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Diffstat (limited to 'gdb/hppa-linux-nat.c')
| -rw-r--r-- | gdb/hppa-linux-nat.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/gdb/hppa-linux-nat.c b/gdb/hppa-linux-nat.c new file mode 100644 index 0000000..e633c06 --- /dev/null +++ b/gdb/hppa-linux-nat.c @@ -0,0 +1,277 @@ +/* Functions specific to running gdb native on HPPA running Linux. + Copyright 2004 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 "regcache.h" +#include "gdb_string.h" + +#include <sys/procfs.h> +#include <string.h> +#include <asm/offsets.h> + +/* Prototypes for supply_gregset etc. */ +#include "gregset.h" + +/* These must match the order of the register names. + + Some sort of lookup table is needed because the offsets associated + with the registers are all over the board. */ + +static const int u_offsets[] = + { + /* general registers */ + -1, + PT_GR1, + PT_GR2, + PT_GR3, + PT_GR4, + PT_GR5, + PT_GR6, + PT_GR7, + PT_GR8, + PT_GR9, + PT_GR10, + PT_GR11, + PT_GR12, + PT_GR13, + PT_GR14, + PT_GR15, + PT_GR16, + PT_GR17, + PT_GR18, + PT_GR19, + PT_GR20, + PT_GR21, + PT_GR22, + PT_GR23, + PT_GR24, + PT_GR25, + PT_GR26, + PT_GR27, + PT_GR28, + PT_GR29, + PT_GR30, + PT_GR31, + + PT_SAR, + PT_IAOQ0, + PT_IASQ0, + PT_IAOQ1, + PT_IASQ1, + -1, /* eiem */ + PT_IIR, + PT_ISR, + PT_IOR, + PT_PSW, + -1, /* goto */ + + PT_SR4, + PT_SR0, + PT_SR1, + PT_SR2, + PT_SR3, + PT_SR5, + PT_SR6, + PT_SR7, + + -1, /* cr0 */ + -1, /* pid0 */ + -1, /* pid1 */ + -1, /* ccr */ + -1, /* pid2 */ + -1, /* pid3 */ + -1, /* cr24 */ + -1, /* cr25 */ + -1, /* cr26 */ + PT_CR27, + -1, /* cr28 */ + -1, /* cr29 */ + -1, /* cr30 */ + + /* Floating point regs. */ + PT_FR0, PT_FR0 + 4, + PT_FR1, PT_FR1 + 4, + PT_FR2, PT_FR2 + 4, + PT_FR3, PT_FR3 + 4, + PT_FR4, PT_FR4 + 4, + PT_FR5, PT_FR5 + 4, + PT_FR6, PT_FR6 + 4, + PT_FR7, PT_FR7 + 4, + PT_FR8, PT_FR8 + 4, + PT_FR9, PT_FR9 + 4, + PT_FR10, PT_FR10 + 4, + PT_FR11, PT_FR11 + 4, + PT_FR12, PT_FR12 + 4, + PT_FR13, PT_FR13 + 4, + PT_FR14, PT_FR14 + 4, + PT_FR15, PT_FR15 + 4, + PT_FR16, PT_FR16 + 4, + PT_FR17, PT_FR17 + 4, + PT_FR18, PT_FR18 + 4, + PT_FR19, PT_FR19 + 4, + PT_FR20, PT_FR20 + 4, + PT_FR21, PT_FR21 + 4, + PT_FR22, PT_FR22 + 4, + PT_FR23, PT_FR23 + 4, + PT_FR24, PT_FR24 + 4, + PT_FR25, PT_FR25 + 4, + PT_FR26, PT_FR26 + 4, + PT_FR27, PT_FR27 + 4, + PT_FR28, PT_FR28 + 4, + PT_FR29, PT_FR29 + 4, + PT_FR30, PT_FR30 + 4, + PT_FR31, PT_FR31 + 4, + }; + +CORE_ADDR +register_addr (int regno, CORE_ADDR blockend) +{ + CORE_ADDR addr; + + if ((unsigned) regno >= NUM_REGS) + error ("Invalid register number %d.", regno); + + if (u_offsets[regno] == -1) + addr = 0; + else + { + addr = (CORE_ADDR) u_offsets[regno]; + } + + return addr; +} + +/* + * Registers saved in a coredump: + * gr0..gr31 + * sr0..sr7 + * iaoq0..iaoq1 + * iasq0..iasq1 + * sar, iir, isr, ior, ipsw + * cr0, cr24..cr31 + * cr8,9,12,13 + * cr10, cr15 + */ +#define GR_REGNUM(_n) (R0_REGNUM+_n) +#define TR_REGNUM(_n) (TR0_REGNUM+_n) +static const int greg_map[] = + { + GR_REGNUM(0), GR_REGNUM(1), GR_REGNUM(2), GR_REGNUM(3), + GR_REGNUM(4), GR_REGNUM(5), GR_REGNUM(6), GR_REGNUM(7), + GR_REGNUM(8), GR_REGNUM(9), GR_REGNUM(10), GR_REGNUM(11), + GR_REGNUM(12), GR_REGNUM(13), GR_REGNUM(14), GR_REGNUM(15), + GR_REGNUM(16), GR_REGNUM(17), GR_REGNUM(18), GR_REGNUM(19), + GR_REGNUM(20), GR_REGNUM(21), GR_REGNUM(22), GR_REGNUM(23), + GR_REGNUM(24), GR_REGNUM(25), GR_REGNUM(26), GR_REGNUM(27), + GR_REGNUM(28), GR_REGNUM(29), GR_REGNUM(30), GR_REGNUM(31), + + SR4_REGNUM+1, SR4_REGNUM+2, SR4_REGNUM+3, SR4_REGNUM+4, + SR4_REGNUM, SR4_REGNUM+5, SR4_REGNUM+6, SR4_REGNUM+7, + + PCOQ_HEAD_REGNUM, PCOQ_TAIL_REGNUM, + PCSQ_HEAD_REGNUM, PCSQ_TAIL_REGNUM, + + SAR_REGNUM, IIR_REGNUM, ISR_REGNUM, IOR_REGNUM, + IPSW_REGNUM, RCR_REGNUM, + + TR_REGNUM(0), TR_REGNUM(1), TR_REGNUM(2), TR_REGNUM(3), + TR_REGNUM(4), TR_REGNUM(5), TR_REGNUM(6), TR_REGNUM(7), + + PID0_REGNUM, PID1_REGNUM, PID2_REGNUM, PID3_REGNUM, + CCR_REGNUM, EIEM_REGNUM, + }; + +void +supply_gregset (gdb_gregset_t *gregsetp) +{ + int i; + greg_t *regp = (elf_greg_t *) gregsetp; + + for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++) + { + int regno = greg_map[i]; + int size = register_size (current_gdbarch, regno); + /* When running a 64 bit kernel, a greg_t may be larger than the + actual register, so just pick off the LS bits of big-endian word. */ + supply_register (regno, ((char *) (regp + 1)) - size); + } +} + +void +fill_gregset (gdb_gregset_t *gregsetp, int regno) +{ + int i; + greg_t *regp = (greg_t *) gregsetp; + + memset (gregsetp, 0, sizeof (*gregsetp)); + for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++) + { + int regi = greg_map[i]; + + if (regno == -1 || regi == regno) + { + int rawsize = register_size (current_gdbarch, regi); + regcache_collect (regi, ((char *) (regp + 1)) - rawsize); + } + } +} + +/* Given a pointer to a floating point register set in /proc format + (fpregset_t *), unpack the register contents and supply them as gdb's + idea of the current floating point register values. */ + +void +supply_fpregset (gdb_fpregset_t *fpregsetp) +{ + register int regi; + char *from; + + for (regi = 0; regi <= 31; regi++) + { + from = (char *) &((*fpregsetp)[regi]); + supply_register (2*regi + HPPA_FP0_REGNUM, from); + supply_register (2*regi + HPPA_FP0_REGNUM + 1, from + 4); + } +} + +/* 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 (gdb_fpregset_t *fpregsetp, int regno) +{ + int i; + + for (i = 0; i < NUM_REGS; i++) + { + if (regno == -1 || regno == i) + { + /* Gross. fpregset_t is double, registers[x] has single + precision reg. */ + char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]); + if ((i - HPPA_FP0_REGNUM) & 1) + to += 4; + regcache_collect (i, to); + } + } +} |