| /* 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "frame.h" |
| #include "inferior.h" |
| |
| #include <sys/types.h> |
| #include <sys/param.h> |
| #include <sys/dir.h> |
| #include <signal.h> |
| #include "gdbcore.h" |
| #include <sys/user.h> |
| |
| #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 <sys/ioctl.h> |
| #include <fcntl.h> |
| #include <sys/file.h> |
| #include "gdb_stat.h" |
| |
| #include "symtab.h" |
| #include "setjmp.h" |
| #include "value.h" |
| |
| #include <sys/ptrace.h> |
| |
| /* 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; |
| |
| 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 <sys/procfs.h> |
| |
| /* 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; |
| |
| 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, NULL, 0, OBJF_READNOW); |
| 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)) |
| { |
| struct section_addr_info section_addrs; |
| memset (§ion_addrs, 0, sizeof (section_addrs)); |
| section_addrs.text_addr = lms.l_addr; |
| symbol_file_add (path_name, 1, §ion_addrs, 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; |
| } |
| |
| /* Getting new symbols may change our opinion about what is |
| frameless. */ |
| reinit_frame_cache (); |
| } |
| |
| #if defined(_ES_MP) |
| |
| #include <sys/regset.h> |
| |
| 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 <sys/regset.h> |
| |
| 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 */ |