old-cross-binutils/gdb/alpha-nat.c

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Changes to support alpha OSF/1 in native mode. * alpha-nat.c, alpha-tdep.c, config/alpha/alpha-osf1.mt, config/alpha/nm-alpha.h, config/alpha/tm-alpha.h, osfsolib.c: New files. * Makefile.in: Add new files and dependencies. * configure.in: Add alpha target. * config/alpha/alpha-osf1.mh (NATDEPFILES): Add osfsolib.o * config/alpha/alpha-osf1.mh (MH_CFLAGS): Remove, we can handle shared libraries now. * config/alpha/xm-alpha.h: Cleanup, get MAKEVA_* defines right. * defs.h (CORE_ADDR): Make its type overridable via CORE_ADDR_TYPE, provide `unsigned int' default. * breakpoint.c (breakpoint_auto_delete): Delete only if we really stopped for the breakpoint. * stabsread.c, stabsread.h (define_symbol): Change valu parameter to a CORE_ADDR. * stabsread.c (read_range_type): Handle the case where the lower bound overflows and the upper doesn't and the range is legal. * infrun.c (resume): Do not step a breakpoint instruction if CANNOT_STEP_BREAKPOINT is defined. * inferior.h (CALL_DUMMY_LOCATION): New variant AT_ENTRY_POINT. Now that we have the bp_call_dummy breakpoint the call dummy code is no longer needed. PUSH_DUMMY_FRAME, PUSH_ARGUMENTS and FIX_CALL_DUMMY can be used to set up everything for the dummy. The breakpoint for the dummy is set at the entry point and thats it. * blockframe.c (inside_entry_file, inside_entry_func): Do not stop backtraces if pc is in the call dummy at the entry point. * infcmd.c (run_stack_dummy): Handle AT_ENTRY_POINT case. Use the expected breakpoint pc when setting up the frame for set_momentary_breakpoint. * symfile.c (entry_point_address): New function for AT_ENTRY_POINT support. * valops.c (call_function_by_hand): Handle AT_ENTRY_POINT case.
1993-10-05 19:44:57 +00:00
/* Low level Alpha interface, for GDB when running native.
* README: Add note about SPARCworks cc release 3.0 and higher. Add procfs support for Alpha OSF/1-2.x. * config/alpha/nm-osf.h: Renamed from nm-alpha.h, generic OSF/1 native support. * config/alpha/alpha-osf1.mh (NAT_FILE): Changed accordingly. (MUNCH_DEFINE): Removed. * config/alpha/alpha-osf2.mh, config/alpha/nm-osf2.h: New files for procfs support. * configure.in (alpha-dec-osf*): Use alpha-osf2.mh for OSF/1 release 2.x and higher, else alpha-osf1.mh, as the procfs support in release 1.x is incomplete. * Makefile.in (ALLCONFIG): Add config/alpha/alpha-osf2.mh. * alpha-nat.c (supply_gregset, fill_gregset, supply_fpgregset, fill_fpgregset): New routines for procfs support. * inftarg.c (_initialize_inftarg): Don't add ptrace support if we have an optional procfs and /proc is accessible. * procfs.c: Include sys/fault.h and sys/syscall.h before including sys/procfs.h. (unconditionally_kill_inferior): If PROCFS_NEED_PIOCSSIG_FOR_KILL is defined, additionally perform a PIOCSSIG to really terminate the inferior. (create_procinfo): Always return a result. (create_procinfo, do_attach): Don't trace T_IFAULT faults if PROCFS_DONT_TRACE_IFAULT is defined. (procfs_init_inferior): Use START_INFERIOR_TRAPS_EXPECTED as argument to startup_inferior if it is defined. (proc_set_exec_trap): If PIOCSSPCACT is defined, use it instead of tracing exits from exec system calls. Needed for the user level loader under Alpha OSF/1. (do_detach): Clear any pending signal if we want to detach from a process without a signal. (set_proc_siginfo): If PROCFS_DONT_PIOCSSIG_CURSIG is defined, don't issue a PIOCSSIG if pr_cursig already contains the signal we intend to set. (info_proc_signals): If PROCFS_SIGPEND_OFFSET is defined, the pending signals are numbered from 1 instead of 0. (info_proc_mappings): Increase size of output format for addresses if BFD_HOST_64_BIT is defined. (procfs_stop): Renamed from child_stop. (_initialize_procfs): Don't add procfs support if we have an optional procfs and /proc is not accessible.
1995-01-12 18:12:04 +00:00
Copyright 1993, 1995 Free Software Foundation, Inc.
Changes to support alpha OSF/1 in native mode. * alpha-nat.c, alpha-tdep.c, config/alpha/alpha-osf1.mt, config/alpha/nm-alpha.h, config/alpha/tm-alpha.h, osfsolib.c: New files. * Makefile.in: Add new files and dependencies. * configure.in: Add alpha target. * config/alpha/alpha-osf1.mh (NATDEPFILES): Add osfsolib.o * config/alpha/alpha-osf1.mh (MH_CFLAGS): Remove, we can handle shared libraries now. * config/alpha/xm-alpha.h: Cleanup, get MAKEVA_* defines right. * defs.h (CORE_ADDR): Make its type overridable via CORE_ADDR_TYPE, provide `unsigned int' default. * breakpoint.c (breakpoint_auto_delete): Delete only if we really stopped for the breakpoint. * stabsread.c, stabsread.h (define_symbol): Change valu parameter to a CORE_ADDR. * stabsread.c (read_range_type): Handle the case where the lower bound overflows and the upper doesn't and the range is legal. * infrun.c (resume): Do not step a breakpoint instruction if CANNOT_STEP_BREAKPOINT is defined. * inferior.h (CALL_DUMMY_LOCATION): New variant AT_ENTRY_POINT. Now that we have the bp_call_dummy breakpoint the call dummy code is no longer needed. PUSH_DUMMY_FRAME, PUSH_ARGUMENTS and FIX_CALL_DUMMY can be used to set up everything for the dummy. The breakpoint for the dummy is set at the entry point and thats it. * blockframe.c (inside_entry_file, inside_entry_func): Do not stop backtraces if pc is in the call dummy at the entry point. * infcmd.c (run_stack_dummy): Handle AT_ENTRY_POINT case. Use the expected breakpoint pc when setting up the frame for set_momentary_breakpoint. * symfile.c (entry_point_address): New function for AT_ENTRY_POINT support. * valops.c (call_function_by_hand): Handle AT_ENTRY_POINT case.
1993-10-05 19:44:57 +00:00
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include <sys/ptrace.h>
#include <machine/reg.h>
/* Size of elements in jmpbuf */
#define JB_ELEMENT_SIZE 8
/* The definition for JB_PC in machine/reg.h is wrong.
And we can't get at the correct definition in setjmp.h as it is
not always available (eg. if _POSIX_SOURCE is defined which is the
default). As the defintion is unlikely to change (see comment
in <setjmp.h>, define the correct value here. */
#undef JB_PC
#define JB_PC 2
/* 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;
{
CORE_ADDR jb_addr;
char raw_buffer[MAX_REGISTER_RAW_SIZE];
jb_addr = read_register(A0_REGNUM);
if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, raw_buffer,
sizeof(CORE_ADDR)))
return 0;
*pc = extract_address (raw_buffer, sizeof(CORE_ADDR));
return 1;
}
/* Extract the register values out of the core file and store
them where `read_register' will find them.
CORE_REG_SECT points to the register values themselves, read into memory.
CORE_REG_SIZE is the size of that area.
WHICH says which set of registers we are handling (0 = int, 2 = float
on machines where they are discontiguous).
REG_ADDR is the offset from u.u_ar0 to the register values relative to
core_reg_sect. This is used with old-fashioned core files to
locate the registers in a large upage-plus-stack ".reg" section.
Original upage address X is at location core_reg_sect+x+reg_addr.
*/
void
fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
char *core_reg_sect;
unsigned core_reg_size;
int which;
unsigned reg_addr;
{
register int regno;
register int addr;
int bad_reg = -1;
/* Table to map a gdb regnum to an index in the core register section.
The floating point register values are garbage in OSF/1.2 core files. */
static int core_reg_mapping[NUM_REGS] =
{
#define EFL (EF_SIZE / 8)
EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9,
EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1,
EFL+0, EFL+1, EFL+2, EFL+3, EFL+4, EFL+5, EFL+6, EFL+7,
EFL+8, EFL+9, EFL+10, EFL+11, EFL+12, EFL+13, EFL+14, EFL+15,
EFL+16, EFL+17, EFL+18, EFL+19, EFL+20, EFL+21, EFL+22, EFL+23,
EFL+24, EFL+25, EFL+26, EFL+27, EFL+28, EFL+29, EFL+30, EFL+31,
EF_PC, -1
};
static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
for (regno = 0; regno < NUM_REGS; regno++)
{
if (CANNOT_FETCH_REGISTER (regno))
{
supply_register (regno, zerobuf);
continue;
}
addr = 8 * core_reg_mapping[regno];
if (addr < 0 || addr >= core_reg_size)
{
if (bad_reg < 0)
bad_reg = regno;
}
else
{
supply_register (regno, core_reg_sect + addr);
}
}
if (bad_reg >= 0)
{
error ("Register %s not found in core file.", reg_names[bad_reg]);
}
}
/* Map gdb internal register number to a ptrace ``address''.
These ``addresses'' are defined in <sys/ptrace.h> */
#define REGISTER_PTRACE_ADDR(regno) \
(regno < FP0_REGNUM ? GPR_BASE + (regno) \
: regno == PC_REGNUM ? PC \
: regno >= FP0_REGNUM ? FPR_BASE + ((regno) - FP0_REGNUM) \
: 0)
/* Return the ptrace ``address'' of register REGNO. */
unsigned int
register_addr (regno, blockend)
int regno;
int blockend;
{
return REGISTER_PTRACE_ADDR (regno);
}
* README: Add note about SPARCworks cc release 3.0 and higher. Add procfs support for Alpha OSF/1-2.x. * config/alpha/nm-osf.h: Renamed from nm-alpha.h, generic OSF/1 native support. * config/alpha/alpha-osf1.mh (NAT_FILE): Changed accordingly. (MUNCH_DEFINE): Removed. * config/alpha/alpha-osf2.mh, config/alpha/nm-osf2.h: New files for procfs support. * configure.in (alpha-dec-osf*): Use alpha-osf2.mh for OSF/1 release 2.x and higher, else alpha-osf1.mh, as the procfs support in release 1.x is incomplete. * Makefile.in (ALLCONFIG): Add config/alpha/alpha-osf2.mh. * alpha-nat.c (supply_gregset, fill_gregset, supply_fpgregset, fill_fpgregset): New routines for procfs support. * inftarg.c (_initialize_inftarg): Don't add ptrace support if we have an optional procfs and /proc is accessible. * procfs.c: Include sys/fault.h and sys/syscall.h before including sys/procfs.h. (unconditionally_kill_inferior): If PROCFS_NEED_PIOCSSIG_FOR_KILL is defined, additionally perform a PIOCSSIG to really terminate the inferior. (create_procinfo): Always return a result. (create_procinfo, do_attach): Don't trace T_IFAULT faults if PROCFS_DONT_TRACE_IFAULT is defined. (procfs_init_inferior): Use START_INFERIOR_TRAPS_EXPECTED as argument to startup_inferior if it is defined. (proc_set_exec_trap): If PIOCSSPCACT is defined, use it instead of tracing exits from exec system calls. Needed for the user level loader under Alpha OSF/1. (do_detach): Clear any pending signal if we want to detach from a process without a signal. (set_proc_siginfo): If PROCFS_DONT_PIOCSSIG_CURSIG is defined, don't issue a PIOCSSIG if pr_cursig already contains the signal we intend to set. (info_proc_signals): If PROCFS_SIGPEND_OFFSET is defined, the pending signals are numbered from 1 instead of 0. (info_proc_mappings): Increase size of output format for addresses if BFD_HOST_64_BIT is defined. (procfs_stop): Renamed from child_stop. (_initialize_procfs): Don't add procfs support if we have an optional procfs and /proc is not accessible.
1995-01-12 18:12:04 +00:00
#ifdef USE_PROC_FS
#include <sys/procfs.h>
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*/
void
supply_gregset (gregsetp)
gregset_t *gregsetp;
{
register int regi;
register long *regp = gregsetp->regs;
for (regi = 0; regi < 31; regi++)
supply_register (regi, (char *)(regp + regi));
supply_register (PC_REGNUM, (char *)(regp + 31));
}
void
fill_gregset (gregsetp, regno)
gregset_t *gregsetp;
int regno;
{
int regi;
register long *regp = gregsetp->regs;
for (regi = 0; regi < 31; regi++)
if ((regno == -1) || (regno == regi))
*(regp + regi) = *(long *) &registers[REGISTER_BYTE (regi)];
if ((regno == -1) || (regno == PC_REGNUM))
*(regp + 31) = *(long *) &registers[REGISTER_BYTE (PC_REGNUM)];
}
/*
* Now we do the same thing for floating-point registers.
* Again, see the comments in m68k-tdep.c.
*/
void
supply_fpregset (fpregsetp)
fpregset_t *fpregsetp;
{
register int regi;
register long *regp = fpregsetp->regs;
for (regi = 0; regi < 32; regi++)
supply_register (regi + FP0_REGNUM, (char *)(regp + regi));
}
void
fill_fpregset (fpregsetp, regno)
fpregset_t *fpregsetp;
int regno;
{
int regi;
register long *regp = fpregsetp->regs;
for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
{
if ((regno == -1) || (regno == regi))
{
*(regp + regi - FP0_REGNUM) =
*(long *) &registers[REGISTER_BYTE (regi)];
}
}
}
#endif