diff options
Diffstat (limited to 'gdb/mipsm3-nat.c')
| -rw-r--r-- | gdb/mipsm3-nat.c | 772 |
1 files changed, 386 insertions, 386 deletions
diff --git a/gdb/mipsm3-nat.c b/gdb/mipsm3-nat.c index 22f947f9db2..f1fd8590ce8 100644 --- a/gdb/mipsm3-nat.c +++ b/gdb/mipsm3-nat.c @@ -1,386 +1,386 @@ -/* Definitions to make GDB run on a mips box under Mach 3.0 - Copyright 1992, 1993, 1998, 2000, 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. */ - -/* Mach specific routines for little endian mips (e.g. pmax) - * running Mach 3.0 - * - * Author: Jukka Virtanen <jtv@hut.fi> - */ - -#include "defs.h" -#include "inferior.h" -#include "regcache.h" - -#include <stdio.h> - -#include <mach.h> -#include <mach/message.h> -#include <mach/exception.h> -#include <mach_error.h> - -/* Find offsets to thread states at compile time. - * If your compiler does not grok this, check the hand coded - * offsets and use them. - */ - -#if 1 - -#define REG_OFFSET(reg) (int)(&((struct mips_thread_state *)0)->reg) -#define CREG_OFFSET(reg) (int)(&((struct mips_float_state *)0)->reg) -#define EREG_OFFSET(reg) (int)(&((struct mips_exc_state *)0)->reg) - -/* at reg_offset[i] is the offset to the mips_thread_state - * location where the gdb registers[i] is stored. - * - * -1 means mach does not save it anywhere. - */ -static int reg_offset[] = -{ - /* zero at v0 v1 */ - -1, REG_OFFSET (r1), REG_OFFSET (r2), REG_OFFSET (r3), - - /* a0 a1 a2 a3 */ - REG_OFFSET (r4), REG_OFFSET (r5), REG_OFFSET (r6), REG_OFFSET (r7), - - /* t0 t1 t2 t3 */ - REG_OFFSET (r8), REG_OFFSET (r9), REG_OFFSET (r10), REG_OFFSET (r11), - - /* t4 t5 t6 t7 */ - REG_OFFSET (r12), REG_OFFSET (r13), REG_OFFSET (r14), REG_OFFSET (r15), - - /* s0 s1 s2 s3 */ - REG_OFFSET (r16), REG_OFFSET (r17), REG_OFFSET (r18), REG_OFFSET (r19), - - /* s4 s5 s6 s7 */ - REG_OFFSET (r20), REG_OFFSET (r21), REG_OFFSET (r22), REG_OFFSET (r23), - - /* t8 t9 k0 k1 */ - REG_OFFSET (r24), REG_OFFSET (r25), REG_OFFSET (r26), REG_OFFSET (r27), - - /* gp sp s8(30) == fp(72) ra */ - REG_OFFSET (r28), REG_OFFSET (r29), REG_OFFSET (r30), REG_OFFSET (r31), - - /* sr(32) PS_REGNUM */ - EREG_OFFSET (coproc_state), - - /* lo(33) hi(34) */ - REG_OFFSET (mdlo), REG_OFFSET (mdhi), - - /* bad(35) cause(36) pc(37) */ - EREG_OFFSET (address), EREG_OFFSET (cause), REG_OFFSET (pc), - - /* f0(38) f1(39) f2(40) f3(41) */ - CREG_OFFSET (r0), CREG_OFFSET (r1), CREG_OFFSET (r2), CREG_OFFSET (r3), - CREG_OFFSET (r4), CREG_OFFSET (r5), CREG_OFFSET (r6), CREG_OFFSET (r7), - CREG_OFFSET (r8), CREG_OFFSET (r9), CREG_OFFSET (r10), CREG_OFFSET (r11), - CREG_OFFSET (r12), CREG_OFFSET (r13), CREG_OFFSET (r14), CREG_OFFSET (r15), - CREG_OFFSET (r16), CREG_OFFSET (r17), CREG_OFFSET (r18), CREG_OFFSET (r19), - CREG_OFFSET (r20), CREG_OFFSET (r21), CREG_OFFSET (r22), CREG_OFFSET (r23), - CREG_OFFSET (r24), CREG_OFFSET (r25), CREG_OFFSET (r26), CREG_OFFSET (r27), - CREG_OFFSET (r28), CREG_OFFSET (r29), CREG_OFFSET (r30), CREG_OFFSET (r31), - - /* fsr(70) fir(71) fp(72) == s8(30) */ - CREG_OFFSET (csr), CREG_OFFSET (esr), REG_OFFSET (r30) -}; -#else -/* If the compiler does not grok the above defines */ -static int reg_offset[] = -{ -/* mach_thread_state offsets: */ - -1, 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, - 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, -/*sr, lo, hi,addr,cause,pc */ - 8, 124, 128, 4, 0, 132, -/* mach_float_state offsets: */ - 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, - 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, -/*fsr,fir */ - 128, 132, -/* FP_REGNUM pseudo maps to s8==r30 in mach_thread_state */ - 116 -}; -#endif - -/* Fetch COUNT contiguous registers from thread STATE starting from REGNUM - * Caller knows that the regs handled in one transaction are of same size. - */ -#define FETCH_REGS(state, regnum, count) \ - memcpy (&deprecated_registers[REGISTER_BYTE (regnum)], \ - (char *)state+reg_offset[ regnum ], \ - count*REGISTER_SIZE) - -/* Store COUNT contiguous registers to thread STATE starting from REGNUM */ -#define STORE_REGS(state, regnum, count) \ - memcpy ((char *)state+reg_offset[ regnum ], \ - &deprecated_registers[REGISTER_BYTE (regnum)], \ - count*REGISTER_SIZE) - -#define REGS_ALL -1 -#define REGS_NORMAL 1 -#define REGS_EXC 2 -#define REGS_COP1 4 - -/* Hardware regs that matches FP_REGNUM */ -#define MACH_FP_REGNUM 30 - -/* Fech thread's registers. if regno == -1, fetch all regs */ -void -fetch_inferior_registers (int regno) -{ - kern_return_t ret; - - thread_state_data_t state; - struct mips_exc_state exc_state; - - int stateCnt = MIPS_THREAD_STATE_COUNT; - - int which_regs = 0; /* A bit mask */ - - if (!MACH_PORT_VALID (current_thread)) - error ("fetch inferior registers: Invalid thread"); - - if (regno < -1 || regno >= NUM_REGS) - error ("invalid register %d supplied to fetch_inferior_registers", regno); - - if (regno == -1) - which_regs = REGS_ALL; - else if (regno == ZERO_REGNUM) - { - int zero = 0; - supply_register (ZERO_REGNUM, &zero); - return; - } - else if ((ZERO_REGNUM < regno && regno < PS_REGNUM) - || regno == FP_REGNUM - || regno == LO_REGNUM - || regno == HI_REGNUM - || regno == PC_REGNUM) - which_regs = REGS_NORMAL; - else if (FP0_REGNUM <= regno && regno <= FCRIR_REGNUM) - which_regs = REGS_COP1 | REGS_EXC; - else - which_regs = REGS_EXC; - - /* fetch regs saved to mips_thread_state */ - if (which_regs & REGS_NORMAL) - { - ret = thread_get_state (current_thread, - MIPS_THREAD_STATE, - state, - &stateCnt); - CHK ("fetch inferior registers: thread_get_state", ret); - - if (which_regs == REGS_NORMAL) - { - /* Fetch also FP_REGNUM if fetching MACH_FP_REGNUM and vice versa */ - if (regno == MACH_FP_REGNUM || regno == FP_REGNUM) - { - supply_register (FP_REGNUM, - (char *) state + reg_offset[MACH_FP_REGNUM]); - supply_register (MACH_FP_REGNUM, - (char *) state + reg_offset[MACH_FP_REGNUM]); - } - else - supply_register (regno, - (char *) state + reg_offset[regno]); - return; - } - - /* ZERO_REGNUM is always zero */ - *(int *) deprecated_registers = 0; - - /* Copy thread saved regs 1..31 to gdb's reg value array - * Luckily, they are contiquous - */ - FETCH_REGS (state, 1, 31); - - /* Copy mdlo and mdhi */ - FETCH_REGS (state, LO_REGNUM, 2); - - /* Copy PC */ - FETCH_REGS (state, PC_REGNUM, 1); - - /* Mach 3.0 saves FP to MACH_FP_REGNUM. - * For some reason gdb wants to assign a pseudo register for it. - */ - FETCH_REGS (state, FP_REGNUM, 1); - } - - /* Read exc state. Also read if need to fetch floats */ - if (which_regs & REGS_EXC) - { - stateCnt = MIPS_EXC_STATE_COUNT; - ret = thread_get_state (current_thread, - MIPS_EXC_STATE, - (thread_state_t) & exc_state, - &stateCnt); - CHK ("fetch inferior regs (exc): thread_get_state", ret); - - /* We need to fetch exc_state to see if the floating - * state is valid for the thread. - */ - - /* cproc_state: Which coprocessors the thread uses */ - supply_register (PS_REGNUM, - (char *) &exc_state + reg_offset[PS_REGNUM]); - - if (which_regs == REGS_EXC || which_regs == REGS_ALL) - { - supply_register (BADVADDR_REGNUM, - (char *) &exc_state + reg_offset[BADVADDR_REGNUM]); - - supply_register (CAUSE_REGNUM, - (char *) &exc_state + reg_offset[CAUSE_REGNUM]); - if (which_regs == REGS_EXC) - return; - } - } - - - if (which_regs & REGS_COP1) - { - /* If the thread does not have saved COPROC1, set regs to zero */ - - if (!(exc_state.coproc_state & MIPS_STATUS_USE_COP1)) - bzero (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], - sizeof (struct mips_float_state)); - else - { - stateCnt = MIPS_FLOAT_STATE_COUNT; - ret = thread_get_state (current_thread, - MIPS_FLOAT_STATE, - state, - &stateCnt); - CHK ("fetch inferior regs (floats): thread_get_state", ret); - - if (regno != -1) - { - supply_register (regno, - (char *) state + reg_offset[regno]); - return; - } - - FETCH_REGS (state, FP0_REGNUM, 34); - } - } - - /* All registers are valid, if not returned yet */ - deprecated_registers_fetched (); -} - -/* Store gdb's view of registers to the thread. - * All registers are always valid when entering here. - * @@ ahem, maybe that is too strict, we could validate the necessary ones - * here. - * - * Hmm. It seems that gdb set $reg=value command first reads everything, - * then sets the reg and then stores everything. -> we must make sure - * that the immutable registers are not changed by reading them first. - */ - -void -store_inferior_registers (register int regno) -{ - thread_state_data_t state; - kern_return_t ret; - - if (!MACH_PORT_VALID (current_thread)) - error ("store inferior registers: Invalid thread"); - - /* Check for read only regs. - * @@ If some of these is can be changed, fix this - */ - if (regno == ZERO_REGNUM || - regno == PS_REGNUM || - regno == BADVADDR_REGNUM || - regno == CAUSE_REGNUM || - regno == FCRIR_REGNUM) - { - message ("You can not alter read-only register `%s'", - REGISTER_NAME (regno)); - fetch_inferior_registers (regno); - return; - } - - if (regno == -1) - { - /* Don't allow these to change */ - - /* ZERO_REGNUM */ - *(int *) deprecated_registers = 0; - - fetch_inferior_registers (PS_REGNUM); - fetch_inferior_registers (BADVADDR_REGNUM); - fetch_inferior_registers (CAUSE_REGNUM); - fetch_inferior_registers (FCRIR_REGNUM); - } - - if (regno == -1 || (ZERO_REGNUM < regno && regno <= PC_REGNUM)) - { -#if 1 - /* Mach 3.0 saves thread's FP to MACH_FP_REGNUM. - * GDB wants assigns a pseudo register FP_REGNUM for frame pointer. - * - * @@@ Here I assume (!) that gdb's FP has the value that - * should go to threads frame pointer. If not true, this - * fails badly!!!!! - */ - memcpy (&deprecated_registers[REGISTER_BYTE (MACH_FP_REGNUM)], - &deprecated_registers[REGISTER_BYTE (FP_REGNUM)], - REGISTER_RAW_SIZE (FP_REGNUM)); -#endif - - /* Save gdb's regs 1..31 to thread saved regs 1..31 - * Luckily, they are contiquous - */ - STORE_REGS (state, 1, 31); - - /* Save mdlo, mdhi */ - STORE_REGS (state, LO_REGNUM, 2); - - /* Save PC */ - STORE_REGS (state, PC_REGNUM, 1); - - ret = thread_set_state (current_thread, - MIPS_THREAD_STATE, - state, - MIPS_FLOAT_STATE_COUNT); - CHK ("store inferior regs : thread_set_state", ret); - } - - if (regno == -1 || regno >= FP0_REGNUM) - { - /* If thread has floating state, save it */ - if (read_register (PS_REGNUM) & MIPS_STATUS_USE_COP1) - { - /* Do NOT save FCRIR_REGNUM */ - STORE_REGS (state, FP0_REGNUM, 33); - - ret = thread_set_state (current_thread, - MIPS_FLOAT_STATE, - state, - MIPS_FLOAT_STATE_COUNT); - CHK ("store inferior registers (floats): thread_set_state", ret); - } - else if (regno != -1) - message - ("Thread does not use floating point unit, floating regs not saved"); - } -} +// OBSOLETE /* Definitions to make GDB run on a mips box under Mach 3.0 +// OBSOLETE Copyright 1992, 1993, 1998, 2000, 2001 Free Software Foundation, Inc. +// OBSOLETE +// OBSOLETE This file is part of GDB. +// OBSOLETE +// OBSOLETE This program is free software; you can redistribute it and/or modify +// OBSOLETE it under the terms of the GNU General Public License as published by +// OBSOLETE the Free Software Foundation; either version 2 of the License, or +// OBSOLETE (at your option) any later version. +// OBSOLETE +// OBSOLETE This program is distributed in the hope that it will be useful, +// OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of +// OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// OBSOLETE GNU General Public License for more details. +// OBSOLETE +// OBSOLETE You should have received a copy of the GNU General Public License +// OBSOLETE along with this program; if not, write to the Free Software +// OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, +// OBSOLETE Boston, MA 02111-1307, USA. */ +// OBSOLETE +// OBSOLETE /* Mach specific routines for little endian mips (e.g. pmax) +// OBSOLETE * running Mach 3.0 +// OBSOLETE * +// OBSOLETE * Author: Jukka Virtanen <jtv@hut.fi> +// OBSOLETE */ +// OBSOLETE +// OBSOLETE #include "defs.h" +// OBSOLETE #include "inferior.h" +// OBSOLETE #include "regcache.h" +// OBSOLETE +// OBSOLETE #include <stdio.h> +// OBSOLETE +// OBSOLETE #include <mach.h> +// OBSOLETE #include <mach/message.h> +// OBSOLETE #include <mach/exception.h> +// OBSOLETE #include <mach_error.h> +// OBSOLETE +// OBSOLETE /* Find offsets to thread states at compile time. +// OBSOLETE * If your compiler does not grok this, check the hand coded +// OBSOLETE * offsets and use them. +// OBSOLETE */ +// OBSOLETE +// OBSOLETE #if 1 +// OBSOLETE +// OBSOLETE #define REG_OFFSET(reg) (int)(&((struct mips_thread_state *)0)->reg) +// OBSOLETE #define CREG_OFFSET(reg) (int)(&((struct mips_float_state *)0)->reg) +// OBSOLETE #define EREG_OFFSET(reg) (int)(&((struct mips_exc_state *)0)->reg) +// OBSOLETE +// OBSOLETE /* at reg_offset[i] is the offset to the mips_thread_state +// OBSOLETE * location where the gdb registers[i] is stored. +// OBSOLETE * +// OBSOLETE * -1 means mach does not save it anywhere. +// OBSOLETE */ +// OBSOLETE static int reg_offset[] = +// OBSOLETE { +// OBSOLETE /* zero at v0 v1 */ +// OBSOLETE -1, REG_OFFSET (r1), REG_OFFSET (r2), REG_OFFSET (r3), +// OBSOLETE +// OBSOLETE /* a0 a1 a2 a3 */ +// OBSOLETE REG_OFFSET (r4), REG_OFFSET (r5), REG_OFFSET (r6), REG_OFFSET (r7), +// OBSOLETE +// OBSOLETE /* t0 t1 t2 t3 */ +// OBSOLETE REG_OFFSET (r8), REG_OFFSET (r9), REG_OFFSET (r10), REG_OFFSET (r11), +// OBSOLETE +// OBSOLETE /* t4 t5 t6 t7 */ +// OBSOLETE REG_OFFSET (r12), REG_OFFSET (r13), REG_OFFSET (r14), REG_OFFSET (r15), +// OBSOLETE +// OBSOLETE /* s0 s1 s2 s3 */ +// OBSOLETE REG_OFFSET (r16), REG_OFFSET (r17), REG_OFFSET (r18), REG_OFFSET (r19), +// OBSOLETE +// OBSOLETE /* s4 s5 s6 s7 */ +// OBSOLETE REG_OFFSET (r20), REG_OFFSET (r21), REG_OFFSET (r22), REG_OFFSET (r23), +// OBSOLETE +// OBSOLETE /* t8 t9 k0 k1 */ +// OBSOLETE REG_OFFSET (r24), REG_OFFSET (r25), REG_OFFSET (r26), REG_OFFSET (r27), +// OBSOLETE +// OBSOLETE /* gp sp s8(30) == fp(72) ra */ +// OBSOLETE REG_OFFSET (r28), REG_OFFSET (r29), REG_OFFSET (r30), REG_OFFSET (r31), +// OBSOLETE +// OBSOLETE /* sr(32) PS_REGNUM */ +// OBSOLETE EREG_OFFSET (coproc_state), +// OBSOLETE +// OBSOLETE /* lo(33) hi(34) */ +// OBSOLETE REG_OFFSET (mdlo), REG_OFFSET (mdhi), +// OBSOLETE +// OBSOLETE /* bad(35) cause(36) pc(37) */ +// OBSOLETE EREG_OFFSET (address), EREG_OFFSET (cause), REG_OFFSET (pc), +// OBSOLETE +// OBSOLETE /* f0(38) f1(39) f2(40) f3(41) */ +// OBSOLETE CREG_OFFSET (r0), CREG_OFFSET (r1), CREG_OFFSET (r2), CREG_OFFSET (r3), +// OBSOLETE CREG_OFFSET (r4), CREG_OFFSET (r5), CREG_OFFSET (r6), CREG_OFFSET (r7), +// OBSOLETE CREG_OFFSET (r8), CREG_OFFSET (r9), CREG_OFFSET (r10), CREG_OFFSET (r11), +// OBSOLETE CREG_OFFSET (r12), CREG_OFFSET (r13), CREG_OFFSET (r14), CREG_OFFSET (r15), +// OBSOLETE CREG_OFFSET (r16), CREG_OFFSET (r17), CREG_OFFSET (r18), CREG_OFFSET (r19), +// OBSOLETE CREG_OFFSET (r20), CREG_OFFSET (r21), CREG_OFFSET (r22), CREG_OFFSET (r23), +// OBSOLETE CREG_OFFSET (r24), CREG_OFFSET (r25), CREG_OFFSET (r26), CREG_OFFSET (r27), +// OBSOLETE CREG_OFFSET (r28), CREG_OFFSET (r29), CREG_OFFSET (r30), CREG_OFFSET (r31), +// OBSOLETE +// OBSOLETE /* fsr(70) fir(71) fp(72) == s8(30) */ +// OBSOLETE CREG_OFFSET (csr), CREG_OFFSET (esr), REG_OFFSET (r30) +// OBSOLETE }; +// OBSOLETE #else +// OBSOLETE /* If the compiler does not grok the above defines */ +// OBSOLETE static int reg_offset[] = +// OBSOLETE { +// OBSOLETE /* mach_thread_state offsets: */ +// OBSOLETE -1, 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, +// OBSOLETE 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, +// OBSOLETE /*sr, lo, hi,addr,cause,pc */ +// OBSOLETE 8, 124, 128, 4, 0, 132, +// OBSOLETE /* mach_float_state offsets: */ +// OBSOLETE 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, +// OBSOLETE 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, +// OBSOLETE /*fsr,fir */ +// OBSOLETE 128, 132, +// OBSOLETE /* FP_REGNUM pseudo maps to s8==r30 in mach_thread_state */ +// OBSOLETE 116 +// OBSOLETE }; +// OBSOLETE #endif +// OBSOLETE +// OBSOLETE /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM +// OBSOLETE * Caller knows that the regs handled in one transaction are of same size. +// OBSOLETE */ +// OBSOLETE #define FETCH_REGS(state, regnum, count) \ +// OBSOLETE memcpy (&deprecated_registers[REGISTER_BYTE (regnum)], \ +// OBSOLETE (char *)state+reg_offset[ regnum ], \ +// OBSOLETE count*REGISTER_SIZE) +// OBSOLETE +// OBSOLETE /* Store COUNT contiguous registers to thread STATE starting from REGNUM */ +// OBSOLETE #define STORE_REGS(state, regnum, count) \ +// OBSOLETE memcpy ((char *)state+reg_offset[ regnum ], \ +// OBSOLETE &deprecated_registers[REGISTER_BYTE (regnum)], \ +// OBSOLETE count*REGISTER_SIZE) +// OBSOLETE +// OBSOLETE #define REGS_ALL -1 +// OBSOLETE #define REGS_NORMAL 1 +// OBSOLETE #define REGS_EXC 2 +// OBSOLETE #define REGS_COP1 4 +// OBSOLETE +// OBSOLETE /* Hardware regs that matches FP_REGNUM */ +// OBSOLETE #define MACH_FP_REGNUM 30 +// OBSOLETE +// OBSOLETE /* Fech thread's registers. if regno == -1, fetch all regs */ +// OBSOLETE void +// OBSOLETE fetch_inferior_registers (int regno) +// OBSOLETE { +// OBSOLETE kern_return_t ret; +// OBSOLETE +// OBSOLETE thread_state_data_t state; +// OBSOLETE struct mips_exc_state exc_state; +// OBSOLETE +// OBSOLETE int stateCnt = MIPS_THREAD_STATE_COUNT; +// OBSOLETE +// OBSOLETE int which_regs = 0; /* A bit mask */ +// OBSOLETE +// OBSOLETE if (!MACH_PORT_VALID (current_thread)) +// OBSOLETE error ("fetch inferior registers: Invalid thread"); +// OBSOLETE +// OBSOLETE if (regno < -1 || regno >= NUM_REGS) +// OBSOLETE error ("invalid register %d supplied to fetch_inferior_registers", regno); +// OBSOLETE +// OBSOLETE if (regno == -1) +// OBSOLETE which_regs = REGS_ALL; +// OBSOLETE else if (regno == ZERO_REGNUM) +// OBSOLETE { +// OBSOLETE int zero = 0; +// OBSOLETE supply_register (ZERO_REGNUM, &zero); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE else if ((ZERO_REGNUM < regno && regno < PS_REGNUM) +// OBSOLETE || regno == FP_REGNUM +// OBSOLETE || regno == LO_REGNUM +// OBSOLETE || regno == HI_REGNUM +// OBSOLETE || regno == PC_REGNUM) +// OBSOLETE which_regs = REGS_NORMAL; +// OBSOLETE else if (FP0_REGNUM <= regno && regno <= FCRIR_REGNUM) +// OBSOLETE which_regs = REGS_COP1 | REGS_EXC; +// OBSOLETE else +// OBSOLETE which_regs = REGS_EXC; +// OBSOLETE +// OBSOLETE /* fetch regs saved to mips_thread_state */ +// OBSOLETE if (which_regs & REGS_NORMAL) +// OBSOLETE { +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE MIPS_THREAD_STATE, +// OBSOLETE state, +// OBSOLETE &stateCnt); +// OBSOLETE CHK ("fetch inferior registers: thread_get_state", ret); +// OBSOLETE +// OBSOLETE if (which_regs == REGS_NORMAL) +// OBSOLETE { +// OBSOLETE /* Fetch also FP_REGNUM if fetching MACH_FP_REGNUM and vice versa */ +// OBSOLETE if (regno == MACH_FP_REGNUM || regno == FP_REGNUM) +// OBSOLETE { +// OBSOLETE supply_register (FP_REGNUM, +// OBSOLETE (char *) state + reg_offset[MACH_FP_REGNUM]); +// OBSOLETE supply_register (MACH_FP_REGNUM, +// OBSOLETE (char *) state + reg_offset[MACH_FP_REGNUM]); +// OBSOLETE } +// OBSOLETE else +// OBSOLETE supply_register (regno, +// OBSOLETE (char *) state + reg_offset[regno]); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* ZERO_REGNUM is always zero */ +// OBSOLETE *(int *) deprecated_registers = 0; +// OBSOLETE +// OBSOLETE /* Copy thread saved regs 1..31 to gdb's reg value array +// OBSOLETE * Luckily, they are contiquous +// OBSOLETE */ +// OBSOLETE FETCH_REGS (state, 1, 31); +// OBSOLETE +// OBSOLETE /* Copy mdlo and mdhi */ +// OBSOLETE FETCH_REGS (state, LO_REGNUM, 2); +// OBSOLETE +// OBSOLETE /* Copy PC */ +// OBSOLETE FETCH_REGS (state, PC_REGNUM, 1); +// OBSOLETE +// OBSOLETE /* Mach 3.0 saves FP to MACH_FP_REGNUM. +// OBSOLETE * For some reason gdb wants to assign a pseudo register for it. +// OBSOLETE */ +// OBSOLETE FETCH_REGS (state, FP_REGNUM, 1); +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* Read exc state. Also read if need to fetch floats */ +// OBSOLETE if (which_regs & REGS_EXC) +// OBSOLETE { +// OBSOLETE stateCnt = MIPS_EXC_STATE_COUNT; +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE MIPS_EXC_STATE, +// OBSOLETE (thread_state_t) & exc_state, +// OBSOLETE &stateCnt); +// OBSOLETE CHK ("fetch inferior regs (exc): thread_get_state", ret); +// OBSOLETE +// OBSOLETE /* We need to fetch exc_state to see if the floating +// OBSOLETE * state is valid for the thread. +// OBSOLETE */ +// OBSOLETE +// OBSOLETE /* cproc_state: Which coprocessors the thread uses */ +// OBSOLETE supply_register (PS_REGNUM, +// OBSOLETE (char *) &exc_state + reg_offset[PS_REGNUM]); +// OBSOLETE +// OBSOLETE if (which_regs == REGS_EXC || which_regs == REGS_ALL) +// OBSOLETE { +// OBSOLETE supply_register (BADVADDR_REGNUM, +// OBSOLETE (char *) &exc_state + reg_offset[BADVADDR_REGNUM]); +// OBSOLETE +// OBSOLETE supply_register (CAUSE_REGNUM, +// OBSOLETE (char *) &exc_state + reg_offset[CAUSE_REGNUM]); +// OBSOLETE if (which_regs == REGS_EXC) +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE } +// OBSOLETE +// OBSOLETE +// OBSOLETE if (which_regs & REGS_COP1) +// OBSOLETE { +// OBSOLETE /* If the thread does not have saved COPROC1, set regs to zero */ +// OBSOLETE +// OBSOLETE if (!(exc_state.coproc_state & MIPS_STATUS_USE_COP1)) +// OBSOLETE bzero (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], +// OBSOLETE sizeof (struct mips_float_state)); +// OBSOLETE else +// OBSOLETE { +// OBSOLETE stateCnt = MIPS_FLOAT_STATE_COUNT; +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE MIPS_FLOAT_STATE, +// OBSOLETE state, +// OBSOLETE &stateCnt); +// OBSOLETE CHK ("fetch inferior regs (floats): thread_get_state", ret); +// OBSOLETE +// OBSOLETE if (regno != -1) +// OBSOLETE { +// OBSOLETE supply_register (regno, +// OBSOLETE (char *) state + reg_offset[regno]); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE +// OBSOLETE FETCH_REGS (state, FP0_REGNUM, 34); +// OBSOLETE } +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* All registers are valid, if not returned yet */ +// OBSOLETE deprecated_registers_fetched (); +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* Store gdb's view of registers to the thread. +// OBSOLETE * All registers are always valid when entering here. +// OBSOLETE * @@ ahem, maybe that is too strict, we could validate the necessary ones +// OBSOLETE * here. +// OBSOLETE * +// OBSOLETE * Hmm. It seems that gdb set $reg=value command first reads everything, +// OBSOLETE * then sets the reg and then stores everything. -> we must make sure +// OBSOLETE * that the immutable registers are not changed by reading them first. +// OBSOLETE */ +// OBSOLETE +// OBSOLETE void +// OBSOLETE store_inferior_registers (register int regno) +// OBSOLETE { +// OBSOLETE thread_state_data_t state; +// OBSOLETE kern_return_t ret; +// OBSOLETE +// OBSOLETE if (!MACH_PORT_VALID (current_thread)) +// OBSOLETE error ("store inferior registers: Invalid thread"); +// OBSOLETE +// OBSOLETE /* Check for read only regs. +// OBSOLETE * @@ If some of these is can be changed, fix this +// OBSOLETE */ +// OBSOLETE if (regno == ZERO_REGNUM || +// OBSOLETE regno == PS_REGNUM || +// OBSOLETE regno == BADVADDR_REGNUM || +// OBSOLETE regno == CAUSE_REGNUM || +// OBSOLETE regno == FCRIR_REGNUM) +// OBSOLETE { +// OBSOLETE message ("You can not alter read-only register `%s'", +// OBSOLETE REGISTER_NAME (regno)); +// OBSOLETE fetch_inferior_registers (regno); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE +// OBSOLETE if (regno == -1) +// OBSOLETE { +// OBSOLETE /* Don't allow these to change */ +// OBSOLETE +// OBSOLETE /* ZERO_REGNUM */ +// OBSOLETE *(int *) deprecated_registers = 0; +// OBSOLETE +// OBSOLETE fetch_inferior_registers (PS_REGNUM); +// OBSOLETE fetch_inferior_registers (BADVADDR_REGNUM); +// OBSOLETE fetch_inferior_registers (CAUSE_REGNUM); +// OBSOLETE fetch_inferior_registers (FCRIR_REGNUM); +// OBSOLETE } +// OBSOLETE +// OBSOLETE if (regno == -1 || (ZERO_REGNUM < regno && regno <= PC_REGNUM)) +// OBSOLETE { +// OBSOLETE #if 1 +// OBSOLETE /* Mach 3.0 saves thread's FP to MACH_FP_REGNUM. +// OBSOLETE * GDB wants assigns a pseudo register FP_REGNUM for frame pointer. +// OBSOLETE * +// OBSOLETE * @@@ Here I assume (!) that gdb's FP has the value that +// OBSOLETE * should go to threads frame pointer. If not true, this +// OBSOLETE * fails badly!!!!! +// OBSOLETE */ +// OBSOLETE memcpy (&deprecated_registers[REGISTER_BYTE (MACH_FP_REGNUM)], +// OBSOLETE &deprecated_registers[REGISTER_BYTE (FP_REGNUM)], +// OBSOLETE REGISTER_RAW_SIZE (FP_REGNUM)); +// OBSOLETE #endif +// OBSOLETE +// OBSOLETE /* Save gdb's regs 1..31 to thread saved regs 1..31 +// OBSOLETE * Luckily, they are contiquous +// OBSOLETE */ +// OBSOLETE STORE_REGS (state, 1, 31); +// OBSOLETE +// OBSOLETE /* Save mdlo, mdhi */ +// OBSOLETE STORE_REGS (state, LO_REGNUM, 2); +// OBSOLETE +// OBSOLETE /* Save PC */ +// OBSOLETE STORE_REGS (state, PC_REGNUM, 1); +// OBSOLETE +// OBSOLETE ret = thread_set_state (current_thread, +// OBSOLETE MIPS_THREAD_STATE, +// OBSOLETE state, +// OBSOLETE MIPS_FLOAT_STATE_COUNT); +// OBSOLETE CHK ("store inferior regs : thread_set_state", ret); +// OBSOLETE } +// OBSOLETE +// OBSOLETE if (regno == -1 || regno >= FP0_REGNUM) +// OBSOLETE { +// OBSOLETE /* If thread has floating state, save it */ +// OBSOLETE if (read_register (PS_REGNUM) & MIPS_STATUS_USE_COP1) +// OBSOLETE { +// OBSOLETE /* Do NOT save FCRIR_REGNUM */ +// OBSOLETE STORE_REGS (state, FP0_REGNUM, 33); +// OBSOLETE +// OBSOLETE ret = thread_set_state (current_thread, +// OBSOLETE MIPS_FLOAT_STATE, +// OBSOLETE state, +// OBSOLETE MIPS_FLOAT_STATE_COUNT); +// OBSOLETE CHK ("store inferior registers (floats): thread_set_state", ret); +// OBSOLETE } +// OBSOLETE else if (regno != -1) +// OBSOLETE message +// OBSOLETE ("Thread does not use floating point unit, floating regs not saved"); +// OBSOLETE } +// OBSOLETE } |