diff options
Diffstat (limited to 'gdb/rs6000-tdep.c')
| -rw-r--r-- | gdb/rs6000-tdep.c | 126 |
1 files changed, 59 insertions, 67 deletions
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index 57f1df100de..b45f62eec1f 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -80,7 +80,7 @@ rs6000_init_extra_frame_info (fromleaf, fi) fi->extra_info->initial_sp = 0; if (fi->next != (CORE_ADDR) 0 && fi->pc < TEXT_SEGMENT_BASE) - /* We're in get_prev_frame_info */ + /* We're in get_prev_frame */ /* and this is a special signal frame. */ /* (fi->pc will be some low address in the kernel, */ /* to which the signal handler returns). */ @@ -684,15 +684,18 @@ pop_frame () if (stop_stack_dummy) { -#ifdef USE_GENERIC_DUMMY_FRAMES - generic_pop_dummy_frame (); - flush_cached_frames (); - return; -#else - if (dummy_frame_count) - pop_dummy_frame (); - return; -#endif + if (USE_GENERIC_DUMMY_FRAMES) + { + generic_pop_dummy_frame (); + flush_cached_frames (); + return; + } + else + { + if (dummy_frame_count) + pop_dummy_frame (); + return; + } } /* Make sure that all registers are valid. */ @@ -818,10 +821,11 @@ push_arguments (nargs, args, sp, struct_return, struct_addr) CORE_ADDR saved_sp; -#ifndef USE_GENERIC_DUMMY_FRAMES - if ( dummy_frame_count <= 0) - printf_unfiltered ("FATAL ERROR -push_arguments()! frame not found!!\n"); -#endif /* GENERIC_DUMMY_FRAMES */ + if (!USE_GENERIC_DUMMY_FRAMES) + { + if (dummy_frame_count <= 0) + printf_unfiltered ("FATAL ERROR -push_arguments()! frame not found!!\n"); + } /* The first eight words of ther arguments are passed in registers. Copy them appropriately. @@ -899,15 +903,19 @@ both: ran_out_of_registers_for_arguments: -#ifdef USE_GENERIC_DUMMY_FRAMES - saved_sp = read_sp (); -#else - /* location for 8 parameters are always reserved. */ - sp -= 4 * 8; + if (USE_GENERIC_DUMMY_FRAMES) + { + saved_sp = read_sp (); + } + else + { + /* location for 8 parameters are always reserved. */ + sp -= 4 * 8; + + /* another six words for back chain, TOC register, link register, etc. */ + sp -= 24; + } - /* another six words for back chain, TOC register, link register, etc. */ - sp -= 24; -#endif /* GENERIC_DUMMY_FRAMES */ /* if there are more arguments, allocate space for them in the stack, then push them starting from the ninth one. */ @@ -977,14 +985,15 @@ ran_out_of_registers_for_arguments: /* Secure stack areas first, before doing anything else. */ write_register (SP_REGNUM, sp); -#ifndef USE_GENERIC_DUMMY_FRAMES -/* we want to copy 24 bytes of target's frame to dummy's frame, - then set back chain to point to new frame. */ - - saved_sp = dummy_frame_addr [dummy_frame_count - 1]; - read_memory (saved_sp, tmp_buffer, 24); - write_memory (sp, tmp_buffer, 24); -#endif /* GENERIC_DUMMY_FRAMES */ + if (!USE_GENERIC_DUMMY_FRAMES) + { + /* we want to copy 24 bytes of target's frame to dummy's frame, + then set back chain to point to new frame. */ + + saved_sp = dummy_frame_addr [dummy_frame_count - 1]; + read_memory (saved_sp, tmp_buffer, 24); + write_memory (sp, tmp_buffer, 24); + } /* set back chain properly */ store_address (tmp_buffer, 4, saved_sp); @@ -1146,10 +1155,11 @@ frame_saved_pc (fi) if (fi->signal_handler_caller) return read_memory_integer (fi->frame + SIG_FRAME_PC_OFFSET, 4); -#ifdef USE_GENERIC_DUMMY_FRAMES - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy(fi->pc, fi->frame, PC_REGNUM); -#endif /* GENERIC_DUMMY_FRAMES */ + if (USE_GENERIC_DUMMY_FRAMES) + { + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + return generic_read_register_dummy(fi->pc, fi->frame, PC_REGNUM); + } func_start = get_pc_function_start (fi->pc); @@ -1328,10 +1338,11 @@ rs6000_frame_chain (thisframe) { CORE_ADDR fp; -#ifdef USE_GENERIC_DUMMY_FRAMES - if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame)) - return thisframe->frame; /* dummy frame same as caller's frame */ -#endif /* GENERIC_DUMMY_FRAMES */ + if (USE_GENERIC_DUMMY_FRAMES) + { + if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame)) + return thisframe->frame; /* dummy frame same as caller's frame */ + } if (inside_entry_file (thisframe->pc) || thisframe->pc == entry_point_address ()) @@ -1348,17 +1359,17 @@ rs6000_frame_chain (thisframe) else fp = read_memory_integer ((thisframe)->frame, 4); -#ifdef USE_GENERIC_DUMMY_FRAMES - { - CORE_ADDR fpp, lr; + if (USE_GENERIC_DUMMY_FRAMES) + { + CORE_ADDR fpp, lr; + + lr = read_register (LR_REGNUM); + if (lr == entry_point_address ()) + if (fp != 0 && (fpp = read_memory_integer (fp, 4)) != 0) + if (PC_IN_CALL_DUMMY (lr, fpp, fpp)) + return fpp; + } - lr = read_register (LR_REGNUM); - if (lr == entry_point_address ()) - if (fp != 0 && (fpp = read_memory_integer (fp, 4)) != 0) - if (PC_IN_CALL_DUMMY (lr, fpp, fpp)) - return fpp; - } -#endif /* GENERIC_DUMMY_FRAMES */ return fp; } @@ -1391,25 +1402,6 @@ gdb_print_insn_powerpc (memaddr, info) } #endif -/* Function: get_saved_register - Just call the generic_get_saved_register function. */ - -#ifdef USE_GENERIC_DUMMY_FRAMES -void -get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) - char *raw_buffer; - int *optimized; - CORE_ADDR *addrp; - struct frame_info *frame; - int regnum; - enum lval_type *lval; -{ - generic_get_saved_register (raw_buffer, optimized, addrp, - frame, regnum, lval); -} -#endif - - /* Handling the various PowerPC/RS6000 variants. */ |