-#include "inferior.h"
-#include "language.h"
-#include "gdbcmd.h"
-
-/* The symbol which starts off the list of shared libraries. */
-#define DEBUG_BASE "__rld_obj_head"
-
-/* Irix 6.x introduces a new variant of object lists.
- To be able to debug O32 executables under Irix 6, we have to handle both
- variants. */
-
-typedef enum
-{
- OBJ_LIST_OLD, /* Pre Irix 6.x object list. */
- OBJ_LIST_32, /* 32 Bit Elf32_Obj_Info. */
- OBJ_LIST_64 /* 64 Bit Elf64_Obj_Info, FIXME not yet implemented. */
-}
-obj_list_variant;
-
-/* Define our own link_map structure.
- This will help to share code with osfsolib.c and solib.c. */
-
-struct link_map
- {
- obj_list_variant l_variant; /* which variant of object list */
- CORE_ADDR l_lladdr; /* addr in inferior list was read from */
- CORE_ADDR l_next; /* address of next object list entry */
- };
-
-/* Irix 5 shared objects are pre-linked to particular addresses
- although the dynamic linker may have to relocate them if the
- address ranges of the libraries used by the main program clash.
- The offset is the difference between the address where the object
- is mapped and the binding address of the shared library. */
-#define LM_OFFSET(so) ((so) -> offset)
-/* Loaded address of shared library. */
-#define LM_ADDR(so) ((so) -> lmstart)
-
-char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
-
-struct so_list
- {
- struct so_list *next; /* next structure in linked list */
- struct link_map lm;
- CORE_ADDR offset; /* prelink to load address offset */
- char *so_name; /* shared object lib name */
- CORE_ADDR lmstart; /* lower addr bound of mapped object */
- CORE_ADDR lmend; /* upper addr bound of mapped object */
- char symbols_loaded; /* flag: symbols read in yet? */
- char from_tty; /* flag: print msgs? */
- struct objfile *objfile; /* objfile for loaded lib */
- struct section_table *sections;
- struct section_table *sections_end;
- struct section_table *textsection;
- bfd *abfd;
- };
-
-static struct so_list *so_list_head; /* List of known shared objects */
-static CORE_ADDR debug_base; /* Base of dynamic linker structures */
-static CORE_ADDR breakpoint_addr; /* Address where end bkpt is set */
-
-/* Local function prototypes */
-
-static void
-sharedlibrary_command PARAMS ((char *, int));
-
-static int
-enable_break PARAMS ((void));
-
-static int
-disable_break PARAMS ((void));
-
-static void
-info_sharedlibrary_command PARAMS ((char *, int));
-
-static int
-symbol_add_stub PARAMS ((char *));
-
-static struct so_list *
- find_solib PARAMS ((struct so_list *));
-
-static struct link_map *
- first_link_map_member PARAMS ((void));
-
-static struct link_map *
- next_link_map_member PARAMS ((struct so_list *));
-
-static void
-xfer_link_map_member PARAMS ((struct so_list *, struct link_map *));
-
-static CORE_ADDR
- locate_base PARAMS ((void));
-
-static int
-solib_map_sections PARAMS ((char *));
-
-/*
-
- LOCAL FUNCTION
-
- solib_map_sections -- open bfd and build sections for shared lib
-
- SYNOPSIS
-
- static int solib_map_sections (struct so_list *so)
-
- DESCRIPTION
-
- Given a pointer to one of the shared objects in our list
- of mapped objects, use the recorded name to open a bfd
- descriptor for the object, build a section table, and then
- relocate all the section addresses by the base address at
- which the shared object was mapped.
-
- FIXMES
-
- In most (all?) cases the shared object file name recorded in the
- dynamic linkage tables will be a fully qualified pathname. For
- cases where it isn't, do we really mimic the systems search
- mechanism correctly in the below code (particularly the tilde
- expansion stuff?).
- */
-
-static int
-solib_map_sections (arg)
- char *arg;
-{
- struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */
- char *filename;
- char *scratch_pathname;
- int scratch_chan;
- struct section_table *p;
- struct cleanup *old_chain;
- bfd *abfd;
-
- filename = tilde_expand (so->so_name);
- old_chain = make_cleanup (free, filename);
-
- scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
- &scratch_pathname);
- if (scratch_chan < 0)
- {
- scratch_chan = openp (getenv ("LD_LIBRARY_PATH"), 1, filename,
- O_RDONLY, 0, &scratch_pathname);
- }
- if (scratch_chan < 0)
- {
- perror_with_name (filename);
- }
- /* Leave scratch_pathname allocated. abfd->name will point to it. */
-
- abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
- if (!abfd)
- {
- close (scratch_chan);
- error ("Could not open `%s' as an executable file: %s",
- scratch_pathname, bfd_errmsg (bfd_get_error ()));
- }
- /* Leave bfd open, core_xfer_memory and "info files" need it. */
- so->abfd = abfd;
- abfd->cacheable = true;
-
- if (!bfd_check_format (abfd, bfd_object))
- {
- error ("\"%s\": not in executable format: %s.",
- scratch_pathname, bfd_errmsg (bfd_get_error ()));
- }
- if (build_section_table (abfd, &so->sections, &so->sections_end))
- {
- error ("Can't find the file sections in `%s': %s",
- bfd_get_filename (exec_bfd), bfd_errmsg (bfd_get_error ()));
- }