/* Native support for Motorola 88k running Harris CX/UX. Copyright 1988, 1990, 1991, 1992, 1993, 1994 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "defs.h" #include "frame.h" #include "inferior.h" #include #include #include #include #include "gdbcore.h" #include #include "bfd.h" #include "symfile.h" #include "objfiles.h" #include "symtab.h" #ifndef USER /* added to support BCS ptrace_user */ #define USER ptrace_user #endif #include #include #include #include #include "symtab.h" #include "setjmp.h" #include "value.h" #include /* CX/UX provides them already, but as word offsets instead of char offsets */ #define SXIP_OFFSET (PT_SXIP * 4) #define SNIP_OFFSET (PT_SNIP * 4) #define SFIP_OFFSET (PT_SFIP * 4) #define PSR_OFFSET (PT_PSR * sizeof(int)) #define FPSR_OFFSET (PT_FPSR * sizeof(int)) #define FPCR_OFFSET (PT_FPCR * sizeof(int)) #define XREGADDR(r) (((char *)&u.pt_x0-(char *)&u) + \ ((r)-X0_REGNUM)*sizeof(X_REGISTER_RAW_TYPE)) extern int have_symbol_file_p(); extern jmp_buf stack_jmp; extern int errno; extern char registers[REGISTER_BYTES]; void fetch_inferior_registers (regno) int regno; /* Original value discarded */ { register unsigned int regaddr; char buf[MAX_REGISTER_RAW_SIZE]; register int i; struct USER u; unsigned int offset; offset = (char *) &u.pt_r0 - (char *) &u; regaddr = offset; /* byte offset to r0;*/ /* offset = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */ for (regno = 0; regno < PC_REGNUM; regno++) { /*regaddr = register_addr (regno, offset);*/ /* 88k enhancement */ for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) { *(int *) &buf[i] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, 0); regaddr += sizeof (int); } supply_register (regno, buf); } /* now load up registers 32-37; special pc registers */ *(int *) &buf[0] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) PSR_OFFSET,0); supply_register (PSR_REGNUM, buf); *(int *) &buf[0] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) FPSR_OFFSET,0); supply_register (FPSR_REGNUM, buf); *(int *) &buf[0] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) FPCR_OFFSET,0); supply_register (FPCR_REGNUM, buf); *(int *) &buf[0] = ptrace (3,inferior_pid, (PTRACE_ARG3_TYPE) SXIP_OFFSET ,0); supply_register (SXIP_REGNUM, buf); *(int *) &buf[0] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) SNIP_OFFSET,0); supply_register (SNIP_REGNUM, buf); *(int *) &buf[0] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) SFIP_OFFSET,0); supply_register (SFIP_REGNUM, buf); if (target_is_m88110) { for (regaddr = XREGADDR(X0_REGNUM), regno = X0_REGNUM; regno < NUM_REGS; regno++, regaddr += 16) { X_REGISTER_RAW_TYPE xval; *(int *) &xval.w1 = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, 0); *(int *) &xval.w2 = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+4), 0); *(int *) &xval.w3 = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+8), 0); *(int *) &xval.w4 = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+12), 0); supply_register(regno, (void *)&xval); } } } /* Store our register values back into the inferior. If REGNO is -1, do this for all registers. Otherwise, REGNO specifies which register (so we can save time). */ void store_inferior_registers (regno) int regno; { register unsigned int regaddr; char buf[80]; struct USER u; unsigned int offset = (char *) &u.pt_r0 - (char *) &u; regaddr = offset; /* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either svr3 doesn't run on an 88110, or the kernel isolates the different (not completely sure this is true, but seems to be. */ if (regno >= 0) { /* regaddr = register_addr (regno, offset); */ if (regno < PC_REGNUM) { regaddr = offset + regno * sizeof (int); errno = 0; ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, read_register (regno)); if (errno != 0) { sprintf (buf, "writing register number %d", regno); perror_with_name (buf); } } else if (regno == PSR_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) PSR_OFFSET, read_register(regno)); else if (regno == FPSR_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register(regno)); else if (regno == FPCR_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register(regno)); else if (regno == SXIP_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register(regno)); else if (regno == SNIP_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register(regno)); else if (regno == SFIP_REGNUM) ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register(regno)); else if (target_is_m88110 && regno < NUM_REGS) { X_REGISTER_RAW_TYPE xval; read_register_bytes(REGISTER_BYTE(regno), (char *)&xval, sizeof(X_REGISTER_RAW_TYPE)); regaddr = XREGADDR(regno); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr+4, xval.w2); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr+8, xval.w3); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr+12, xval.w4); } else printf_unfiltered ("Bad register number for store_inferior routine\n"); } else { for (regno = 0; regno < PC_REGNUM; regno++) { /* regaddr = register_addr (regno, offset); */ errno = 0; regaddr = offset + regno * sizeof (int); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, read_register (regno)); if (errno != 0) { sprintf (buf, "writing register number %d", regno); perror_with_name (buf); } } ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) PSR_OFFSET, read_register(regno)); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) FPSR_OFFSET,read_register(regno)); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) FPCR_OFFSET,read_register(regno)); ptrace (6,inferior_pid, (PTRACE_ARG3_TYPE) SXIP_OFFSET,read_register(SXIP_REGNUM)); ptrace (6,inferior_pid, (PTRACE_ARG3_TYPE) SNIP_OFFSET,read_register(SNIP_REGNUM)); ptrace (6,inferior_pid, (PTRACE_ARG3_TYPE) SFIP_OFFSET,read_register(SFIP_REGNUM)); if (target_is_m88110) { for (regno = X0_REGNUM; regno < NUM_REGS; regno++) { X_REGISTER_RAW_TYPE xval; read_register_bytes(REGISTER_BYTE(regno), (char *)&xval, sizeof(X_REGISTER_RAW_TYPE)); regaddr = XREGADDR(regno); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+4), xval.w2); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+8), xval.w3); ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr+12), xval.w4); } } } } /* blockend is the address of the end of the user structure */ m88k_register_u_addr (blockend, regnum) int blockend, regnum; { struct USER u; int ustart = blockend - sizeof (struct USER); if (regnum < PSR_REGNUM) return (ustart + ((int) &u.pt_r0 - (int) &u) + REGISTER_SIZE * regnum); else if (regnum == PSR_REGNUM) return (ustart + ((int) &u.pt_psr) - (int) &u); else if (regnum == FPSR_REGNUM) return (ustart + ((int) &u.pt_fpsr) - (int) &u); else if (regnum == FPCR_REGNUM) return (ustart + ((int) &u.pt_fpcr) - (int) &u); else if (regnum == SXIP_REGNUM) return (ustart + SXIP_OFFSET); else if (regnum == SNIP_REGNUM) return (ustart + SNIP_OFFSET); else if (regnum == SFIP_REGNUM) return (ustart + SFIP_OFFSET); else if (target_is_m88110) return (ustart + ((int) &u.pt_x0 - (int) &u) + /* Must be X register */ sizeof(u.pt_x0) * (regnum - X0_REGNUM)); else return (blockend + REGISTER_SIZE * regnum); } #ifdef USE_PROC_FS #include /* Given a pointer to a general register set in /proc format (gregset_t *), unpack the register contents and supply them as gdb's idea of the current register values. */ void supply_gregset (gregsetp) gregset_t *gregsetp; { register int regi; register greg_t *regp = (greg_t *) gregsetp; for (regi=0; regi <= SP_REGNUM; regi++) supply_register (regi, (char *) (regp + regi)); supply_register (SXIP_REGNUM, (char *) (regp + R_XIP)); supply_register (SNIP_REGNUM, (char *) (regp + R_NIP)); supply_register (SFIP_REGNUM, (char *) (regp + R_FIP)); supply_register (PSR_REGNUM, (char *) (regp + R_PSR)); supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR)); supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR)); } void fill_gregset (gregsetp, regno) gregset_t *gregsetp; int regno; { int regi; register greg_t *regp = (greg_t *) gregsetp; extern char registers[]; for (regi = 0 ; regi <= R_R31 ; regi++) if ((regno == -1) || (regno == regi)) *(regp + regi) = *(int *) ®isters[REGISTER_BYTE(regi)]; if ((regno == -1) || (regno == SXIP_REGNUM)) *(regp + R_XIP) = *(int *) ®isters[REGISTER_BYTE(SXIP_REGNUM)]; if ((regno == -1) || (regno == SNIP_REGNUM)) *(regp + R_NIP) = *(int *) ®isters[REGISTER_BYTE(SNIP_REGNUM)]; if ((regno == -1) || (regno == SFIP_REGNUM)) *(regp + R_FIP) = *(int *) ®isters[REGISTER_BYTE(SFIP_REGNUM)]; if ((regno == -1) || (regno == PSR_REGNUM)) *(regp + R_PSR) = *(int *) ®isters[REGISTER_BYTE(PSR_REGNUM)]; if ((regno == -1) || (regno == FPSR_REGNUM)) *(regp + R_FPSR) = *(int *) ®isters[REGISTER_BYTE(FPSR_REGNUM)]; if ((regno == -1) || (regno == FPCR_REGNUM)) *(regp + R_FPCR) = *(int *) ®isters[REGISTER_BYTE(FPCR_REGNUM)]; } #endif /* USE_PROC_FS */ /* This support adds the equivalent of adb's % command. When the `add-shared-symbol-files' command is given, this routine scans the dynamic linker's link map and reads the minimal symbols from each shared object file listed in the map. */ struct link_map { unsigned long l_addr; /* address at which object is mapped */ char *l_name; /* full name of loaded object */ void *l_ld; /* dynamic structure of object */ struct link_map *l_next; /* next link object */ struct link_map *l_prev; /* previous link object */ }; #define LINKS_MAP_POINTER "_ld_tail" #define LIBC_FILE "/usr/lib/libc.so.1" #define SHARED_OFFSET 0xf0001000 #ifndef PATH_MAX #define PATH_MAX 1023 /* maximum size of path name on OS */ #endif void add_shared_symbol_files () { void *desc; struct link_map *ld_map, *lm, lms; struct minimal_symbol *minsym; struct objfile *objfile; char *path_name; if (! inferior_pid) { warning ("The program has not yet been started."); return; } objfile = symbol_file_add (LIBC_FILE, 0, 0, 0, 0, 1); minsym = lookup_minimal_symbol (LINKS_MAP_POINTER, objfile); ld_map = (struct link_map *) read_memory_integer (((int)SYMBOL_VALUE_ADDRESS(minsym) + SHARED_OFFSET), 4); lm = ld_map; while (lm) { int local_errno = 0; read_memory ((CORE_ADDR)lm, (char*)&lms, sizeof (struct link_map)); if (lms.l_name) { if (target_read_string ((CORE_ADDR)lms.l_name, &path_name, PATH_MAX, &local_errno)) { symbol_file_add (path_name, 1, lms.l_addr, 0, 0, 0); free(path_name); } } /* traverse links in reverse order so that we get the the symbols the user actually gets. */ lm = lms.l_prev; } } int target_is_m88110; #if defined(_ES_MP) #include unsigned int m88k_harris_core_register_addr (regno, reg_ptr) int regno, reg_ptr; { unsigned int word_offset; switch (regno) { case PSR_REGNUM: word_offset = R_EPSR; break; case FPSR_REGNUM: word_offset = R_FPSR; break; case FPCR_REGNUM: word_offset = R_FPCR; break; case SXIP_REGNUM: word_offset = R_EXIP; break; case SNIP_REGNUM: word_offset = R_ENIP; break; case SFIP_REGNUM: word_offset = R_EFIP; break; default: if (regno <= FP_REGNUM) word_offset = regno; else word_offset = ((regno - X0_REGNUM) * 4); } return (word_offset * 4); } #endif /* _ES_MP */ void _initialize_m88k_nat() { #ifdef _ES_MP /* Enable 88110 support, as we don't support the 88100 under ES/MP. */ target_is_m88110 = 1; #elif defined(_CX_UX) /* Determine whether we're running on an 88100 or an 88110. */ target_is_m88110 = (sinfo(SYSMACHINE,0) == SYS5800); #endif /* _CX_UX */ } #ifdef _ES_MP /* Given a pointer to a general register set in /proc format (gregset_t *), unpack the register contents and supply them as gdb's idea of the current register values. */ void supply_gregset (gregsetp) gregset_t *gregsetp; { register int regi; register greg_t *regp = (greg_t *) gregsetp; for (regi = 0 ; regi < R_R31 ; regi++) { supply_register (regi, (char *) (regp + regi)); } supply_register (PSR_REGNUM, (char *) (regp + R_EPSR)); supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR)); supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR)); supply_register (SXIP_REGNUM, (char *) (regp + R_EXIP)); supply_register (SNIP_REGNUM, (char *) (regp + R_ENIP)); supply_register (SFIP_REGNUM, (char *) (regp + R_EFIP)); } /* 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 (fpregsetp) fpregset_t *fpregsetp; { register int regi; char *from; for (regi = FP0_REGNUM ; regi <= FPLAST_REGNUM ; regi++) { from = (char *) &((*fpregsetp)[regi-FP0_REGNUM]); supply_register (regi, from); } } #endif /* _ES_MP */ #ifdef _CX_UX #include unsigned int m88k_harris_core_register_addr(int regno, int reg_ptr) { unsigned int word_offset; switch (regno) { case PSR_REGNUM : word_offset = R_PSR; break; case FPSR_REGNUM : word_offset = R_FPSR; break; case FPCR_REGNUM : word_offset = R_FPCR; break; case SXIP_REGNUM : word_offset = R_XIP; break; case SNIP_REGNUM : word_offset = R_NIP; break; case SFIP_REGNUM : word_offset = R_FIP; break; default : if (regno <= FP_REGNUM) word_offset = regno; else word_offset = ((regno - X0_REGNUM) * 4) + R_X0; } return (word_offset * 4); } #endif /* _CX_UX */