* v850-tdep.c: Full multi-arch.
* config/v850/tm-v850.h: Eliminate or move to v850-tdep.c everything. Define GDB_MULTI_ARCH to 2.
This commit is contained in:
Corinna Vinschen
parent
9819c6c883
commit
435e042a62
3 changed files with 446 additions and 284 deletions
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@ -1,3 +1,9 @@
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2002-05-16 Corinna Vinschen <vinschen@redhat.com>
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* v850-tdep.c: Full multi-arch.
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* config/v850/tm-v850.h: Eliminate or move to v850-tdep.c everything.
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Define GDB_MULTI_ARCH to 2.
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2002-05-16 Pierre Muller <muller@ics.u-strasbg.fr>
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* p-exp.y (current_type): New static variable.
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@ -20,154 +20,4 @@
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "regcache.h"
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#include "symtab.h" /* For namespace_enum. */
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#include "symfile.h" /* For entry_point_address(). */
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#define NUM_REGS 66
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#define REGISTER_NAMES \
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{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
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"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
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"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
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\
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"eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", \
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"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", \
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"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", \
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"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31", \
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\
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"pc", "fp" }
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/* Initializer for an array of names of registers.
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Entries beyond the first NUM_REGS are ignored. */
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extern char **v850_register_names;
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#define REGISTER_NAME(i) v850_register_names[i]
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#define REGISTER_BYTES (NUM_REGS * 4)
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#define REGISTER_SIZE 4
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#define MAX_REGISTER_RAW_SIZE 4
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#define R0_REGNUM 0
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#define R1_REGNUM 1
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#define SAVE1_START_REGNUM 2
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#define SAVE1_END_REGNUM 2
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#define SP_REGNUM 3
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#define ARG0_REGNUM 6
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#define ARGLAST_REGNUM 9
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#define V0_REGNUM 10
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#define V1_REGNUM 11
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#define R12_REGNUM 12
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#define SAVE2_START_REGNUM 20
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#define SAVE2_END_REGNUM 29
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#define EP_REGNUM 30
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#define SAVE3_START_REGNUM 31
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#define SAVE3_END_REGNUM 31
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#define RP_REGNUM 31
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#define SR0_REGNUM 32
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#define PS_REGNUM (SR0_REGNUM+5)
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#define CTBP_REGNUM (SR0_REGNUM+20)
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#define PC_REGNUM 64
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#define FP_REGNUM 65
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#define FP_RAW_REGNUM 29
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#define TARGET_READ_FP() read_register (FP_RAW_REGNUM)
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#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
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#define REGISTER_BYTE(REG) ((REG) * 4)
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#define REGISTER_VIRTUAL_SIZE(REG) 4
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#define REGISTER_RAW_SIZE(REG) 4
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#define MAX_REGISTER_VIRTUAL_SIZE 4
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#define BREAKPOINT {0x85, 0x05} /* little-ended */
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#define FUNCTION_START_OFFSET 0
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#define DECR_PC_AFTER_BREAK 0
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#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
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#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)
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struct frame_info;
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struct frame_saved_regs;
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struct type;
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struct value;
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extern void v850_init_extra_frame_info (struct frame_info *fi);
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#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) v850_init_extra_frame_info (fi)
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#define INIT_FRAME_PC /* Not necessary */
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extern void v850_frame_init_saved_regs (struct frame_info *fi);
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#define FRAME_INIT_SAVED_REGS(FI) v850_frame_init_saved_regs (FI)
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extern CORE_ADDR v850_frame_chain (struct frame_info *fi);
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#define FRAME_CHAIN(fi) v850_frame_chain (fi)
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#define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid (FP, FI)
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extern CORE_ADDR v850_find_callers_reg (struct frame_info *fi, int regnum);
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extern CORE_ADDR v850_frame_saved_pc (struct frame_info *);
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#define FRAME_SAVED_PC(FI) (v850_frame_saved_pc (FI))
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#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
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memcpy (VALBUF, REGBUF + REGISTER_BYTE (V0_REGNUM), TYPE_LENGTH (TYPE))
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
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extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
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REGISTER_RAW_SIZE (V0_REGNUM))
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#define STORE_RETURN_VALUE(TYPE, VALBUF) \
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write_register_bytes(REGISTER_BYTE (V0_REGNUM), VALBUF, TYPE_LENGTH (TYPE));
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extern CORE_ADDR v850_skip_prologue (CORE_ADDR pc);
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#define SKIP_PROLOGUE(pc) (v850_skip_prologue (pc))
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#define FRAME_ARGS_SKIP 0
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#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
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#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
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#define FRAME_NUM_ARGS(fi) (-1)
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extern void v850_pop_frame (struct frame_info *frame);
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#define POP_FRAME v850_pop_frame (get_current_frame ())
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#define USE_GENERIC_DUMMY_FRAMES 1
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#define CALL_DUMMY {0}
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#define CALL_DUMMY_START_OFFSET (0)
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#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
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#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
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#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
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#define CALL_DUMMY_ADDRESS() entry_point_address ()
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extern CORE_ADDR v850_push_return_address (CORE_ADDR, CORE_ADDR);
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#define PUSH_RETURN_ADDRESS(PC, SP) v850_push_return_address (PC, SP)
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#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
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extern CORE_ADDR
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v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
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unsigned char struct_return, CORE_ADDR struct_addr);
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#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
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(v850_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
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#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP)
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#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
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extern use_struct_convention_fn v850_use_struct_convention;
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#define USE_STRUCT_CONVENTION(GCC_P, TYPE) v850_use_struct_convention (GCC_P, TYPE);
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/* override the default get_saved_register function with
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one that takes account of generic CALL_DUMMY frames */
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#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
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generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
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/* Define this for Wingdb */
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#define TARGET_V850
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#define GDB_MULTI_ARCH 2
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572
gdb/v850-tdep.c
572
gdb/v850-tdep.c
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@ -1,5 +1,5 @@
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/* Target-dependent code for the NEC V850 for GDB, the GNU debugger.
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Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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Copyright 1996, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -30,9 +30,112 @@
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#include "symfile.h"
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#include "arch-utils.h"
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#include "regcache.h"
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#include "symtab.h"
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struct gdbarch_tdep
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{
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/* gdbarch target dependent data here. Currently unused for v850. */
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};
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static char *v850_generic_reg_names[] = REGISTER_NAMES;
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/* Extra info which is saved in each frame_info. */
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struct frame_extra_info
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{
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};
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enum {
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E_R0_REGNUM,
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E_R1_REGNUM,
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E_R2_REGNUM, E_SAVE1_START_REGNUM = E_R2_REGNUM, E_SAVE1_END_REGNUM = E_R2_REGNUM,
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E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM,
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E_R4_REGNUM,
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E_R5_REGNUM,
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E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM,
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E_R7_REGNUM,
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E_R8_REGNUM,
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E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM,
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E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM,
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E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM,
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E_R12_REGNUM,
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E_R13_REGNUM,
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E_R14_REGNUM,
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E_R15_REGNUM,
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E_R16_REGNUM,
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E_R17_REGNUM,
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E_R18_REGNUM,
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E_R19_REGNUM,
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E_R20_REGNUM, E_SAVE2_START_REGNUM = E_R20_REGNUM,
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E_R21_REGNUM,
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E_R22_REGNUM,
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E_R23_REGNUM,
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E_R24_REGNUM,
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E_R25_REGNUM,
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E_R26_REGNUM,
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E_R27_REGNUM,
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E_R28_REGNUM,
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E_R29_REGNUM, E_SAVE2_END_REGNUM = E_R29_REGNUM, E_FP_RAW_REGNUM = E_R29_REGNUM,
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E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM,
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E_R31_REGNUM, E_SAVE3_START_REGNUM = E_R31_REGNUM, E_SAVE3_END_REGNUM = E_R31_REGNUM, E_RP_REGNUM = E_R31_REGNUM,
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E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM,
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E_R33_REGNUM,
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E_R34_REGNUM,
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E_R35_REGNUM,
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E_R36_REGNUM,
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E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM,
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E_R38_REGNUM,
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E_R39_REGNUM,
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E_R40_REGNUM,
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E_R41_REGNUM,
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E_R42_REGNUM,
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E_R43_REGNUM,
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E_R44_REGNUM,
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E_R45_REGNUM,
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E_R46_REGNUM,
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E_R47_REGNUM,
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E_R48_REGNUM,
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E_R49_REGNUM,
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E_R50_REGNUM,
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E_R51_REGNUM,
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E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM,
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E_R53_REGNUM,
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E_R54_REGNUM,
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E_R55_REGNUM,
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E_R56_REGNUM,
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E_R57_REGNUM,
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E_R58_REGNUM,
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E_R59_REGNUM,
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E_R60_REGNUM,
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E_R61_REGNUM,
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E_R62_REGNUM,
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E_R63_REGNUM,
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E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM,
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E_R65_REGNUM, E_FP_REGNUM = E_R65_REGNUM,
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E_NUM_REGS
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};
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enum
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{
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v850_reg_size = 4
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};
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/* Size of all registers as a whole. */
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enum
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{
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E_ALL_REGS_SIZE = (E_NUM_REGS) * v850_reg_size
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};
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static LONGEST call_dummy_nil[] = {0};
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static char *v850_generic_reg_names[] =
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{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
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"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
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"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
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"eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
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"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
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"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
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"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
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"pc", "fp"
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};
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static char *v850e_reg_names[] =
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{
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@ -93,6 +196,75 @@ struct prologue_info
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static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs);
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/* Function: v850_register_name
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Returns the name of the v850/v850e register N. */
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static char *
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v850_register_name (int regnum)
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{
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if (regnum < 0 || regnum >= E_NUM_REGS)
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internal_error (__FILE__, __LINE__,
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"v850_register_name: illegal register number %d",
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regnum);
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else
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return v850_register_names[regnum];
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}
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/* Function: v850_register_byte
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Returns the byte position in the register cache for register N. */
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static int
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v850_register_byte (int regnum)
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{
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if (regnum < 0 || regnum >= E_NUM_REGS)
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internal_error (__FILE__, __LINE__,
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"v850_register_byte: illegal register number %d",
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regnum);
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else
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return regnum * v850_reg_size;
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}
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/* Function: v850_register_raw_size
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Returns the number of bytes occupied by the register on the target. */
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static int
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v850_register_raw_size (int regnum)
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{
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if (regnum < 0 || regnum >= E_NUM_REGS)
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internal_error (__FILE__, __LINE__,
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"v850_register_raw_size: illegal register number %d",
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regnum);
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/* Only the PC has 4 Byte, all other registers 2 Byte. */
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else
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return v850_reg_size;
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}
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/* Function: v850_register_virtual_size
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Returns the number of bytes occupied by the register as represented
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internally by gdb. */
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static int
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v850_register_virtual_size (int regnum)
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{
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return v850_register_raw_size (regnum);
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}
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/* Function: v850_reg_virtual_type
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Returns the default type for register N. */
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static struct type *
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v850_reg_virtual_type (int regnum)
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{
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if (regnum < 0 || regnum >= E_NUM_REGS)
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internal_error (__FILE__, __LINE__,
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"v850_register_virtual_type: illegal register number %d",
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regnum);
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else if (regnum == E_PC_REGNUM)
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return builtin_type_uint32;
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else
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return builtin_type_int32;
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}
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/* Should call_function allocate stack space for a struct return? */
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int
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@ -150,7 +322,7 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
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it to the immediate value used to adjust SP. */
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for (i = 0; reg_table[i].mask != 0; i++)
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if (list12 & reg_table[i].mask)
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offset += REGISTER_RAW_SIZE (regtable[i].regno);
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offset += v850_register_raw_size (reg_table[i].regno);
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pi->frameoffset -= offset;
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/* Calculate the offsets of the registers relative to the value
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@ -163,7 +335,7 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
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if (list12 & reg_table[i].mask)
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{
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int reg = reg_table[i].regno;
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offset -= REGISTER_RAW_SIZE (reg);
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offset -= v850_register_raw_size (reg);
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pifsr->reg = reg;
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pifsr->offset = offset;
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pifsr->cur_frameoffset = pi->frameoffset;
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@ -197,7 +369,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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long offset = 0;
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static struct reg_list pushml_reg_table[] =
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{
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{0x80000, PS_REGNUM}, /* PSW */
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{0x80000, E_PS_REGNUM}, /* PSW */
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{0x40000, 1}, /* r1 */
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{0x20000, 2}, /* r2 */
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{0x10000, 3}, /* r3 */
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@ -248,7 +420,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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it to the immediate value used to adjust SP. */
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for (i = 0; reg_table[i].mask != 0; i++)
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if (list12 & reg_table[i].mask)
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offset += REGISTER_RAW_SIZE (regtable[i].regno);
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offset += v850_register_raw_size (reg_table[i].regno);
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pi->frameoffset -= offset;
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/* Calculate the offsets of the registers relative to the value
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@ -261,7 +433,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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if (list12 & reg_table[i].mask)
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{
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int reg = reg_table[i].regno;
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offset -= REGISTER_RAW_SIZE (reg);
|
||||
offset -= v850_register_raw_size (reg);
|
||||
pifsr->reg = reg;
|
||||
pifsr->offset = offset;
|
||||
pifsr->cur_frameoffset = pi->frameoffset;
|
||||
|
|
@ -340,7 +512,7 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
|
|||
registers. */
|
||||
|
||||
pi->frameoffset = 0;
|
||||
pi->framereg = SP_REGNUM;
|
||||
pi->framereg = E_SP_REGNUM;
|
||||
fp_used = 0;
|
||||
ep_used = 0;
|
||||
pifsr = pi->pifsrs;
|
||||
|
|
@ -397,7 +569,7 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
|
|||
}
|
||||
else if ((insn & 0xffc0) == 0x0200 && !regsave_func_p)
|
||||
{ /* callt <imm6> */
|
||||
long ctbp = read_register (CTBP_REGNUM);
|
||||
long ctbp = read_register (E_CTBP_REGNUM);
|
||||
long adr = ctbp + ((insn & 0x3f) << 1);
|
||||
|
||||
save_pc = current_pc;
|
||||
|
|
@ -455,33 +627,33 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
|
|||
break; /* Ran into end of prologue */
|
||||
}
|
||||
|
||||
else if ((insn & 0xffe0) == ((SP_REGNUM << 11) | 0x0240)) /* add <imm>,sp */
|
||||
else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240)) /* add <imm>,sp */
|
||||
pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10;
|
||||
else if (insn == ((SP_REGNUM << 11) | 0x0600 | SP_REGNUM)) /* addi <imm>,sp,sp */
|
||||
else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM)) /* addi <imm>,sp,sp */
|
||||
pi->frameoffset += insn2;
|
||||
else if (insn == ((FP_RAW_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
|
||||
else if (insn == ((E_FP_RAW_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,fp */
|
||||
{
|
||||
fp_used = 1;
|
||||
pi->framereg = FP_RAW_REGNUM;
|
||||
pi->framereg = E_FP_RAW_REGNUM;
|
||||
}
|
||||
|
||||
else if (insn == ((R12_REGNUM << 11) | 0x0640 | R0_REGNUM)) /* movhi hi(const),r0,r12 */
|
||||
else if (insn == ((E_R12_REGNUM << 11) | 0x0640 | E_R0_REGNUM)) /* movhi hi(const),r0,r12 */
|
||||
r12_tmp = insn2 << 16;
|
||||
else if (insn == ((R12_REGNUM << 11) | 0x0620 | R12_REGNUM)) /* movea lo(const),r12,r12 */
|
||||
else if (insn == ((E_R12_REGNUM << 11) | 0x0620 | E_R12_REGNUM)) /* movea lo(const),r12,r12 */
|
||||
r12_tmp += insn2;
|
||||
else if (insn == ((SP_REGNUM << 11) | 0x01c0 | R12_REGNUM) && r12_tmp) /* add r12,sp */
|
||||
else if (insn == ((E_SP_REGNUM << 11) | 0x01c0 | E_R12_REGNUM) && r12_tmp) /* add r12,sp */
|
||||
pi->frameoffset = r12_tmp;
|
||||
else if (insn == ((EP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,ep */
|
||||
else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,ep */
|
||||
ep_used = 1;
|
||||
else if (insn == ((EP_REGNUM << 11) | 0x0000 | R1_REGNUM)) /* mov r1,ep */
|
||||
else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_R1_REGNUM)) /* mov r1,ep */
|
||||
ep_used = 0;
|
||||
else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|
||||
else if (((insn & 0x07ff) == (0x0760 | E_SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|
||||
|| (fp_used
|
||||
&& (insn & 0x07ff) == (0x0760 | FP_RAW_REGNUM))) /* st.w <reg>,<offset>[fp] */
|
||||
&& (insn & 0x07ff) == (0x0760 | E_FP_RAW_REGNUM))) /* st.w <reg>,<offset>[fp] */
|
||||
&& pifsr
|
||||
&& (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM)
|
||||
|| (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM)
|
||||
|| (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM)))
|
||||
&& (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
|
||||
|| (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
|
||||
|| (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
|
||||
{
|
||||
pifsr->reg = reg;
|
||||
pifsr->offset = insn2 & ~1;
|
||||
|
|
@ -495,9 +667,9 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
|
|||
else if (ep_used /* sst.w <reg>,<offset>[ep] */
|
||||
&& ((insn & 0x0781) == 0x0501)
|
||||
&& pifsr
|
||||
&& (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM)
|
||||
|| (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM)
|
||||
|| (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM)))
|
||||
&& (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
|
||||
|| (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
|
||||
|| (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
|
||||
{
|
||||
pifsr->reg = reg;
|
||||
pifsr->offset = (insn & 0x007e) << 1;
|
||||
|
|
@ -536,68 +708,25 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
|
|||
return current_pc;
|
||||
}
|
||||
|
||||
void
|
||||
v850_frame_init_saved_regs (struct frame_info *fi)
|
||||
/* Function: find_callers_reg
|
||||
Find REGNUM on the stack. Otherwise, it's in an active register.
|
||||
One thing we might want to do here is to check REGNUM against the
|
||||
clobber mask, and somehow flag it as invalid if it isn't saved on
|
||||
the stack somewhere. This would provide a graceful failure mode
|
||||
when trying to get the value of caller-saves registers for an inner
|
||||
frame. */
|
||||
|
||||
CORE_ADDR
|
||||
v850_find_callers_reg (struct frame_info *fi, int regnum)
|
||||
{
|
||||
struct prologue_info pi;
|
||||
struct pifsr pifsrs[NUM_REGS + 1], *pifsr;
|
||||
CORE_ADDR func_addr, func_end;
|
||||
for (; fi; fi = fi->next)
|
||||
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
|
||||
return generic_read_register_dummy (fi->pc, fi->frame, regnum);
|
||||
else if (fi->saved_regs[regnum] != 0)
|
||||
return read_memory_unsigned_integer (fi->saved_regs[regnum],
|
||||
v850_register_raw_size (regnum));
|
||||
|
||||
if (!fi->saved_regs)
|
||||
{
|
||||
frame_saved_regs_zalloc (fi);
|
||||
|
||||
/* The call dummy doesn't save any registers on the stack, so we
|
||||
can return now. */
|
||||
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
|
||||
return;
|
||||
|
||||
/* Find the beginning of this function, so we can analyze its
|
||||
prologue. */
|
||||
if (find_pc_partial_function (fi->pc, NULL, &func_addr, &func_end))
|
||||
{
|
||||
pi.pifsrs = pifsrs;
|
||||
|
||||
v850_scan_prologue (fi->pc, &pi);
|
||||
|
||||
if (!fi->next && pi.framereg == SP_REGNUM)
|
||||
fi->frame = read_register (pi.framereg) - pi.frameoffset;
|
||||
|
||||
for (pifsr = pifsrs; pifsr->framereg; pifsr++)
|
||||
{
|
||||
fi->saved_regs[pifsr->reg] = pifsr->offset + fi->frame;
|
||||
|
||||
if (pifsr->framereg == SP_REGNUM)
|
||||
fi->saved_regs[pifsr->reg] += pi.frameoffset;
|
||||
}
|
||||
}
|
||||
/* Else we're out of luck (can't debug completely stripped code).
|
||||
FIXME. */
|
||||
}
|
||||
}
|
||||
|
||||
/* Function: init_extra_frame_info
|
||||
Setup the frame's frame pointer, pc, and frame addresses for saved
|
||||
registers. Most of the work is done in scan_prologue().
|
||||
|
||||
Note that when we are called for the last frame (currently active frame),
|
||||
that fi->pc and fi->frame will already be setup. However, fi->frame will
|
||||
be valid only if this routine uses FP. For previous frames, fi-frame will
|
||||
always be correct (since that is derived from v850_frame_chain ()).
|
||||
|
||||
We can be called with the PC in the call dummy under two circumstances.
|
||||
First, during normal backtracing, second, while figuring out the frame
|
||||
pointer just prior to calling the target function (see run_stack_dummy). */
|
||||
|
||||
void
|
||||
v850_init_extra_frame_info (struct frame_info *fi)
|
||||
{
|
||||
struct prologue_info pi;
|
||||
|
||||
if (fi->next)
|
||||
fi->pc = FRAME_SAVED_PC (fi->next);
|
||||
|
||||
v850_frame_init_saved_regs (fi);
|
||||
return read_register (regnum);
|
||||
}
|
||||
|
||||
/* Function: frame_chain
|
||||
|
|
@ -616,7 +745,7 @@ v850_frame_chain (struct frame_info *fi)
|
|||
/* First, find out who called us */
|
||||
callers_pc = FRAME_SAVED_PC (fi);
|
||||
/* If caller is a call-dummy, then our FP bears no relation to his FP! */
|
||||
fp = v850_find_callers_reg (fi, FP_RAW_REGNUM);
|
||||
fp = v850_find_callers_reg (fi, E_FP_RAW_REGNUM);
|
||||
if (PC_IN_CALL_DUMMY (callers_pc, fp, fp))
|
||||
return fp; /* caller is call-dummy: return oldest value of FP */
|
||||
|
||||
|
|
@ -629,33 +758,12 @@ v850_frame_chain (struct frame_info *fi)
|
|||
if (pi.start_function)
|
||||
return 0; /* Don't chain beyond the start function */
|
||||
|
||||
if (pi.framereg == FP_RAW_REGNUM)
|
||||
if (pi.framereg == E_FP_RAW_REGNUM)
|
||||
return v850_find_callers_reg (fi, pi.framereg);
|
||||
|
||||
return fi->frame - pi.frameoffset;
|
||||
}
|
||||
|
||||
/* Function: find_callers_reg
|
||||
Find REGNUM on the stack. Otherwise, it's in an active register.
|
||||
One thing we might want to do here is to check REGNUM against the
|
||||
clobber mask, and somehow flag it as invalid if it isn't saved on
|
||||
the stack somewhere. This would provide a graceful failure mode
|
||||
when trying to get the value of caller-saves registers for an inner
|
||||
frame. */
|
||||
|
||||
CORE_ADDR
|
||||
v850_find_callers_reg (struct frame_info *fi, int regnum)
|
||||
{
|
||||
for (; fi; fi = fi->next)
|
||||
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
|
||||
return generic_read_register_dummy (fi->pc, fi->frame, regnum);
|
||||
else if (fi->saved_regs[regnum] != 0)
|
||||
return read_memory_unsigned_integer (fi->saved_regs[regnum],
|
||||
REGISTER_RAW_SIZE (regnum));
|
||||
|
||||
return read_register (regnum);
|
||||
}
|
||||
|
||||
/* Function: skip_prologue
|
||||
Return the address of the first code past the prologue of the function. */
|
||||
|
||||
|
|
@ -690,23 +798,24 @@ v850_skip_prologue (CORE_ADDR pc)
|
|||
command, or the call dummy breakpoint gets hit. */
|
||||
|
||||
void
|
||||
v850_pop_frame (struct frame_info *frame)
|
||||
v850_pop_frame (void)
|
||||
{
|
||||
struct frame_info *frame = get_current_frame ();
|
||||
int regnum;
|
||||
|
||||
if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
|
||||
generic_pop_dummy_frame ();
|
||||
else
|
||||
{
|
||||
write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
|
||||
write_register (E_PC_REGNUM, FRAME_SAVED_PC (frame));
|
||||
|
||||
for (regnum = 0; regnum < NUM_REGS; regnum++)
|
||||
for (regnum = 0; regnum < E_NUM_REGS; regnum++)
|
||||
if (frame->saved_regs[regnum] != 0)
|
||||
write_register (regnum,
|
||||
read_memory_unsigned_integer (frame->saved_regs[regnum],
|
||||
REGISTER_RAW_SIZE (regnum)));
|
||||
v850_register_raw_size (regnum)));
|
||||
|
||||
write_register (SP_REGNUM, FRAME_FP (frame));
|
||||
write_register (E_SP_REGNUM, FRAME_FP (frame));
|
||||
}
|
||||
|
||||
flush_cached_frames ();
|
||||
|
|
@ -725,7 +834,7 @@ v850_pop_frame (struct frame_info *frame)
|
|||
|
||||
CORE_ADDR
|
||||
v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
|
||||
unsigned char struct_return, CORE_ADDR struct_addr)
|
||||
int struct_return, CORE_ADDR struct_addr)
|
||||
{
|
||||
int argreg;
|
||||
int argnum;
|
||||
|
|
@ -741,7 +850,7 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
|
|||
sp -= len; /* possibly over-allocating, but it works... */
|
||||
/* (you might think we could allocate 16 bytes */
|
||||
/* less, but the ABI seems to use it all! ) */
|
||||
argreg = ARG0_REGNUM;
|
||||
argreg = E_ARG0_REGNUM;
|
||||
|
||||
/* the struct_return pointer occupies the first parameter-passing reg */
|
||||
if (struct_return)
|
||||
|
|
@ -759,7 +868,7 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
|
|||
{
|
||||
int len;
|
||||
char *val;
|
||||
char valbuf[REGISTER_RAW_SIZE (ARG0_REGNUM)];
|
||||
char valbuf[v850_register_raw_size (E_ARG0_REGNUM)];
|
||||
|
||||
if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT
|
||||
&& TYPE_LENGTH (VALUE_TYPE (*args)) > 8)
|
||||
|
|
@ -775,15 +884,15 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
|
|||
}
|
||||
|
||||
while (len > 0)
|
||||
if (argreg <= ARGLAST_REGNUM)
|
||||
if (argreg <= E_ARGLAST_REGNUM)
|
||||
{
|
||||
CORE_ADDR regval;
|
||||
|
||||
regval = extract_address (val, REGISTER_RAW_SIZE (argreg));
|
||||
regval = extract_address (val, v850_register_raw_size (argreg));
|
||||
write_register (argreg, regval);
|
||||
|
||||
len -= REGISTER_RAW_SIZE (argreg);
|
||||
val += REGISTER_RAW_SIZE (argreg);
|
||||
len -= v850_register_raw_size (argreg);
|
||||
val += v850_register_raw_size (argreg);
|
||||
argreg++;
|
||||
}
|
||||
else
|
||||
|
|
@ -806,12 +915,12 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
|
|||
CORE_ADDR
|
||||
v850_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
|
||||
{
|
||||
write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ());
|
||||
write_register (E_RP_REGNUM, CALL_DUMMY_ADDRESS ());
|
||||
return sp;
|
||||
}
|
||||
|
||||
/* Function: frame_saved_pc
|
||||
Find the caller of this frame. We do this by seeing if RP_REGNUM
|
||||
Find the caller of this frame. We do this by seeing if E_RP_REGNUM
|
||||
is saved in the stack anywhere, otherwise we get it from the
|
||||
registers. If the inner frame is a dummy frame, return its PC
|
||||
instead of RP, because that's where "caller" of the dummy-frame
|
||||
|
|
@ -821,9 +930,9 @@ CORE_ADDR
|
|||
v850_frame_saved_pc (struct frame_info *fi)
|
||||
{
|
||||
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
|
||||
return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM);
|
||||
return generic_read_register_dummy (fi->pc, fi->frame, E_PC_REGNUM);
|
||||
else
|
||||
return v850_find_callers_reg (fi, RP_REGNUM);
|
||||
return v850_find_callers_reg (fi, E_RP_REGNUM);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -834,7 +943,7 @@ v850_frame_saved_pc (struct frame_info *fi)
|
|||
trap
|
||||
*/
|
||||
|
||||
int
|
||||
void
|
||||
v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs,
|
||||
struct value **args, struct type *type, int gcc_p)
|
||||
{
|
||||
|
|
@ -846,12 +955,122 @@ v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs,
|
|||
|
||||
store_unsigned_integer ((unsigned int *) &dummy[2], 2, offset24 & 0xffff);
|
||||
store_unsigned_integer ((unsigned int *) &dummy[0], 2, offset24 >> 16);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static CORE_ADDR
|
||||
v850_saved_pc_after_call (struct frame_info *ignore)
|
||||
{
|
||||
return read_register (E_RP_REGNUM);
|
||||
}
|
||||
|
||||
static void
|
||||
v850_extract_return_value (struct type *type, char *regbuf, char *valbuf)
|
||||
{
|
||||
memcpy (valbuf, regbuf + v850_register_byte (E_V0_REGNUM),
|
||||
TYPE_LENGTH (type));
|
||||
}
|
||||
|
||||
const static unsigned char *
|
||||
v850_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
|
||||
{
|
||||
static unsigned char breakpoint[] = { 0x85, 0x05 };
|
||||
*lenptr = sizeof (breakpoint);
|
||||
return breakpoint;
|
||||
}
|
||||
|
||||
static CORE_ADDR
|
||||
v850_extract_struct_value_address (char *regbuf)
|
||||
{
|
||||
return extract_address (regbuf + v850_register_byte (E_V0_REGNUM),
|
||||
v850_register_raw_size (E_V0_REGNUM));
|
||||
}
|
||||
|
||||
static void
|
||||
v850_store_return_value (struct type *type, char *valbuf)
|
||||
{
|
||||
write_register_bytes(v850_register_byte (E_V0_REGNUM), valbuf,
|
||||
TYPE_LENGTH (type));
|
||||
}
|
||||
|
||||
static void
|
||||
v850_frame_init_saved_regs (struct frame_info *fi)
|
||||
{
|
||||
struct prologue_info pi;
|
||||
struct pifsr pifsrs[E_NUM_REGS + 1], *pifsr;
|
||||
CORE_ADDR func_addr, func_end;
|
||||
|
||||
if (!fi->saved_regs)
|
||||
{
|
||||
frame_saved_regs_zalloc (fi);
|
||||
|
||||
/* The call dummy doesn't save any registers on the stack, so we
|
||||
can return now. */
|
||||
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
|
||||
return;
|
||||
|
||||
/* Find the beginning of this function, so we can analyze its
|
||||
prologue. */
|
||||
if (find_pc_partial_function (fi->pc, NULL, &func_addr, &func_end))
|
||||
{
|
||||
pi.pifsrs = pifsrs;
|
||||
|
||||
v850_scan_prologue (fi->pc, &pi);
|
||||
|
||||
if (!fi->next && pi.framereg == E_SP_REGNUM)
|
||||
fi->frame = read_register (pi.framereg) - pi.frameoffset;
|
||||
|
||||
for (pifsr = pifsrs; pifsr->framereg; pifsr++)
|
||||
{
|
||||
fi->saved_regs[pifsr->reg] = pifsr->offset + fi->frame;
|
||||
|
||||
if (pifsr->framereg == E_SP_REGNUM)
|
||||
fi->saved_regs[pifsr->reg] += pi.frameoffset;
|
||||
}
|
||||
}
|
||||
/* Else we're out of luck (can't debug completely stripped code).
|
||||
FIXME. */
|
||||
}
|
||||
}
|
||||
|
||||
/* Function: init_extra_frame_info
|
||||
Setup the frame's frame pointer, pc, and frame addresses for saved
|
||||
registers. Most of the work is done in scan_prologue().
|
||||
|
||||
Note that when we are called for the last frame (currently active frame),
|
||||
that fi->pc and fi->frame will already be setup. However, fi->frame will
|
||||
be valid only if this routine uses FP. For previous frames, fi-frame will
|
||||
always be correct (since that is derived from v850_frame_chain ()).
|
||||
|
||||
We can be called with the PC in the call dummy under two circumstances.
|
||||
First, during normal backtracing, second, while figuring out the frame
|
||||
pointer just prior to calling the target function (see run_stack_dummy). */
|
||||
|
||||
static void
|
||||
v850_init_extra_frame_info (int fromleaf, struct frame_info *fi)
|
||||
{
|
||||
struct prologue_info pi;
|
||||
|
||||
if (fi->next)
|
||||
fi->pc = FRAME_SAVED_PC (fi->next);
|
||||
|
||||
v850_frame_init_saved_regs (fi);
|
||||
}
|
||||
|
||||
static void
|
||||
v850_store_struct_return (CORE_ADDR a, CORE_ADDR b)
|
||||
{
|
||||
}
|
||||
|
||||
static CORE_ADDR
|
||||
v850_target_read_fp (void)
|
||||
{
|
||||
return read_register (E_FP_RAW_REGNUM);
|
||||
}
|
||||
|
||||
static struct gdbarch *
|
||||
v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
|
||||
{
|
||||
static LONGEST call_dummy_words[1] = { 0 };
|
||||
struct gdbarch_tdep *tdep = NULL;
|
||||
struct gdbarch *gdbarch;
|
||||
int i;
|
||||
|
|
@ -865,22 +1084,109 @@ v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
|
|||
tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
|
||||
#endif
|
||||
|
||||
/* Change the register names based on the current machine type. */
|
||||
if (info.bfd_arch_info->arch != bfd_arch_v850)
|
||||
return 0;
|
||||
|
||||
gdbarch = gdbarch_alloc (&info, 0);
|
||||
|
||||
/* Change the register names based on the current machine type. */
|
||||
for (i = 0; v850_processor_type_table[i].regnames != NULL; i++)
|
||||
{
|
||||
if (v850_processor_type_table[i].mach == info.bfd_arch_info->mach)
|
||||
{
|
||||
v850_register_names = v850_processor_type_table[i].regnames;
|
||||
tm_print_insn_info.mach = info.bfd_arch_info->mach;
|
||||
break;
|
||||
}
|
||||
{
|
||||
v850_register_names = v850_processor_type_table[i].regnames;
|
||||
tm_print_insn_info.mach = info.bfd_arch_info->mach;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Basic register fields and methods.
|
||||
*/
|
||||
set_gdbarch_num_regs (gdbarch, E_NUM_REGS);
|
||||
set_gdbarch_num_pseudo_regs (gdbarch, 0);
|
||||
set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);
|
||||
set_gdbarch_fp_regnum (gdbarch, E_FP_REGNUM);
|
||||
set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);
|
||||
set_gdbarch_register_name (gdbarch, v850_register_name);
|
||||
set_gdbarch_register_size (gdbarch, v850_reg_size);
|
||||
set_gdbarch_register_bytes (gdbarch, E_ALL_REGS_SIZE);
|
||||
set_gdbarch_register_byte (gdbarch, v850_register_byte);
|
||||
set_gdbarch_register_raw_size (gdbarch, v850_register_raw_size);
|
||||
set_gdbarch_max_register_raw_size (gdbarch, v850_reg_size);
|
||||
set_gdbarch_register_virtual_size (gdbarch, v850_register_raw_size);
|
||||
set_gdbarch_max_register_virtual_size (gdbarch, v850_reg_size);
|
||||
set_gdbarch_register_virtual_type (gdbarch, v850_reg_virtual_type);
|
||||
|
||||
set_gdbarch_read_fp (gdbarch, v850_target_read_fp);
|
||||
|
||||
/*
|
||||
* Frame Info
|
||||
*/
|
||||
set_gdbarch_init_extra_frame_info (gdbarch, v850_init_extra_frame_info);
|
||||
set_gdbarch_frame_init_saved_regs (gdbarch, v850_frame_init_saved_regs);
|
||||
set_gdbarch_frame_chain (gdbarch, v850_frame_chain);
|
||||
set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
|
||||
set_gdbarch_saved_pc_after_call (gdbarch, v850_saved_pc_after_call);
|
||||
set_gdbarch_frame_saved_pc (gdbarch, v850_frame_saved_pc);
|
||||
set_gdbarch_skip_prologue (gdbarch, v850_skip_prologue);
|
||||
set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
|
||||
set_gdbarch_frame_args_address (gdbarch, default_frame_address);
|
||||
set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
|
||||
|
||||
/*
|
||||
* Miscelany
|
||||
*/
|
||||
/* Stack grows up. */
|
||||
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
|
||||
/* PC stops zero byte after a trap instruction
|
||||
(which means: exactly on trap instruction). */
|
||||
set_gdbarch_decr_pc_after_break (gdbarch, 0);
|
||||
/* This value is almost never non-zero... */
|
||||
set_gdbarch_function_start_offset (gdbarch, 0);
|
||||
/* This value is almost never non-zero... */
|
||||
set_gdbarch_frame_args_skip (gdbarch, 0);
|
||||
/* OK to default this value to 'unknown'. */
|
||||
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
|
||||
/* W/o prototype, coerce float args to double. */
|
||||
set_gdbarch_coerce_float_to_double (gdbarch, standard_coerce_float_to_double);
|
||||
|
||||
/*
|
||||
* Call Dummies
|
||||
*
|
||||
* These values and methods are used when gdb calls a target function. */
|
||||
set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
|
||||
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
|
||||
set_gdbarch_push_return_address (gdbarch, v850_push_return_address);
|
||||
set_gdbarch_extract_return_value (gdbarch, v850_extract_return_value);
|
||||
set_gdbarch_push_arguments (gdbarch, v850_push_arguments);
|
||||
set_gdbarch_pop_frame (gdbarch, v850_pop_frame);
|
||||
set_gdbarch_store_struct_return (gdbarch, v850_store_struct_return);
|
||||
set_gdbarch_store_return_value (gdbarch, v850_store_return_value);
|
||||
set_gdbarch_extract_struct_value_address (gdbarch, v850_extract_struct_value_address);
|
||||
set_gdbarch_use_struct_convention (gdbarch, v850_use_struct_convention);
|
||||
set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
|
||||
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
|
||||
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
|
||||
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
|
||||
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
|
||||
set_gdbarch_call_dummy_length (gdbarch, 0);
|
||||
set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
|
||||
set_gdbarch_call_dummy_p (gdbarch, 1);
|
||||
set_gdbarch_call_dummy_words (gdbarch, call_dummy_nil);
|
||||
set_gdbarch_sizeof_call_dummy_words (gdbarch, 0);
|
||||
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
|
||||
/* set_gdbarch_call_dummy_stack_adjust */
|
||||
set_gdbarch_fix_call_dummy (gdbarch, v850_fix_call_dummy);
|
||||
set_gdbarch_breakpoint_from_pc (gdbarch, v850_breakpoint_from_pc);
|
||||
|
||||
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
|
||||
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
|
||||
set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
|
||||
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
|
||||
|
||||
set_gdbarch_extra_stack_alignment_needed (gdbarch, 0);
|
||||
|
||||
return gdbarch;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue