static CORE_ADDR v850_scan_prologue PARAMS ((CORE_ADDR pc,
struct prologue_info *fs));
+
+
+/* Should call_function allocate stack space for a struct return? */
+int
+v850_use_struct_convention (gcc_p, type)
+ int gcc_p;
+ struct type *type;
+{
+ return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 4);
+}
+
\f
/* Function: scan_prologue
Scan the prologue of the function that contains PC, and record what
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
search to something reasonable. */
regsave_func_p = 0;
save_pc = 0;
save_end = 0;
+ r12_tmp = 0;
#ifdef DEBUG
printf_filtered ("Current_pc = 0x%.8lx, prologue_end = 0x%.8lx\n",
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);
- else if (insn == ((FP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
+ else if (insn == ((FP_RAW_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */
{
fp_used = 1;
- pi->framereg = FP_REGNUM;
+ pi->framereg = FP_RAW_REGNUM;
}
+ else if (insn == ((R12_REGNUM << 11) | 0x0640 | R0_REGNUM)) /* movhi hi(const),r0,r12 */
+ r12_tmp = read_memory_integer (current_pc + 2, 2) << 16;
+ else if (insn == ((R12_REGNUM << 11) | 0x0620 | R12_REGNUM)) /* movea lo(const),r12,r12 */
+ r12_tmp += read_memory_integer (current_pc + 2, 2);
+ 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 */
ep_used = 1;
else if (insn == ((EP_REGNUM << 11) | 0x0000 | 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 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|| (fp_used
- && (insn & 0x07ff) == (0x0760 | FP_REGNUM))) /* st.w <reg>,<offset>[fp] */
+ && (insn & 0x07ff) == (0x0760 | 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)
/* 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_REGNUM);
+ fp = v850_find_callers_reg (fi, 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_REGNUM)
+ if (pi.framereg == FP_RAW_REGNUM)
return v850_find_callers_reg (fi, pi.framereg);
return fi->frame - pi.frameoffset;