Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#include "regcache.h"
-#include "symtab.h" /* For namespace_enum. */
-#include "symfile.h" /* For entry_point_address(). */
-
-#define NUM_REGS 66
-
-#define REGISTER_NAMES \
-{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
- "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
- \
- "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", \
- "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", \
- "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", \
- "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31", \
- \
- "pc", "fp" }
-
-/* Initializer for an array of names of registers.
- Entries beyond the first NUM_REGS are ignored. */
-
-extern char **v850_register_names;
-#define REGISTER_NAME(i) v850_register_names[i]
-
-
-#define REGISTER_BYTES (NUM_REGS * 4)
-
-#define REGISTER_SIZE 4
-#define MAX_REGISTER_RAW_SIZE 4
-
-#define R0_REGNUM 0
-#define R1_REGNUM 1
-#define SAVE1_START_REGNUM 2
-#define SAVE1_END_REGNUM 2
-#define SP_REGNUM 3
-#define ARG0_REGNUM 6
-#define ARGLAST_REGNUM 9
-#define V0_REGNUM 10
-#define V1_REGNUM 11
-#define R12_REGNUM 12
-#define SAVE2_START_REGNUM 20
-#define SAVE2_END_REGNUM 29
-#define EP_REGNUM 30
-#define SAVE3_START_REGNUM 31
-#define SAVE3_END_REGNUM 31
-#define RP_REGNUM 31
-#define SR0_REGNUM 32
-#define PS_REGNUM (SR0_REGNUM+5)
-#define CTBP_REGNUM (SR0_REGNUM+20)
-#define PC_REGNUM 64
-#define FP_REGNUM 65
-#define FP_RAW_REGNUM 29
-
-#define TARGET_READ_FP() read_register (FP_RAW_REGNUM)
-
-#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
-
-#define REGISTER_BYTE(REG) ((REG) * 4)
-#define REGISTER_VIRTUAL_SIZE(REG) 4
-#define REGISTER_RAW_SIZE(REG) 4
-
-#define MAX_REGISTER_VIRTUAL_SIZE 4
-
-#define BREAKPOINT {0x85, 0x05} /* little-ended */
-
-#define FUNCTION_START_OFFSET 0
-
-#define DECR_PC_AFTER_BREAK 0
-
-#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
-
-#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)
-
-struct frame_info;
-struct frame_saved_regs;
-struct type;
-struct value;
-
-extern void v850_init_extra_frame_info (struct frame_info *fi);
-#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) v850_init_extra_frame_info (fi)
-#define INIT_FRAME_PC /* Not necessary */
-
-extern void v850_frame_init_saved_regs (struct frame_info *fi);
-#define FRAME_INIT_SAVED_REGS(FI) v850_frame_init_saved_regs (FI)
-
-extern CORE_ADDR v850_frame_chain (struct frame_info *fi);
-#define FRAME_CHAIN(fi) v850_frame_chain (fi)
-#define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid (FP, FI)
-
-extern CORE_ADDR v850_find_callers_reg (struct frame_info *fi, int regnum);
-extern CORE_ADDR v850_frame_saved_pc (struct frame_info *);
-#define FRAME_SAVED_PC(FI) (v850_frame_saved_pc (FI))
-
-#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
- memcpy (VALBUF, REGBUF + REGISTER_BYTE (V0_REGNUM), TYPE_LENGTH (TYPE))
-
-#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
- REGISTER_RAW_SIZE (V0_REGNUM))
-
-#define STORE_RETURN_VALUE(TYPE, VALBUF) \
- write_register_bytes(REGISTER_BYTE (V0_REGNUM), VALBUF, TYPE_LENGTH (TYPE));
-
-extern CORE_ADDR v850_skip_prologue (CORE_ADDR pc);
-#define SKIP_PROLOGUE(pc) (v850_skip_prologue (pc))
-
-#define FRAME_ARGS_SKIP 0
-
-#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
-#define FRAME_NUM_ARGS(fi) (-1)
-
-extern void v850_pop_frame (struct frame_info *frame);
-#define POP_FRAME v850_pop_frame (get_current_frame ())
-
-#define USE_GENERIC_DUMMY_FRAMES 1
-#define CALL_DUMMY {0}
-#define CALL_DUMMY_START_OFFSET (0)
-#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
-#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
-#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
-#define CALL_DUMMY_ADDRESS() entry_point_address ()
-extern CORE_ADDR v850_push_return_address (CORE_ADDR, CORE_ADDR);
-#define PUSH_RETURN_ADDRESS(PC, SP) v850_push_return_address (PC, SP)
-
-
-#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
-
-extern CORE_ADDR
-v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- unsigned char struct_return, CORE_ADDR struct_addr);
-#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
- (v850_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
-
-#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP)
-
-
-#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
-
-extern use_struct_convention_fn v850_use_struct_convention;
-#define USE_STRUCT_CONVENTION(GCC_P, TYPE) v850_use_struct_convention (GCC_P, TYPE);
-
-/* override the default get_saved_register function with
- one that takes account of generic CALL_DUMMY frames */
-#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
- generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
-
-/* Define this for Wingdb */
-
-#define TARGET_V850
+#define GDB_MULTI_ARCH 2
/* Target-dependent code for the NEC V850 for GDB, the GNU debugger.
- Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright 1996, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
#include "symfile.h"
#include "arch-utils.h"
#include "regcache.h"
+#include "symtab.h"
+struct gdbarch_tdep
+{
+ /* gdbarch target dependent data here. Currently unused for v850. */
+};
+
+/* Extra info which is saved in each frame_info. */
+struct frame_extra_info
+{
+};
-static char *v850_generic_reg_names[] = REGISTER_NAMES;
+enum {
+ E_R0_REGNUM,
+ E_R1_REGNUM,
+ E_R2_REGNUM, E_SAVE1_START_REGNUM = E_R2_REGNUM, E_SAVE1_END_REGNUM = E_R2_REGNUM,
+ E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM,
+ E_R4_REGNUM,
+ E_R5_REGNUM,
+ E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM,
+ E_R7_REGNUM,
+ E_R8_REGNUM,
+ E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM,
+ E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM,
+ E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM,
+ E_R12_REGNUM,
+ E_R13_REGNUM,
+ E_R14_REGNUM,
+ E_R15_REGNUM,
+ E_R16_REGNUM,
+ E_R17_REGNUM,
+ E_R18_REGNUM,
+ E_R19_REGNUM,
+ E_R20_REGNUM, E_SAVE2_START_REGNUM = E_R20_REGNUM,
+ E_R21_REGNUM,
+ E_R22_REGNUM,
+ E_R23_REGNUM,
+ E_R24_REGNUM,
+ E_R25_REGNUM,
+ E_R26_REGNUM,
+ E_R27_REGNUM,
+ E_R28_REGNUM,
+ E_R29_REGNUM, E_SAVE2_END_REGNUM = E_R29_REGNUM, E_FP_RAW_REGNUM = E_R29_REGNUM,
+ E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM,
+ E_R31_REGNUM, E_SAVE3_START_REGNUM = E_R31_REGNUM, E_SAVE3_END_REGNUM = E_R31_REGNUM, E_RP_REGNUM = E_R31_REGNUM,
+ E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM,
+ E_R33_REGNUM,
+ E_R34_REGNUM,
+ E_R35_REGNUM,
+ E_R36_REGNUM,
+ E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM,
+ E_R38_REGNUM,
+ E_R39_REGNUM,
+ E_R40_REGNUM,
+ E_R41_REGNUM,
+ E_R42_REGNUM,
+ E_R43_REGNUM,
+ E_R44_REGNUM,
+ E_R45_REGNUM,
+ E_R46_REGNUM,
+ E_R47_REGNUM,
+ E_R48_REGNUM,
+ E_R49_REGNUM,
+ E_R50_REGNUM,
+ E_R51_REGNUM,
+ E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM,
+ E_R53_REGNUM,
+ E_R54_REGNUM,
+ E_R55_REGNUM,
+ E_R56_REGNUM,
+ E_R57_REGNUM,
+ E_R58_REGNUM,
+ E_R59_REGNUM,
+ E_R60_REGNUM,
+ E_R61_REGNUM,
+ E_R62_REGNUM,
+ E_R63_REGNUM,
+ E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM,
+ E_R65_REGNUM, E_FP_REGNUM = E_R65_REGNUM,
+ E_NUM_REGS
+};
+
+enum
+{
+ v850_reg_size = 4
+};
+
+/* Size of all registers as a whole. */
+enum
+{
+ E_ALL_REGS_SIZE = (E_NUM_REGS) * v850_reg_size
+};
+
+static LONGEST call_dummy_nil[] = {0};
+
+static char *v850_generic_reg_names[] =
+{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+ "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
+ "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
+ "pc", "fp"
+};
static char *v850e_reg_names[] =
{
static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs);
+/* Function: v850_register_name
+ Returns the name of the v850/v850e register N. */
+
+static char *
+v850_register_name (int regnum)
+{
+ if (regnum < 0 || regnum >= E_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "v850_register_name: illegal register number %d",
+ regnum);
+ else
+ return v850_register_names[regnum];
+
+}
+
+/* Function: v850_register_byte
+ Returns the byte position in the register cache for register N. */
+
+static int
+v850_register_byte (int regnum)
+{
+ if (regnum < 0 || regnum >= E_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "v850_register_byte: illegal register number %d",
+ regnum);
+ else
+ return regnum * v850_reg_size;
+}
+
+/* Function: v850_register_raw_size
+ Returns the number of bytes occupied by the register on the target. */
+
+static int
+v850_register_raw_size (int regnum)
+{
+ if (regnum < 0 || regnum >= E_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "v850_register_raw_size: illegal register number %d",
+ regnum);
+ /* Only the PC has 4 Byte, all other registers 2 Byte. */
+ else
+ return v850_reg_size;
+}
+
+/* Function: v850_register_virtual_size
+ Returns the number of bytes occupied by the register as represented
+ internally by gdb. */
+
+static int
+v850_register_virtual_size (int regnum)
+{
+ return v850_register_raw_size (regnum);
+}
+
+/* Function: v850_reg_virtual_type
+ Returns the default type for register N. */
+
+static struct type *
+v850_reg_virtual_type (int regnum)
+{
+ if (regnum < 0 || regnum >= E_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "v850_register_virtual_type: illegal register number %d",
+ regnum);
+ else if (regnum == E_PC_REGNUM)
+ return builtin_type_uint32;
+ else
+ return builtin_type_int32;
+}
/* Should call_function allocate stack space for a struct return? */
int
it to the immediate value used to adjust SP. */
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
- offset += REGISTER_RAW_SIZE (regtable[i].regno);
+ offset += v850_register_raw_size (reg_table[i].regno);
pi->frameoffset -= offset;
/* Calculate the offsets of the registers relative to the value
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
- offset -= REGISTER_RAW_SIZE (reg);
+ offset -= v850_register_raw_size (reg);
pifsr->reg = reg;
pifsr->offset = offset;
pifsr->cur_frameoffset = pi->frameoffset;
long offset = 0;
static struct reg_list pushml_reg_table[] =
{
- {0x80000, PS_REGNUM}, /* PSW */
+ {0x80000, E_PS_REGNUM}, /* PSW */
{0x40000, 1}, /* r1 */
{0x20000, 2}, /* r2 */
{0x10000, 3}, /* r3 */
it to the immediate value used to adjust SP. */
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
- offset += REGISTER_RAW_SIZE (regtable[i].regno);
+ offset += v850_register_raw_size (reg_table[i].regno);
pi->frameoffset -= offset;
/* Calculate the offsets of the registers relative to the value
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
- offset -= REGISTER_RAW_SIZE (reg);
+ offset -= v850_register_raw_size (reg);
pifsr->reg = reg;
pifsr->offset = offset;
pifsr->cur_frameoffset = pi->frameoffset;
registers. */
pi->frameoffset = 0;
- pi->framereg = SP_REGNUM;
+ pi->framereg = E_SP_REGNUM;
fp_used = 0;
ep_used = 0;
pifsr = pi->pifsrs;
}
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;
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;
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;
return current_pc;
}
-void
-v850_frame_init_saved_regs (struct frame_info *fi)
-{
- struct prologue_info pi;
- struct pifsr pifsrs[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 == 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). */
+/* 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. */
-void
-v850_init_extra_frame_info (struct frame_info *fi)
+CORE_ADDR
+v850_find_callers_reg (struct frame_info *fi, int regnum)
{
- struct prologue_info pi;
-
- if (fi->next)
- fi->pc = FRAME_SAVED_PC (fi->next);
+ 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));
- v850_frame_init_saved_regs (fi);
+ return read_register (regnum);
}
/* Function: frame_chain
/* 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 */
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. */
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 ();
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;
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)
{
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)
}
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
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
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);
}
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)
{
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;
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;
}
projects / binutils-gdb.git / commitdiff