+2001-07-10 Daniel Jacobowitz <drow@mvista.com>
+
+ * mips-linux-tdep.c: New file.
+ * mips-linux-nat.c: New file.
+ * config/mips/linux.mh: New file.
+ * config/mips/linux.mt: New file.
+ * config/mips/xm-linux.h: New file.
+ * config/mips/nm-linux.h: New file.
+ * config/mips/tm-linux.h: New file.
+ * configure.host: Recognize mips*-*-linux*.
+ * configure.tgt: Likewise.
+ * NEWS: Mention mips*-*-linux* port.
+
2001-07-09 Andrew Cagney <ac131313@redhat.com>
* serial.h (struct serial): Rename `struct _serial_t'.
Alpha FreeBSD alpha*-*-freebsd*
x86 FreeBSD 3.x and 4.x i[3456]86*-freebsd[34]*
+MIPS Linux mips*-*-linux*
* New targets
--- /dev/null
+# Host: Linux/MIPS
+XDEPFILES=
+XM_FILE= xm-linux.h
+NAT_FILE= nm-linux.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o mips-linux-nat.o \
+ thread-db.o lin-lwp.o proc-service.o
+
+LOADLIBES = -ldl -rdynamic
--- /dev/null
+# Target: Linux/MIPS
+TDEPFILES= mips-tdep.o mips-linux-tdep.o corelow.o \
+ solib.o solib-svr4.o
+TM_FILE= tm-linux.h
+
+GDBSERVER_DEPFILES= low-linux.o
+
+SIM_OBS = remote-sim.o
+SIM = ../sim/mips/libsim.a
--- /dev/null
+/* Native-dependent definitions for Linux/MIPS.
+ Copyright 1996, 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef NM_MIPSLINUX_H
+#define NM_MIPSLINUX_H
+
+#define MIPS_GNULINUX_TARGET
+
+#include "nm-linux.h"
+
+/* Return sizeof user struct to callers in less machine dependent
+ routines. Hard coded for cross-compilation friendliness. */
+
+#define KERNEL_U_SIZE 504
+
+/* ptrace register ``addresses'' are absolute. */
+
+#define U_REGS_OFFSET 0
+
+/* ptrace transfers longs, and expects addresses as longs. */
+
+#define PTRACE_ARG3_TYPE long
+#define PTRACE_XFER_TYPE long
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+ (addr) = mips_register_addr ((regno),(blockend))
+
+int mips_linux_cannot_fetch_register (int regno);
+int mips_linux_cannot_store_register (int regno);
+#define CANNOT_FETCH_REGISTER(regno) mips_linux_cannot_fetch_register (regno)
+#define CANNOT_STORE_REGISTER(regno) mips_linux_cannot_store_register (regno)
+
+/* FIXME: This should be moved to ../nm-linux.h once we have converted all
+ Linux targets to use the new threads stuff (without the #undef of
+ course). */
+
+extern int lin_lwp_prepare_to_proceed (void);
+#undef PREPARE_TO_PROCEED
+#define PREPARE_TO_PROCEED(select_it) lin_lwp_prepare_to_proceed ()
+
+extern void lin_lwp_attach_lwp (ptid_t ptid, int verbose);
+#define ATTACH_LWP(ptid, verbose) lin_lwp_attach_lwp ((ptid), (verbose))
+
+#include <signal.h>
+
+extern void lin_thread_get_thread_signals (sigset_t *mask);
+#define GET_THREAD_SIGNALS(mask) lin_thread_get_thread_signals (mask)
+
+#endif /* NM_MIPSLINUX_H */
--- /dev/null
+/* Target-dependent definitions for Linux/MIPS.
+ Copyright 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef TM_MIPSLINUX_H
+#define TM_MIPSLINUX_H
+
+#include "mips/tm-mips.h"
+
+/* We don't want to inherit tm-mips.h's shared library trampoline code. */
+
+#undef IN_SOLIB_CALL_TRAMPOLINE
+#undef IN_SOLIB_RETURN_TRAMPOLINE
+#undef SKIP_TRAMPOLINE_CODE
+#undef IGNORE_HELPER_CALL
+
+/* FIXME: Do not include "tm-linux.h", because we do not want the host's
+ <signal.h>. Instead, copy the non-signal bits for now. */
+
+/* We need this file for the SOLIB_TRAMPOLINE stuff. */
+
+#include "tm-sysv4.h"
+
+/* We define SVR4_SHARED_LIBS unconditionally, on the assumption that
+ link.h is available on all linux platforms. For I386 and SH3/4,
+ we hard-code the information rather than use link.h anyway (for
+ the benefit of cross-debugging). We may move to doing that for
+ other architectures as well. */
+
+#define SVR4_SHARED_LIBS
+#include "solib.h" /* Support for shared libraries. */
+
+/* End from "tm-linux.h". */
+
+/* There's an E_MIPS_ABI_O32 flag in e_flags, but we don't use it - in
+ fact, using it may violate the o32 ABI. */
+
+#define MIPS_DEFAULT_ABI MIPS_ABI_O32
+
+/* Linux/MIPS has __SIGRTMAX == 127. */
+
+#define REALTIME_LO 32
+#define REALTIME_HI 128
+
+/* Use target_specific function to define link map offsets. */
+
+extern struct link_map_offsets *mips_linux_svr4_fetch_link_map_offsets (void);
+#define SVR4_FETCH_LINK_MAP_OFFSETS() \
+ mips_linux_svr4_fetch_link_map_offsets ()
+
+/* Details about jmp_buf. */
+
+#define JB_ELEMENT_SIZE 4
+#define JB_PC 0
+
+/* Figure out where the longjmp will land. Slurp the arguments out of the
+ stack. 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 ADDR. This routine returns 1 on success. */
+
+#define GET_LONGJMP_TARGET(ADDR) mips_linux_get_longjmp_target(ADDR)
+extern int mips_linux_get_longjmp_target (CORE_ADDR *);
+
+/* We do single stepping in software. */
+
+#define SOFTWARE_SINGLE_STEP_P() 1
+#define SOFTWARE_SINGLE_STEP(sig,bp_p) mips_software_single_step (sig, bp_p)
+
+/* FIXME: This still needs to be implemented. */
+
+#undef IN_SIGTRAMP
+#define IN_SIGTRAMP(pc, name) (0)
+
+#endif /* TM_MIPSLINUX_H */
--- /dev/null
+/* Host definitions for Linux/MIPS.
+ Copyright 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef XM_MIPSLINUX_H
+#define XM_MIPSLINUX_H
+
+#ifndef HOST_BYTE_ORDER
+#include <endian.h>
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define HOST_BYTE_ORDER BIG_ENDIAN
+#else
+#define HOST_BYTE_ORDER LITTLE_ENDIAN
+#endif
+#endif
+
+/* Need R_OK etc, but USG isn't defined. */
+#include <unistd.h>
+
+#endif /* XM_MIPSLINUX_H */
i[3456]86*) gdb_host_cpu=i386 ;;
m68*) gdb_host_cpu=m68k ;;
m88*) gdb_host_cpu=m88k ;;
+mips*) gdb_host_cpu=mips ;;
powerpc*) gdb_host_cpu=powerpc ;;
sparc64) gdb_host_cpu=sparc ;;
s390*) gdb_host_cpu=s390 ;;
mips-sgi-irix5*) gdb_host=irix5 ;;
mips-sgi-irix6*) gdb_host=irix6 ;;
mips-sony-*) gdb_host=news-mips ;;
+mips*-*-linux*) gdb_host=linux ;;
mips-*-mach3*) gdb_host=mipsm3 ;;
mips-*-sysv4*) gdb_host=mipsv4 ;;
mips-*-sysv*) gdb_host=riscos ;;
mips*-sgi-irix6*) gdb_target=irix6 ;;
mips*-sgi-*) gdb_target=irix3 ;;
mips*-sony-*) gdb_target=bigmips ;;
+mips*-*-linux*) gdb_target=linux ;;
mips*-*-mach3*) gdb_target=mipsm3 ;;
mips*-*-sysv4*) gdb_target=mipsv4 ;;
mips*-*-sysv*) gdb_target=bigmips ;;
--- /dev/null
+/* Native-dependent code for Linux/MIPS.
+ Copyright 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+
+/* Pseudo registers can not be read. ptrace does not provide a way to
+ read (or set) PS_REGNUM, and there's no point in reading or setting
+ ZERO_REGNUM. We also can not set BADVADDR, CAUSE, or FCRIR via
+ ptrace(). */
+
+int
+mips_linux_cannot_fetch_register (int regno)
+{
+ if (regno >= FP_REGNUM)
+ return 1;
+ else if (regno == PS_REGNUM)
+ return 1;
+ else if (regno == ZERO_REGNUM)
+ return 1;
+ else
+ return 0;
+}
+
+int
+mips_linux_cannot_store_register (int regno)
+{
+ if (regno >= FP_REGNUM)
+ return 1;
+ else if (regno == PS_REGNUM)
+ return 1;
+ else if (regno == ZERO_REGNUM)
+ return 1;
+ else if (regno == BADVADDR_REGNUM)
+ return 1;
+ else if (regno == CAUSE_REGNUM)
+ return 1;
+ else if (regno == FCRIR_REGNUM)
+ return 1;
+ else
+ return 0;
+}
--- /dev/null
+/* Target-dependent code for Linux/MIPS.
+ Copyright 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "gdbcore.h"
+#include "target.h"
+#include "solib-svr4.h"
+
+/* Copied from <asm/elf.h>. */
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+
+typedef unsigned char elf_greg_t[4];
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef unsigned char elf_fpreg_t[8];
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
+#define FPR_BASE 32
+#define PC 64
+#define CAUSE 65
+#define BADVADDR 66
+#define MMHI 67
+#define MMLO 68
+#define FPC_CSR 69
+#define FPC_EIR 70
+
+#define EF_REG0 6
+#define EF_REG31 37
+#define EF_LO 38
+#define EF_HI 39
+#define EF_CP0_EPC 40
+#define EF_CP0_BADVADDR 41
+#define EF_CP0_STATUS 42
+#define EF_CP0_CAUSE 43
+
+#define EF_SIZE 180
+
+/* 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 1 on success. */
+
+int
+mips_linux_get_longjmp_target (CORE_ADDR *pc)
+{
+ CORE_ADDR jb_addr;
+ char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
+
+ 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;
+}
+
+/* Unpack an elf_gregset_t into GDB's register cache. */
+
+void
+supply_gregset (elf_gregset_t *gregsetp)
+{
+ int regi;
+ elf_greg_t *regp = *gregsetp;
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
+
+ for (regi = EF_REG0; regi <= EF_REG31; regi++)
+ supply_register ((regi - EF_REG0), (char *)(regp + regi));
+
+ supply_register (LO_REGNUM, (char *)(regp + EF_LO));
+ supply_register (HI_REGNUM, (char *)(regp + EF_HI));
+
+ supply_register (PC_REGNUM, (char *)(regp + EF_CP0_EPC));
+ supply_register (BADVADDR_REGNUM, (char *)(regp + EF_CP0_BADVADDR));
+ supply_register (PS_REGNUM, (char *)(regp + EF_CP0_STATUS));
+ supply_register (CAUSE_REGNUM, (char *)(regp + EF_CP0_CAUSE));
+
+ /* Fill inaccessible registers with zero. */
+ supply_register (FP_REGNUM, zerobuf);
+ supply_register (UNUSED_REGNUM, zerobuf);
+ for (regi = FIRST_EMBED_REGNUM; regi < LAST_EMBED_REGNUM; regi++)
+ supply_register (regi, zerobuf);
+}
+
+/* Pack our registers (or one register) into an elf_gregset_t. */
+
+void
+fill_gregset (elf_gregset_t *gregsetp, int regno)
+{
+ int regaddr, regi;
+ elf_greg_t *regp = *gregsetp;
+ void *src, *dst;
+
+ if (regno == -1)
+ {
+ memset (regp, 0, sizeof (elf_gregset_t));
+ for (regi = 0; regi < 32; regi++)
+ fill_gregset (gregsetp, regi);
+ fill_gregset (gregsetp, LO_REGNUM);
+ fill_gregset (gregsetp, HI_REGNUM);
+ fill_gregset (gregsetp, PC_REGNUM);
+ fill_gregset (gregsetp, BADVADDR_REGNUM);
+ fill_gregset (gregsetp, PS_REGNUM);
+ fill_gregset (gregsetp, CAUSE_REGNUM);
+
+ return;
+ }
+
+ if (regno < 32)
+ {
+ src = ®isters[REGISTER_BYTE (regno)];
+ dst = regp + regno + EF_REG0;
+ memcpy (dst, src, sizeof (elf_greg_t));
+ return;
+ }
+
+ regaddr = -1;
+ switch (regno)
+ {
+ case LO_REGNUM:
+ regaddr = EF_LO;
+ break;
+ case HI_REGNUM:
+ regaddr = EF_HI;
+ break;
+ case PC_REGNUM:
+ regaddr = EF_CP0_EPC;
+ break;
+ case BADVADDR_REGNUM:
+ regaddr = EF_CP0_BADVADDR;
+ break;
+ case PS_REGNUM:
+ regaddr = EF_CP0_STATUS;
+ break;
+ case CAUSE_REGNUM:
+ regaddr = EF_CP0_CAUSE;
+ break;
+ }
+
+ if (regaddr != -1)
+ {
+ src = ®isters[REGISTER_BYTE (regno)];
+ dst = regp + regaddr;
+ memcpy (dst, src, sizeof (elf_greg_t));
+ }
+}
+
+/* Likewise, unpack an elf_fpregset_t. */
+
+void
+supply_fpregset (elf_fpregset_t *fpregsetp)
+{
+ register int regi;
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
+
+ for (regi = 0; regi < 32; regi++)
+ supply_register (FP0_REGNUM + regi,
+ (char *)(*fpregsetp + regi));
+
+ supply_register (FCRCS_REGNUM, (char *)(*fpregsetp + 32));
+
+ /* FIXME: how can we supply FCRIR_REGNUM? The ABI doesn't tell us. */
+ supply_register (FCRIR_REGNUM, zerobuf);
+}
+
+/* Likewise, pack one or all floating point registers into an
+ elf_fpregset_t. */
+
+void
+fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
+{
+ char *from, *to;
+
+ if ((regno >= FP0_REGNUM) && (regno < FP0_REGNUM + 32))
+ {
+ from = (char *) ®isters[REGISTER_BYTE (regno)];
+ to = (char *) (*fpregsetp + regno - FP0_REGNUM);
+ memcpy (to, from, REGISTER_RAW_SIZE (regno - FP0_REGNUM));
+ }
+ else if (regno == FCRCS_REGNUM)
+ {
+ from = (char *) ®isters[REGISTER_BYTE (regno)];
+ to = (char *) (*fpregsetp + 32);
+ memcpy (to, from, REGISTER_RAW_SIZE (regno));
+ }
+ else if (regno == -1)
+ {
+ int regi;
+
+ for (regi = 0; regi < 32; regi++)
+ fill_fpregset (fpregsetp, FP0_REGNUM + regi);
+ fill_fpregset(fpregsetp, FCRCS_REGNUM);
+ }
+}
+
+/* Map gdb internal register number to ptrace ``address''.
+ These ``addresses'' are normally defined in <asm/ptrace.h>. */
+
+CORE_ADDR
+register_addr (int regno, CORE_ADDR blockend)
+{
+ int regaddr;
+
+ if (regno < 0 || regno >= NUM_REGS)
+ error ("Bogon register number %d.", regno);
+
+ if (regno < 32)
+ regaddr = regno;
+ else if ((regno >= FP0_REGNUM) && (regno < FP0_REGNUM + 32))
+ regaddr = FPR_BASE + (regno - FP0_REGNUM);
+ else if (regno == PC_REGNUM)
+ regaddr = PC;
+ else if (regno == CAUSE_REGNUM)
+ regaddr = CAUSE;
+ else if (regno == BADVADDR_REGNUM)
+ regaddr = BADVADDR;
+ else if (regno == LO_REGNUM)
+ regaddr = MMLO;
+ else if (regno == HI_REGNUM)
+ regaddr = MMHI;
+ else if (regno == FCRCS_REGNUM)
+ regaddr = FPC_CSR;
+ else if (regno == FCRIR_REGNUM)
+ regaddr = FPC_EIR;
+ else
+ error ("Unknowable register number %d.", regno);
+
+ return regaddr;
+}
+
+/* Use a local version of this function to get the correct types for
+ regsets, until multi-arch core support is ready. */
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+ int which, CORE_ADDR reg_addr)
+{
+ elf_gregset_t gregset;
+ elf_fpregset_t fpregset;
+
+ if (which == 0)
+ {
+ if (core_reg_size != sizeof (gregset))
+ {
+ warning ("wrong size gregset struct in core file");
+ }
+ else
+ {
+ memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset));
+ supply_gregset (&gregset);
+ }
+ }
+ else if (which == 2)
+ {
+ if (core_reg_size != sizeof (fpregset))
+ {
+ warning ("wrong size fpregset struct in core file");
+ }
+ else
+ {
+ memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset));
+ supply_fpregset (&fpregset);
+ }
+ }
+}
+
+/* Register that we are able to handle ELF file formats using standard
+ procfs "regset" structures. */
+
+static struct core_fns regset_core_fns =
+{
+ bfd_target_elf_flavour, /* core_flavour */
+ default_check_format, /* check_format */
+ default_core_sniffer, /* core_sniffer */
+ fetch_core_registers, /* core_read_registers */
+ NULL /* next */
+};
+
+/* Fetch (and possibly build) an appropriate link_map_offsets
+ structure for native Linux/MIPS targets using the struct offsets
+ defined in link.h (but without actual reference to that file).
+
+ This makes it possible to access Linux/MIPS shared libraries from a
+ GDB that was not built on an Linux/MIPS host (for cross debugging). */
+
+struct link_map_offsets *
+mips_linux_svr4_fetch_link_map_offsets (void)
+{
+ static struct link_map_offsets lmo;
+ static struct link_map_offsets *lmp = NULL;
+
+ if (lmp == NULL)
+ {
+ lmp = &lmo;
+
+ lmo.r_debug_size = 8; /* The actual size is 20 bytes, but
+ this is all we need. */
+ lmo.r_map_offset = 4;
+ lmo.r_map_size = 4;
+
+ lmo.link_map_size = 20;
+
+ lmo.l_addr_offset = 0;
+ lmo.l_addr_size = 4;
+
+ lmo.l_name_offset = 4;
+ lmo.l_name_size = 4;
+
+ lmo.l_next_offset = 12;
+ lmo.l_next_size = 4;
+
+ lmo.l_prev_offset = 16;
+ lmo.l_prev_size = 4;
+ }
+
+ return lmp;
+}
+
+void
+_initialize_mips_linux_tdep ()
+{
+ add_core_fns (®set_core_fns);
+}
projects / binutils-gdb.git / commitdiff