X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fsparc-nat.c;h=540bbcc9e3bbf080606a00071a23ad3290264014;hb=61846f2867574d357e57650f9032ba60d4e32d0d;hp=e892fe8fbda13478d0c314653454c57c0892af01;hpb=2ee563b53258d390d7446e90a67f465d504ae44c;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/sparc-nat.c b/gdb/sparc-nat.c index e892fe8fbd..540bbcc9e3 100644 --- a/gdb/sparc-nat.c +++ b/gdb/sparc-nat.c @@ -1,6 +1,7 @@ /* Functions specific to running gdb native on a SPARC running SunOS4. - Copyright 1989, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. + + Copyright 1989, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -25,12 +26,14 @@ #include "gdbcore.h" #include "regcache.h" +#include "sparc-tdep.h" + #ifdef HAVE_SYS_PARAM_H #include #endif #include #include -#include +#include "gdb_wait.h" #ifdef __linux__ #include #else @@ -58,6 +61,25 @@ fetch_inferior_registers (int regno) struct regs inferior_registers; struct fp_status inferior_fp_registers; int i; + int fetch_pid; + + /* NOTE: cagney/2002-12-03: This code assumes that the currently + selected light weight processes' registers can be written + directly into the selected thread's register cache. This works + fine when given an 1:1 LWP:thread model (such as found on + GNU/Linux) but will, likely, have problems when used on an N:1 + (userland threads) or N:M (userland multiple LWP) model. In the + case of the latter two, the LWP's registers do not necessarily + belong to the selected thread (the LWP could be in the middle of + executing the thread switch code). + + These functions should instead be paramaterized with an explicit + object (struct regcache, struct thread_info?) into which the LWPs + registers can be written. */ + + fetch_pid = TIDGET (inferior_ptid); + if (fetch_pid == 0) + fetch_pid = PIDGET (inferior_ptid); /* We should never be called with deferred stores, because a prerequisite for writing regs is to have fetched them all (PREPARE_TO_STORE), sigh. */ @@ -73,31 +95,34 @@ fetch_inferior_registers (int regno) to the stack pointer. */ if (regno < O7_REGNUM /* including -1 */ || regno >= Y_REGNUM - || (!register_valid[SP_REGNUM] && regno < I7_REGNUM)) + || (!deprecated_register_valid[SP_REGNUM] && regno < I7_REGNUM)) { - if (0 != ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid), + if (0 != ptrace (PTRACE_GETREGS, fetch_pid, (PTRACE_ARG3_TYPE) & inferior_registers, 0)) perror ("ptrace_getregs"); - registers[REGISTER_BYTE (0)] = 0; - memcpy (®isters[REGISTER_BYTE (1)], &inferior_registers.r_g1, - 15 * REGISTER_RAW_SIZE (G0_REGNUM)); - *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; - *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; - *(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc; - *(int *) ®isters[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y; + deprecated_registers[REGISTER_BYTE (0)] = 0; + memcpy (&deprecated_registers[REGISTER_BYTE (1)], + &inferior_registers.r_g1, 15 * REGISTER_RAW_SIZE (G0_REGNUM)); + *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)] + = inferior_registers.r_ps; + *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)] + = inferior_registers.r_pc; + *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)] + = inferior_registers.r_npc; + *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y; for (i = G0_REGNUM; i <= O7_REGNUM; i++) - register_valid[i] = 1; - register_valid[Y_REGNUM] = 1; - register_valid[PS_REGNUM] = 1; - register_valid[PC_REGNUM] = 1; - register_valid[NPC_REGNUM] = 1; + deprecated_register_valid[i] = 1; + deprecated_register_valid[Y_REGNUM] = 1; + deprecated_register_valid[PS_REGNUM] = 1; + deprecated_register_valid[PC_REGNUM] = 1; + deprecated_register_valid[NPC_REGNUM] = 1; /* If we don't set these valid, read_register_bytes() rereads all the regs every time it is called! FIXME. */ - register_valid[WIM_REGNUM] = 1; /* Not true yet, FIXME */ - register_valid[TBR_REGNUM] = 1; /* Not true yet, FIXME */ - register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */ + deprecated_register_valid[WIM_REGNUM] = 1; /* Not true yet, FIXME */ + deprecated_register_valid[TBR_REGNUM] = 1; /* Not true yet, FIXME */ + deprecated_register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */ } /* Floating point registers */ @@ -105,39 +130,38 @@ fetch_inferior_registers (int regno) regno == FPS_REGNUM || (regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31)) { - if (0 != ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid), + if (0 != ptrace (PTRACE_GETFPREGS, fetch_pid, (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0)) perror ("ptrace_getfpregs"); - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, - sizeof inferior_fp_registers.fpu_fr); - memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], - &inferior_fp_registers.Fpu_fsr, - sizeof (FPU_FSR_TYPE)); + memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], + &inferior_fp_registers, sizeof inferior_fp_registers.fpu_fr); + memcpy (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)], + &inferior_fp_registers.Fpu_fsr, sizeof (FPU_FSR_TYPE)); for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++) - register_valid[i] = 1; - register_valid[FPS_REGNUM] = 1; + deprecated_register_valid[i] = 1; + deprecated_register_valid[FPS_REGNUM] = 1; } /* These regs are saved on the stack by the kernel. Only read them all (16 ptrace calls!) if we really need them. */ if (regno == -1) { - CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)]; - target_read_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], + CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)]; + target_read_memory (sp, &deprecated_registers[REGISTER_BYTE (L0_REGNUM)], 16 * REGISTER_RAW_SIZE (L0_REGNUM)); for (i = L0_REGNUM; i <= I7_REGNUM; i++) - register_valid[i] = 1; + deprecated_register_valid[i] = 1; } else if (regno >= L0_REGNUM && regno <= I7_REGNUM) { - CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)]; + CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)]; i = REGISTER_BYTE (regno); - if (register_valid[regno]) + if (deprecated_register_valid[regno]) printf_unfiltered ("register %d valid and read\n", regno); target_read_memory (sp + i - REGISTER_BYTE (L0_REGNUM), - ®isters[i], REGISTER_RAW_SIZE (regno)); - register_valid[regno] = 1; + &deprecated_registers[i], REGISTER_RAW_SIZE (regno)); + deprecated_register_valid[regno] = 1; } } @@ -151,6 +175,13 @@ store_inferior_registers (int regno) struct regs inferior_registers; struct fp_status inferior_fp_registers; int wanna_store = INT_REGS + STACK_REGS + FP_REGS; + int store_pid; + + /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers + about threaded assumptions. */ + store_pid = TIDGET (inferior_ptid); + if (store_pid == 0) + store_pid = PIDGET (inferior_ptid); /* First decide which pieces of machine-state we need to modify. Default for regno == -1 case is all pieces. */ @@ -195,22 +226,22 @@ store_inferior_registers (int regno) if (wanna_store & STACK_REGS) { - CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)]; + CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)]; if (regno < 0 || regno == SP_REGNUM) { - if (!register_valid[L0_REGNUM + 5]) + if (!deprecated_register_valid[L0_REGNUM + 5]) internal_error (__FILE__, __LINE__, "failed internal consistency check"); target_write_memory (sp, - ®isters[REGISTER_BYTE (L0_REGNUM)], + &deprecated_registers[REGISTER_BYTE (L0_REGNUM)], 16 * REGISTER_RAW_SIZE (L0_REGNUM)); } else { - if (!register_valid[regno]) + if (!deprecated_register_valid[regno]) internal_error (__FILE__, __LINE__, "failed internal consistency check"); target_write_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM), - ®isters[REGISTER_BYTE (regno)], + &deprecated_registers[REGISTER_BYTE (regno)], REGISTER_RAW_SIZE (regno)); } @@ -218,36 +249,39 @@ store_inferior_registers (int regno) if (wanna_store & INT_REGS) { - if (!register_valid[G1_REGNUM]) + if (!deprecated_register_valid[G1_REGNUM]) internal_error (__FILE__, __LINE__, "failed internal consistency check"); - memcpy (&inferior_registers.r_g1, ®isters[REGISTER_BYTE (G1_REGNUM)], + memcpy (&inferior_registers.r_g1, + &deprecated_registers[REGISTER_BYTE (G1_REGNUM)], 15 * REGISTER_RAW_SIZE (G1_REGNUM)); inferior_registers.r_ps = - *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)]; + *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)]; inferior_registers.r_pc = - *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; + *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)]; inferior_registers.r_npc = - *(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)]; + *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)]; inferior_registers.r_y = - *(int *) ®isters[REGISTER_BYTE (Y_REGNUM)]; + *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)]; - if (0 != ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid), + if (0 != ptrace (PTRACE_SETREGS, store_pid, (PTRACE_ARG3_TYPE) & inferior_registers, 0)) perror ("ptrace_setregs"); } if (wanna_store & FP_REGS) { - if (!register_valid[FP0_REGNUM + 9]) + if (!deprecated_register_valid[FP0_REGNUM + 9]) internal_error (__FILE__, __LINE__, "failed internal consistency check"); - memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], + memcpy (&inferior_fp_registers, + &deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], sizeof inferior_fp_registers.fpu_fr); memcpy (&inferior_fp_registers.Fpu_fsr, - ®isters[REGISTER_BYTE (FPS_REGNUM)], sizeof (FPU_FSR_TYPE)); + &deprecated_registers[REGISTER_BYTE (FPS_REGNUM)], + sizeof (FPU_FSR_TYPE)); if (0 != - ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid), + ptrace (PTRACE_SETFPREGS, store_pid, (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0)) perror ("ptrace_setfpregs"); } @@ -277,15 +311,15 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, #define gregs ((struct regs *)core_reg_sect) /* G0 *always* holds 0. */ - *(int *) ®isters[REGISTER_BYTE (0)] = 0; + *(int *) &deprecated_registers[REGISTER_BYTE (0)] = 0; /* The globals and output registers. */ - memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1, + memcpy (&deprecated_registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1, 15 * REGISTER_RAW_SIZE (G1_REGNUM)); - *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps; - *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc; - *(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc; - *(int *) ®isters[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y; + *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps; + *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc; + *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc; + *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y; /* My best guess at where to get the locals and input registers is exactly where they usually are, right above @@ -295,8 +329,9 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, { int sp; - sp = *(int *) ®isters[REGISTER_BYTE (SP_REGNUM)]; - if (0 != target_read_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], + sp = *(int *) &deprecated_registers[REGISTER_BYTE (SP_REGNUM)]; + if (0 != target_read_memory (sp, + &deprecated_registers[REGISTER_BYTE (L0_REGNUM)], 16 * REGISTER_RAW_SIZE (L0_REGNUM))) { /* fprintf_unfiltered so user can still use gdb */ @@ -313,10 +348,10 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, #define fpuregs ((struct fpu *) core_reg_sect) if (core_reg_size >= sizeof (struct fpu)) { - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], fpuregs->fpu_regs, - sizeof (fpuregs->fpu_regs)); - memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr, - sizeof (FPU_FSR_TYPE)); + memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], + fpuregs->fpu_regs, sizeof (fpuregs->fpu_regs)); + memcpy (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)], + &fpuregs->fpu_fsr, sizeof (FPU_FSR_TYPE)); } else fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");