diff options
Diffstat (limited to 'gdb/hppa-tdep.c')
| -rw-r--r-- | gdb/hppa-tdep.c | 190 |
1 files changed, 104 insertions, 86 deletions
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c index 2e0c192250c..896d638e9e7 100644 --- a/gdb/hppa-tdep.c +++ b/gdb/hppa-tdep.c @@ -78,8 +78,7 @@ static unsigned extract_5R_store (unsigned int); static unsigned extract_5r_store (unsigned int); -static void find_dummy_frame_regs (struct frame_info *, - struct frame_saved_regs *); +static void find_dummy_frame_regs (struct frame_info *, CORE_ADDR *); static int find_proc_framesize (CORE_ADDR); @@ -103,7 +102,7 @@ static int low_sign_extend (unsigned int, unsigned int); static int sign_extend (unsigned int, unsigned int); -static int restore_pc_queue (struct frame_saved_regs *); +static int restore_pc_queue (CORE_ADDR *); static int hppa_alignof (struct type *); @@ -943,13 +942,13 @@ hppa_frame_saved_pc (struct frame_info *frame) && ((get_frame_type (frame->next) == SIGTRAMP_FRAME) || pc_in_interrupt_handler (frame->next->pc))) { - struct frame_saved_regs saved_regs; - - deprecated_get_frame_saved_regs (frame->next, &saved_regs); - if (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], + CORE_ADDR *saved_regs; + hppa_frame_init_saved_regs (frame->next); + saved_regs = get_frame_saved_regs (frame->next); + if (read_memory_integer (saved_regs[FLAGS_REGNUM], TARGET_PTR_BIT / 8) & 0x2) { - pc = read_memory_integer (saved_regs.regs[31], + pc = read_memory_integer (saved_regs[31], TARGET_PTR_BIT / 8) & ~0x3; /* Syscalls are really two frames. The syscall stub itself @@ -957,11 +956,11 @@ hppa_frame_saved_pc (struct frame_info *frame) a return pointer in %r31. We return the %rp variant if %r31 is the same as frame->pc. */ if (pc == frame->pc) - pc = read_memory_integer (saved_regs.regs[RP_REGNUM], + pc = read_memory_integer (saved_regs[RP_REGNUM], TARGET_PTR_BIT / 8) & ~0x3; } else - pc = read_memory_integer (saved_regs.regs[RP_REGNUM], + pc = read_memory_integer (saved_regs[RP_REGNUM], TARGET_PTR_BIT / 8) & ~0x3; } else @@ -983,13 +982,13 @@ hppa_frame_saved_pc (struct frame_info *frame) && ((get_frame_type (frame->next) == SIGTRAMP_FRAME) || pc_in_interrupt_handler (frame->next->pc))) { - struct frame_saved_regs saved_regs; - - deprecated_get_frame_saved_regs (frame->next, &saved_regs); - if (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], + CORE_ADDR *saved_regs; + hppa_frame_init_saved_regs (frame->next); + saved_regs = get_frame_saved_regs (frame->next); + if (read_memory_integer (saved_regs[FLAGS_REGNUM], TARGET_PTR_BIT / 8) & 0x2) { - pc = read_memory_integer (saved_regs.regs[31], + pc = read_memory_integer (saved_regs[31], TARGET_PTR_BIT / 8) & ~0x3; /* Syscalls are really two frames. The syscall stub itself @@ -997,11 +996,11 @@ hppa_frame_saved_pc (struct frame_info *frame) a return pointer in %r31. We return the %rp variant if %r31 is the same as frame->pc. */ if (pc == frame->pc) - pc = read_memory_integer (saved_regs.regs[RP_REGNUM], + pc = read_memory_integer (saved_regs[RP_REGNUM], TARGET_PTR_BIT / 8) & ~0x3; } else - pc = read_memory_integer (saved_regs.regs[RP_REGNUM], + pc = read_memory_integer (saved_regs[RP_REGNUM], TARGET_PTR_BIT / 8) & ~0x3; } else if (rp_offset == 0) @@ -1129,9 +1128,9 @@ hppa_frame_chain (struct frame_info *frame) /* A frame in the current frame list, or zero. */ struct frame_info *saved_regs_frame = 0; - /* Where the registers were saved in saved_regs_frame. - If saved_regs_frame is zero, this is garbage. */ - struct frame_saved_regs saved_regs; + /* Where the registers were saved in saved_regs_frame. If + saved_regs_frame is zero, this is garbage. */ + CORE_ADDR *saved_regs = NULL; CORE_ADDR caller_pc; @@ -1258,11 +1257,12 @@ hppa_frame_chain (struct frame_info *frame) /* The unwind entry claims that r3 is saved here. However, in optimized code, GCC often doesn't actually save r3. We'll discover this if we look at the prologue. */ - deprecated_get_frame_saved_regs (tmp_frame, &saved_regs); + hppa_frame_init_saved_regs (tmp_frame); + saved_regs = get_frame_saved_regs (tmp_frame); saved_regs_frame = tmp_frame; /* If we have an address for r3, that's good. */ - if (saved_regs.regs[FP_REGNUM]) + if (saved_regs[FP_REGNUM]) break; } } @@ -1307,21 +1307,24 @@ hppa_frame_chain (struct frame_info *frame) system call has a variable sized stack frame. */ if (tmp_frame != saved_regs_frame) - deprecated_get_frame_saved_regs (tmp_frame, &saved_regs); + { + hppa_frame_init_saved_regs (tmp_frame); + saved_regs = get_frame_saved_regs (tmp_frame); + } /* Abominable hack. */ if (current_target.to_has_execution == 0 - && ((saved_regs.regs[FLAGS_REGNUM] - && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], + && ((saved_regs[FLAGS_REGNUM] + && (read_memory_integer (saved_regs[FLAGS_REGNUM], TARGET_PTR_BIT / 8) & 0x2)) - || (saved_regs.regs[FLAGS_REGNUM] == 0 + || (saved_regs[FLAGS_REGNUM] == 0 && read_register (FLAGS_REGNUM) & 0x2))) { u = find_unwind_entry (DEPRECATED_FRAME_SAVED_PC (frame)); if (!u) { - return read_memory_integer (saved_regs.regs[FP_REGNUM], + return read_memory_integer (saved_regs[FP_REGNUM], TARGET_PTR_BIT / 8); } else @@ -1330,7 +1333,7 @@ hppa_frame_chain (struct frame_info *frame) } } - return read_memory_integer (saved_regs.regs[FP_REGNUM], + return read_memory_integer (saved_regs[FP_REGNUM], TARGET_PTR_BIT / 8); } } @@ -1342,21 +1345,24 @@ hppa_frame_chain (struct frame_info *frame) tmp_frame = tmp_frame->next; if (tmp_frame != saved_regs_frame) - deprecated_get_frame_saved_regs (tmp_frame, &saved_regs); + { + hppa_frame_init_saved_regs (tmp_frame); + saved_regs = get_frame_saved_regs (tmp_frame); + } /* Abominable hack. See above. */ if (current_target.to_has_execution == 0 - && ((saved_regs.regs[FLAGS_REGNUM] - && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], + && ((saved_regs[FLAGS_REGNUM] + && (read_memory_integer (saved_regs[FLAGS_REGNUM], TARGET_PTR_BIT / 8) & 0x2)) - || (saved_regs.regs[FLAGS_REGNUM] == 0 + || (saved_regs[FLAGS_REGNUM] == 0 && read_register (FLAGS_REGNUM) & 0x2))) { u = find_unwind_entry (DEPRECATED_FRAME_SAVED_PC (frame)); if (!u) { - return read_memory_integer (saved_regs.regs[FP_REGNUM], + return read_memory_integer (saved_regs[FP_REGNUM], TARGET_PTR_BIT / 8); } else @@ -1496,26 +1502,26 @@ hppa_push_dummy_frame (void) static void find_dummy_frame_regs (struct frame_info *frame, - struct frame_saved_regs *frame_saved_regs) + CORE_ADDR frame_saved_regs[]) { CORE_ADDR fp = frame->frame; int i; /* The 32bit and 64bit ABIs save RP into different locations. */ if (REGISTER_SIZE == 8) - frame_saved_regs->regs[RP_REGNUM] = (fp - 16) & ~0x3; + frame_saved_regs[RP_REGNUM] = (fp - 16) & ~0x3; else - frame_saved_regs->regs[RP_REGNUM] = (fp - 20) & ~0x3; + frame_saved_regs[RP_REGNUM] = (fp - 20) & ~0x3; - frame_saved_regs->regs[FP_REGNUM] = fp; + frame_saved_regs[FP_REGNUM] = fp; - frame_saved_regs->regs[1] = fp + (2 * REGISTER_SIZE); + frame_saved_regs[1] = fp + (2 * REGISTER_SIZE); for (fp += 3 * REGISTER_SIZE, i = 3; i < 32; i++) { if (i != FP_REGNUM) { - frame_saved_regs->regs[i] = fp; + frame_saved_regs[i] = fp; fp += REGISTER_SIZE; } } @@ -1525,14 +1531,14 @@ find_dummy_frame_regs (struct frame_info *frame, fp += 4; for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8) - frame_saved_regs->regs[i] = fp; - - frame_saved_regs->regs[IPSW_REGNUM] = fp; - frame_saved_regs->regs[SAR_REGNUM] = fp + REGISTER_SIZE; - frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp + 2 * REGISTER_SIZE; - frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp + 3 * REGISTER_SIZE; - frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp + 4 * REGISTER_SIZE; - frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp + 5 * REGISTER_SIZE; + frame_saved_regs[i] = fp; + + frame_saved_regs[IPSW_REGNUM] = fp; + frame_saved_regs[SAR_REGNUM] = fp + REGISTER_SIZE; + frame_saved_regs[PCOQ_HEAD_REGNUM] = fp + 2 * REGISTER_SIZE; + frame_saved_regs[PCSQ_HEAD_REGNUM] = fp + 3 * REGISTER_SIZE; + frame_saved_regs[PCOQ_TAIL_REGNUM] = fp + 4 * REGISTER_SIZE; + frame_saved_regs[PCSQ_TAIL_REGNUM] = fp + 5 * REGISTER_SIZE; } void @@ -1541,44 +1547,45 @@ hppa_pop_frame (void) register struct frame_info *frame = get_current_frame (); register CORE_ADDR fp, npc, target_pc; register int regnum; - struct frame_saved_regs fsr; + CORE_ADDR *fsr; double freg_buffer; fp = get_frame_base (frame); - deprecated_get_frame_saved_regs (frame, &fsr); + hppa_frame_init_saved_regs (frame); + fsr = get_frame_saved_regs (frame); #ifndef NO_PC_SPACE_QUEUE_RESTORE - if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */ - restore_pc_queue (&fsr); + if (fsr[IPSW_REGNUM]) /* Restoring a call dummy frame */ + restore_pc_queue (fsr); #endif for (regnum = 31; regnum > 0; regnum--) - if (fsr.regs[regnum]) - write_register (regnum, read_memory_integer (fsr.regs[regnum], + if (fsr[regnum]) + write_register (regnum, read_memory_integer (fsr[regnum], REGISTER_SIZE)); for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM; regnum--) - if (fsr.regs[regnum]) + if (fsr[regnum]) { - read_memory (fsr.regs[regnum], (char *) &freg_buffer, 8); + read_memory (fsr[regnum], (char *) &freg_buffer, 8); deprecated_write_register_bytes (REGISTER_BYTE (regnum), (char *) &freg_buffer, 8); } - if (fsr.regs[IPSW_REGNUM]) + if (fsr[IPSW_REGNUM]) write_register (IPSW_REGNUM, - read_memory_integer (fsr.regs[IPSW_REGNUM], + read_memory_integer (fsr[IPSW_REGNUM], REGISTER_SIZE)); - if (fsr.regs[SAR_REGNUM]) + if (fsr[SAR_REGNUM]) write_register (SAR_REGNUM, - read_memory_integer (fsr.regs[SAR_REGNUM], + read_memory_integer (fsr[SAR_REGNUM], REGISTER_SIZE)); /* If the PC was explicitly saved, then just restore it. */ - if (fsr.regs[PCOQ_TAIL_REGNUM]) + if (fsr[PCOQ_TAIL_REGNUM]) { - npc = read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM], + npc = read_memory_integer (fsr[PCOQ_TAIL_REGNUM], REGISTER_SIZE); write_register (PCOQ_TAIL_REGNUM, npc); } @@ -1591,7 +1598,7 @@ hppa_pop_frame (void) write_register (FP_REGNUM, read_memory_integer (fp, REGISTER_SIZE)); - if (fsr.regs[IPSW_REGNUM]) /* call dummy */ + if (fsr[IPSW_REGNUM]) /* call dummy */ write_register (SP_REGNUM, fp - 48); else write_register (SP_REGNUM, fp); @@ -1604,7 +1611,7 @@ hppa_pop_frame (void) Don't skip through the trampoline if we're popping a dummy frame. */ target_pc = SKIP_TRAMPOLINE_CODE (npc & ~0x3) & ~0x3; - if (target_pc && !fsr.regs[IPSW_REGNUM]) + if (target_pc && !fsr[IPSW_REGNUM]) { struct symtab_and_line sal; struct breakpoint *breakpoint; @@ -1635,10 +1642,10 @@ hppa_pop_frame (void) queue space registers. */ static int -restore_pc_queue (struct frame_saved_regs *fsr) +restore_pc_queue (CORE_ADDR *fsr) { CORE_ADDR pc = read_pc (); - CORE_ADDR new_pc = read_memory_integer (fsr->regs[PCOQ_HEAD_REGNUM], + CORE_ADDR new_pc = read_memory_integer (fsr[PCOQ_HEAD_REGNUM], TARGET_PTR_BIT / 8); struct target_waitstatus w; int insn_count; @@ -1657,7 +1664,7 @@ restore_pc_queue (struct frame_saved_regs *fsr) So, load up the registers and single step until we are in the right place. */ - write_register (21, read_memory_integer (fsr->regs[PCSQ_HEAD_REGNUM], + write_register (21, read_memory_integer (fsr[PCSQ_HEAD_REGNUM], REGISTER_SIZE)); write_register (22, new_pc); @@ -3842,15 +3849,15 @@ hppa_skip_prologue (CORE_ADDR pc) return (skip_prologue_hard_way (pc)); } -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. */ +/* Put here the code to store, into the SAVED_REGS, the addresses of + the saved registers of frame described by FRAME_INFO. This + includes special registers such as pc and fp saved in special ways + in the stack frame. sp is even more special: the address we return + for it IS the sp for the next frame. */ void hppa_frame_find_saved_regs (struct frame_info *frame_info, - struct frame_saved_regs *frame_saved_regs) + CORE_ADDR frame_saved_regs[]) { CORE_ADDR pc; struct unwind_table_entry *u; @@ -3861,7 +3868,7 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, int final_iteration; /* Zero out everything. */ - memset (frame_saved_regs, '\0', sizeof (struct frame_saved_regs)); + memset (frame_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS); /* Call dummy frames always look the same, so there's no need to examine the dummy code to determine locations of saved registers; @@ -3892,11 +3899,11 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, { /* SP is a little special. */ if (i == SP_REGNUM) - frame_saved_regs->regs[SP_REGNUM] + frame_saved_regs[SP_REGNUM] = read_memory_integer (frame_info->frame + SP_REGNUM * 4, TARGET_PTR_BIT / 8); else - frame_saved_regs->regs[i] = frame_info->frame + i * 4; + frame_saved_regs[i] = frame_info->frame + i * 4; } return; } @@ -3912,7 +3919,7 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, /* Get the starting address of the function referred to by the PC saved in frame. */ - pc = get_pc_function_start (frame_info->pc); + pc = get_frame_func (frame_info); /* Yow! */ u = find_unwind_entry (pc); @@ -3945,7 +3952,7 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, /* The frame always represents the value of %sp at entry to the current function (and is thus equivalent to the "saved" stack pointer. */ - frame_saved_regs->regs[SP_REGNUM] = frame_info->frame; + frame_saved_regs[SP_REGNUM] = frame_info->frame; /* Loop until we find everything of interest or hit a branch. @@ -3980,12 +3987,12 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, if (inst == 0x6bc23fd9) /* stw rp,-0x14(sr0,sp) */ { save_rp = 0; - frame_saved_regs->regs[RP_REGNUM] = frame_info->frame - 20; + frame_saved_regs[RP_REGNUM] = frame_info->frame - 20; } else if (inst == 0x0fc212c1) /* std rp,-0x10(sr0,sp) */ { save_rp = 0; - frame_saved_regs->regs[RP_REGNUM] = frame_info->frame - 16; + frame_saved_regs[RP_REGNUM] = frame_info->frame - 16; } /* Note if we saved SP into the stack. This also happens to indicate @@ -3993,7 +4000,7 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, if ( (inst & 0xffffc000) == 0x6fc10000 /* stw,ma r1,N(sr0,sp) */ || (inst & 0xffffc00c) == 0x73c10008) /* std,ma r1,N(sr0,sp) */ { - frame_saved_regs->regs[FP_REGNUM] = frame_info->frame; + frame_saved_regs[FP_REGNUM] = frame_info->frame; save_sp = 0; } @@ -4007,10 +4014,10 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, /* stwm with a positive displacement is a *post modify*. */ if ((inst >> 26) == 0x1b && extract_14 (inst) >= 0) - frame_saved_regs->regs[reg] = frame_info->frame; + frame_saved_regs[reg] = frame_info->frame; /* A std has explicit post_modify forms. */ else if ((inst & 0xfc00000c0) == 0x70000008) - frame_saved_regs->regs[reg] = frame_info->frame; + frame_saved_regs[reg] = frame_info->frame; else { CORE_ADDR offset; @@ -4024,10 +4031,10 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, /* Handle code with and without frame pointers. */ if (u->Save_SP) - frame_saved_regs->regs[reg] + frame_saved_regs[reg] = frame_info->frame + offset; else - frame_saved_regs->regs[reg] + frame_saved_regs[reg] = (frame_info->frame + (u->Total_frame_size << 3) + offset); } @@ -4060,12 +4067,12 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, /* 1st HP CC FP register store. After this instruction we've set enough state that the GCC and HPCC code are both handled in the same manner. */ - frame_saved_regs->regs[reg + FP4_REGNUM + 4] = frame_info->frame; + frame_saved_regs[reg + FP4_REGNUM + 4] = frame_info->frame; fp_loc = 8; } else { - frame_saved_regs->regs[reg + FP0_REGNUM + 4] + frame_saved_regs[reg + FP0_REGNUM + 4] = frame_info->frame + fp_loc; fp_loc += 8; } @@ -4085,6 +4092,17 @@ hppa_frame_find_saved_regs (struct frame_info *frame_info, } } +/* XXX - deprecated. This is a compatibility function for targets + that do not yet implement DEPRECATED_FRAME_INIT_SAVED_REGS. */ +/* Find the addresses in which registers are saved in FRAME. */ + +void +hppa_frame_init_saved_regs (struct frame_info *frame) +{ + if (get_frame_saved_regs (frame) == NULL) + frame_saved_regs_zalloc (frame); + hppa_frame_find_saved_regs (frame, get_frame_saved_regs (frame)); +} /* Exception handling support for the HP-UX ANSI C++ compiler. The compiler (aCC) provides a callback for exception events; |