#include "gdbcore.h"
#include "symfile.h"
+
+static char *v850_generic_reg_names[] = REGISTER_NAMES;
+
+static char *v850e_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",
+ "ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
+ "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
+ "pc", "fp"
+};
+
+char **v850_register_names = v850_generic_reg_names;
+
+struct
+{
+ char **regnames;
+ int mach;
+} v850_processor_type_table[] =
+{
+ { v850_generic_reg_names, bfd_mach_v850 },
+ { v850e_reg_names, bfd_mach_v850e },
+ { v850e_reg_names, bfd_mach_v850ea },
+ { NULL, 0 }
+};
+
/* Info gleaned from scanning a function's prologue. */
struct pifsr /* Info about one saved reg */
return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 4);
}
+\f
+
+/* Structure for mapping bits in register lists to register numbers. */
+struct reg_list
+{
+ long mask;
+ int regno;
+};
+
+/* Helper function for v850_scan_prologue to handle prepare instruction. */
+
+static void
+handle_prepare (int insn, int insn2, CORE_ADDR *current_pc_ptr,
+ struct prologue_info *pi, struct pifsr **pifsr_ptr)
+
+{
+ CORE_ADDR current_pc = *current_pc_ptr;
+ struct pifsr *pifsr = *pifsr_ptr;
+ long next = insn2 & 0xffff;
+ long list12 = ((insn & 1) << 16) + (next & 0xffe0);
+ long offset = (insn & 0x3e) << 1;
+ static struct reg_list reg_table [] =
+ {
+ { 0x00800, 20 }, /* r20 */
+ { 0x00400, 21 }, /* r21 */
+ { 0x00200, 22 }, /* r22 */
+ { 0x00100, 23 }, /* r23 */
+ { 0x08000, 24 }, /* r24 */
+ { 0x04000, 25 }, /* r25 */
+ { 0x02000, 26 }, /* r26 */
+ { 0x01000, 27 }, /* r27 */
+ { 0x00080, 28 }, /* r28 */
+ { 0x00040, 29 }, /* r29 */
+ { 0x10000, 30 }, /* ep */
+ { 0x00020, 31 }, /* lp */
+ { 0, 0 } /* end of table */
+ };
+ int i;
+
+ if ((next & 0x1f) == 0x0b) /* skip imm16 argument */
+ current_pc += 2;
+ else if ((next & 0x1f) == 0x13) /* skip imm16 argument */
+ current_pc += 2;
+ else if ((next & 0x1f) == 0x1b) /* skip imm32 argument */
+ current_pc += 4;
+
+ /* Calculate the total size of the saved registers, and add it
+ 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);
+ pi->frameoffset -= offset;
+
+ /* Calculate the offsets of the registers relative to the value
+ the SP will have after the registers have been pushed and the
+ imm5 value has been subtracted from it. */
+ if (pifsr)
+ {
+ for (i = 0; reg_table[i].mask != 0; i++)
+ {
+ if (list12 & reg_table[i].mask)
+ {
+ int reg = reg_table[i].regno;
+ offset -= REGISTER_RAW_SIZE (reg);
+ pifsr->reg = reg;
+ pifsr->offset = offset;
+ pifsr->cur_frameoffset = pi->frameoffset;
+ #ifdef DEBUG
+ printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
+ #endif
+ pifsr++;
+ }
+ }
+ }
+#ifdef DEBUG
+ printf_filtered ("\tfound ctret after regsave func");
+#endif
+
+ /* Set result parameters. */
+ *current_pc_ptr = current_pc;
+ *pifsr_ptr = pifsr;
+}
+
+
+/* Helper function for v850_scan_prologue to handle pushm/pushl instructions.
+ FIXME: the SR bit of the register list is not supported; must check
+ that the compiler does not ever generate this bit. */
+
+static void
+handle_pushm (int insn, int insn2, struct prologue_info *pi,
+ struct pifsr **pifsr_ptr)
+
+{
+ struct pifsr *pifsr = *pifsr_ptr;
+ long list12 = ((insn & 0x0f) << 16) + (insn2 & 0xfff0);
+ long offset = 0;
+ static struct reg_list pushml_reg_table [] =
+ {
+ { 0x80000, PS_REGNUM }, /* PSW */
+ { 0x40000, 1 }, /* r1 */
+ { 0x20000, 2 }, /* r2 */
+ { 0x10000, 3 }, /* r3 */
+ { 0x00800, 4 }, /* r4 */
+ { 0x00400, 5 }, /* r5 */
+ { 0x00200, 6 }, /* r6 */
+ { 0x00100, 7 }, /* r7 */
+ { 0x08000, 8 }, /* r8 */
+ { 0x04000, 9 }, /* r9 */
+ { 0x02000, 10 }, /* r10 */
+ { 0x01000, 11 }, /* r11 */
+ { 0x00080, 12 }, /* r12 */
+ { 0x00040, 13 }, /* r13 */
+ { 0x00020, 14 }, /* r14 */
+ { 0x00010, 15 }, /* r15 */
+ { 0, 0 } /* end of table */
+ };
+ static struct reg_list pushmh_reg_table [] =
+ {
+ { 0x80000, 16 }, /* r16 */
+ { 0x40000, 17 }, /* r17 */
+ { 0x20000, 18 }, /* r18 */
+ { 0x10000, 19 }, /* r19 */
+ { 0x00800, 20 }, /* r20 */
+ { 0x00400, 21 }, /* r21 */
+ { 0x00200, 22 }, /* r22 */
+ { 0x00100, 23 }, /* r23 */
+ { 0x08000, 24 }, /* r24 */
+ { 0x04000, 25 }, /* r25 */
+ { 0x02000, 26 }, /* r26 */
+ { 0x01000, 27 }, /* r27 */
+ { 0x00080, 28 }, /* r28 */
+ { 0x00040, 29 }, /* r29 */
+ { 0x00010, 30 }, /* r30 */
+ { 0x00020, 31 }, /* r31 */
+ { 0, 0 } /* end of table */
+ };
+ struct reg_list *reg_table;
+ int i;
+
+ /* Is this a pushml or a pushmh? */
+ if ((insn2 & 7) == 1)
+ reg_table = pushml_reg_table;
+ else
+ reg_table = pushmh_reg_table;
+
+ /* Calculate the total size of the saved registers, and add it
+ 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);
+ pi->frameoffset -= offset;
+
+ /* Calculate the offsets of the registers relative to the value
+ the SP will have after the registers have been pushed and the
+ imm5 value is subtracted from it. */
+ if (pifsr)
+ {
+ for (i = 0; reg_table[i].mask != 0; i++)
+ {
+ if (list12 & reg_table[i].mask)
+ {
+ int reg = reg_table[i].regno;
+ offset -= REGISTER_RAW_SIZE (reg);
+ pifsr->reg = reg;
+ pifsr->offset = offset;
+ pifsr->cur_frameoffset = pi->frameoffset;
+ #ifdef DEBUG
+ printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
+ #endif
+ pifsr++;
+ }
+ }
+ }
+#ifdef DEBUG
+ printf_filtered ("\tfound ctret after regsave func");
+#endif
+
+ /* Set result parameters. */
+ *pifsr_ptr = pifsr;
+}
+
+
+
\f
/* Function: scan_prologue
Scan the prologue of the function that contains PC, and record what
int reg;
CORE_ADDR save_pc, save_end;
int regsave_func_p;
- int current_sp_size;
int r12_tmp;
/* First, figure out the bounds of the prologue so that we can limit the
(long)func_addr, (long)prologue_end);
#endif
- for (current_pc = func_addr; current_pc < prologue_end; current_pc += 2)
+ for (current_pc = func_addr; current_pc < prologue_end; )
{
- int insn;
+ int insn, insn2;
#ifdef DEBUG
printf_filtered ("0x%.8lx ", (long)current_pc);
#endif
insn = read_memory_unsigned_integer (current_pc, 2);
+ current_pc += 2;
+ if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */
+ {
+ insn2 = read_memory_unsigned_integer (current_pc, 2);
+ current_pc += 2;
+ }
if ((insn & 0xffc0) == ((10 << 11) | 0x0780) && !regsave_func_p)
{ /* jarl <func>,10 */
- long low_disp = read_memory_unsigned_integer (current_pc + 2, 2) & ~ (long) 1;
+ long low_disp = insn2 & ~ (long) 1;
long disp = (((((insn & 0x3f) << 16) + low_disp)
& ~ (long) 1) ^ 0x00200000) - 0x00200000;
save_pc = current_pc;
save_end = prologue_end;
regsave_func_p = 1;
- current_pc += disp - 2;
+ current_pc += disp - 4;
prologue_end = (current_pc
+ (2 * 3) /* moves to/from ep */
+ 4 /* addi <const>,sp,sp */
#endif
continue;
}
+ else if ((insn & 0xffc0) == 0x0200 && !regsave_func_p)
+ { /* callt <imm6> */
+ long ctbp = read_register (CTBP_REGNUM);
+ long adr = ctbp + ((insn & 0x3f) << 1);
+
+ save_pc = current_pc;
+ save_end = prologue_end;
+ regsave_func_p = 1;
+ current_pc = ctbp + (read_memory_unsigned_integer (adr, 2) & 0xffff);
+ prologue_end = (current_pc
+ + (2 * 3) /* prepare list2,imm5,sp/imm */
+ + 4 /* ctret */
+ + 20); /* slop area */
+
+#ifdef DEBUG
+ printf_filtered ("\tfound callt, ctbp = 0x%.8lx, adr = %.8lx, new pc = 0x%.8lx\n",
+ ctbp, adr, (long)current_pc);
+#endif
+ continue;
+ }
+ else if ((insn & 0xffc0) == 0x0780) /* prepare list2,imm5 */
+ {
+ handle_prepare (insn, insn2, ¤t_pc, pi, &pifsr);
+ continue;
+ }
+ else if (insn == 0x07e0 && regsave_func_p && insn2 == 0x0144)
+ { /* ctret after processing register save function */
+ current_pc = save_pc;
+ prologue_end = save_end;
+ regsave_func_p = 0;
+#ifdef DEBUG
+ printf_filtered ("\tfound ctret after regsave func");
+#endif
+ continue;
+ }
+ else if ((insn & 0xfff0) == 0x07e0 && (insn2 & 5) == 1)
+ { /* pushml, pushmh */
+ handle_pushm (insn, insn2, pi, &pifsr);
+ continue;
+ }
else if ((insn & 0xffe0) == 0x0060 && regsave_func_p)
{ /* jmp after processing register save function */
- current_pc = save_pc + 2;
+ current_pc = save_pc;
prologue_end = save_end;
regsave_func_p = 0;
#ifdef DEBUG
printf_filtered ("\tfound jmp after regsave func");
#endif
+ continue;
}
else if ((insn & 0x07c0) == 0x0780 /* jarl or jr */
|| (insn & 0xffe0) == 0x0060 /* jmp */
else if ((insn & 0xffe0) == ((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 */
- pi->frameoffset += read_memory_integer (current_pc + 2, 2);
+ pi->frameoffset += insn2;
else if (insn == ((FP_RAW_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
{
fp_used = 1;
}
else if (insn == ((R12_REGNUM << 11) | 0x0640 | R0_REGNUM)) /* movhi hi(const),r0,r12 */
- r12_tmp = read_memory_integer (current_pc + 2, 2) << 16;
+ r12_tmp = insn2 << 16;
else if (insn == ((R12_REGNUM << 11) | 0x0620 | R12_REGNUM)) /* movea lo(const),r12,r12 */
- r12_tmp += read_memory_integer (current_pc + 2, 2);
+ r12_tmp += insn2;
else if (insn == ((SP_REGNUM << 11) | 0x01c0 | R12_REGNUM) && r12_tmp) /* add r12,sp */
pi->frameoffset = r12_tmp;
else if (insn == ((EP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,ep */
|| (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM)))
{
pifsr->reg = reg;
- pifsr->offset = read_memory_integer (current_pc + 2, 2) & ~1;
+ pifsr->offset = insn2 & ~1;
pifsr->cur_frameoffset = pi->frameoffset;
#ifdef DEBUG
printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
pifsr++;
}
- if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */
- current_pc += 2;
-
#ifdef DEBUG
printf_filtered ("\n");
#endif
{
struct prologue_info pi;
struct pifsr pifsrs[NUM_REGS + 1], *pifsr;
- int reg;
if (fi->next)
fi->pc = FRAME_SAVED_PC (fi->next);
return 0;
}
+/* Change the register names based on the current machine type. */
+
+static int
+v850_target_architecture_hook (ap)
+ const bfd_arch_info_type *ap;
+{
+ int i, j;
+
+ if (ap->arch != bfd_arch_v850)
+ return 0;
+
+ for (i = 0; v850_processor_type_table[i].regnames != NULL; i++)
+ {
+ if (v850_processor_type_table[i].mach == ap->mach)
+ {
+ v850_register_names = v850_processor_type_table[i].regnames;
+ return 1;
+ }
+ }
+
+ fatal ("Architecture `%s' unreconized", ap->printable_name);
+}
+
void
_initialize_v850_tdep ()
{
tm_print_insn = print_insn_v850;
+ target_architecture_hook = v850_target_architecture_hook;
}
projects / binutils-gdb.git / commitdiff