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Diffstat (limited to 'gdb/s390-nat.c')
| -rw-r--r-- | gdb/s390-nat.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/gdb/s390-nat.c b/gdb/s390-nat.c deleted file mode 100644 index 19e89238374..00000000000 --- a/gdb/s390-nat.c +++ /dev/null @@ -1,310 +0,0 @@ -/* S390 native-dependent code for GDB, the GNU debugger. - Copyright 2001 Free Software Foundation, Inc - Contributed by D.J. Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) - for IBM Deutschland Entwicklung GmbH, IBM Corporation. - 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 "tm.h" -#include "regcache.h" -#include <asm/ptrace.h> -#include <sys/ptrace.h> -#include <asm/processor.h> -#include <sys/procfs.h> -#include <sys/user.h> -#include <value.h> -#include <sys/ucontext.h> -#ifndef offsetof -#define offsetof(type,member) ((size_t) &((type *)0)->member) -#endif - - -int -s390_register_u_addr (int blockend, int regnum) -{ - int retval; - - if (regnum >= S390_GP0_REGNUM && regnum <= S390_GP_LAST_REGNUM) - retval = PT_GPR0 + ((regnum - S390_GP0_REGNUM) * S390_GPR_SIZE); - else if (regnum >= S390_PSWM_REGNUM && regnum <= S390_PC_REGNUM) - retval = PT_PSWMASK + ((regnum - S390_PSWM_REGNUM) * S390_PSW_MASK_SIZE); - else if (regnum == S390_FPC_REGNUM) - retval = PT_FPC; - else if (regnum >= S390_FP0_REGNUM && regnum <= S390_FPLAST_REGNUM) - retval = -#if CONFIG_ARCH_S390X - PT_FPR0 -#else - PT_FPR0_HI -#endif - + ((regnum - S390_FP0_REGNUM) * S390_FPR_SIZE); - else if (regnum >= S390_FIRST_ACR && regnum <= S390_LAST_ACR) - retval = PT_ACR0 + ((regnum - S390_FIRST_ACR) * S390_ACR_SIZE); - else if (regnum >= (S390_FIRST_CR + 9) && regnum <= (S390_FIRST_CR + 11)) - retval = PT_CR_9 + ((regnum - (S390_FIRST_CR + 9)) * S390_CR_SIZE); - else - { -#ifdef GDBSERVER - error ("s390_register_u_addr invalid regnum %s %d regnum=%d", - __FILE__, (int) __LINE__, regnum); -#else - internal_error (__FILE__, __LINE__, - "s390_register_u_addr invalid regnum regnum=%d", - regnum); -#endif - retval = 0; - } - return retval + blockend; -} - -#ifndef GDBSERVER -/* watch_areas are required if you put 2 or more watchpoints on the same - address or overlapping areas gdb will call us to delete the watchpoint - more than once when we try to delete them. - attempted reference counting to reduce the number of areas unfortunately - they didn't shrink when areas had to be split overlapping occurs. */ -struct watch_area; -typedef struct watch_area watch_area; -struct watch_area -{ - watch_area *next; - CORE_ADDR lo_addr; - CORE_ADDR hi_addr; -}; - -static watch_area *watch_base = NULL; -int watch_area_cnt = 0; -static CORE_ADDR watch_lo_addr = 0, watch_hi_addr = 0; - - - -CORE_ADDR -s390_stopped_by_watchpoint (int pid) -{ - per_lowcore_bits per_lowcore; - ptrace_area parea; - - parea.len = sizeof (per_lowcore); - parea.process_addr = (addr_t) & per_lowcore; - parea.kernel_addr = offsetof (struct user_regs_struct, per_info.lowcore); - ptrace (PTRACE_PEEKUSR_AREA, pid, &parea); - return ((per_lowcore.perc_storage_alteration == 1) && - (per_lowcore.perc_store_real_address == 0)); -} - - -void -s390_fix_watch_points (int pid) -{ - per_struct per_info; - ptrace_area parea; - - parea.len = sizeof (per_info); - parea.process_addr = (addr_t) & per_info; - parea.kernel_addr = PT_CR_9; - ptrace (PTRACE_PEEKUSR_AREA, pid, &parea); - /* The kernel automatically sets the psw for per depending */ - /* on whether the per control registers are set for event recording */ - /* & sets cr9 & cr10 appropriately also */ - if (watch_area_cnt) - { - per_info.control_regs.bits.em_storage_alteration = 1; - per_info.control_regs.bits.storage_alt_space_ctl = 1; - } - else - { - per_info.control_regs.bits.em_storage_alteration = 0; - per_info.control_regs.bits.storage_alt_space_ctl = 0; - } - per_info.starting_addr = watch_lo_addr; - per_info.ending_addr = watch_hi_addr; - ptrace (PTRACE_POKEUSR_AREA, pid, &parea); -} - -int -s390_insert_watchpoint (int pid, CORE_ADDR addr, int len, int rw) -{ - CORE_ADDR hi_addr = addr + len - 1; - watch_area *newarea = (watch_area *) xmalloc (sizeof (watch_area)); - - - if (newarea) - { - newarea->next = watch_base; - watch_base = newarea; - watch_lo_addr = min (watch_lo_addr, addr); - watch_hi_addr = max (watch_hi_addr, hi_addr); - newarea->lo_addr = addr; - newarea->hi_addr = hi_addr; - if (watch_area_cnt == 0) - { - watch_lo_addr = newarea->lo_addr; - watch_hi_addr = newarea->hi_addr; - } - watch_area_cnt++; - s390_fix_watch_points (pid); - } - return newarea ? 0 : -1; -} - - -int -s390_remove_watchpoint (int pid, CORE_ADDR addr, int len) -{ - watch_area *curr = watch_base, *prev, *matchCurr; - CORE_ADDR hi_addr = addr + len - 1; - CORE_ADDR watch_second_lo_addr = 0xffffffffUL, watch_second_hi_addr = 0; - int lo_addr_ref_cnt, hi_addr_ref_cnt; - prev = matchCurr = NULL; - lo_addr_ref_cnt = (addr == watch_lo_addr); - hi_addr_ref_cnt = (addr == watch_hi_addr); - while (curr) - { - if (matchCurr == NULL) - { - if (curr->lo_addr == addr && curr->hi_addr == hi_addr) - { - matchCurr = curr; - if (prev) - prev->next = curr->next; - else - watch_base = curr->next; - } - prev = curr; - } - if (lo_addr_ref_cnt) - { - if (watch_lo_addr == curr->lo_addr) - lo_addr_ref_cnt++; - if (curr->lo_addr > watch_lo_addr && - curr->lo_addr < watch_second_lo_addr) - watch_second_lo_addr = curr->lo_addr; - } - if (hi_addr_ref_cnt) - { - if (watch_hi_addr == curr->hi_addr) - hi_addr_ref_cnt++; - if (curr->hi_addr < watch_hi_addr && - curr->hi_addr > watch_second_hi_addr) - watch_second_hi_addr = curr->hi_addr; - } - curr = curr->next; - } - if (matchCurr) - { - xfree (matchCurr); - watch_area_cnt--; - if (watch_area_cnt) - { - if (lo_addr_ref_cnt == 2) - watch_lo_addr = watch_second_lo_addr; - if (hi_addr_ref_cnt == 2) - watch_hi_addr = watch_second_hi_addr; - } - else - { - watch_lo_addr = watch_hi_addr = 0; - } - s390_fix_watch_points (pid); - return 0; - } - else - { - fprintf_unfiltered (gdb_stderr, - "Attempt to remove nonexistent watchpoint in s390_remove_watchpoint\n"); - return -1; - } -} - -int -kernel_u_size (void) -{ - return sizeof (struct user); -} - - -#if (defined (S390_FP0_REGNUM) && defined (HAVE_FPREGSET_T) && defined(HAVE_SYS_PROCFS_H) && defined (HAVE_GREGSET_T)) -void -supply_gregset (gregset_t * gregsetp) -{ - int regi; - greg_t *gregp = (greg_t *) gregsetp; - - supply_register (S390_PSWM_REGNUM, (char *) &gregp[S390_PSWM_REGNUM]); - supply_register (S390_PC_REGNUM, (char *) &gregp[S390_PC_REGNUM]); - for (regi = 0; regi < S390_NUM_GPRS; regi++) - supply_register (S390_GP0_REGNUM + regi, - (char *) &gregp[S390_GP0_REGNUM + regi]); - for (regi = 0; regi < S390_NUM_ACRS; regi++) - supply_register (S390_FIRST_ACR + regi, - (char *) &gregp[S390_FIRST_ACR + regi]); - /* unfortunately this isn't in gregsetp */ - for (regi = 0; regi < S390_NUM_CRS; regi++) - supply_register (S390_FIRST_CR + regi, NULL); -} - - -void -supply_fpregset (fpregset_t * fpregsetp) -{ - int regi; - - supply_register (S390_FPC_REGNUM, (char *) &fpregsetp->fpc); - for (regi = 0; regi < S390_NUM_FPRS; regi++) - supply_register (S390_FP0_REGNUM + regi, (char *) &fpregsetp->fprs[regi]); - -} - -void -fill_gregset (gregset_t * gregsetp, int regno) -{ - greg_t *gregp = (greg_t *) gregsetp; - - if (regno >= S390_FIRST_CR && regno <= S390_LAST_CR) - supply_register (regno, NULL); - else if (regno != -1) - supply_register (regno, (char *) &gregp[regno]); - else - supply_gregset (gregsetp); -} - -/* Given a pointer to a floating point register set in /proc format - (fpregset_t *), update the register specified by REGNO from gdb's idea - of the current floating point register set. If REGNO is -1, update - them all. */ - -void -fill_fpregset (fpregset_t * fpregsetp, int regno) -{ - if (regno == -1) - supply_fpregset (fpregsetp); - else - supply_register (regno, - &((char *) fpregsetp)[REGISTER_BYTE (regno) - - REGISTER_BYTE (S390_FPC_REGNUM)]); -} - - -#else -#error "There are a few possibilities here" -#error "1) You aren't compiling for linux & don't need a core dumps to work." -#error "2) The header files sys/elf.h sys/user.h sys/ptrace.h & sys/procfs.h" -#error "libc files are inconsistent with linux/include/asm-s390/" -#error "3) you didn't do a completely clean build & delete config.cache." -#endif -#endif /* GDBSERVER */ |