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binutils-gdb
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Recognize -mep mode when used to store the stack frame

This commit is contained in:
Michael Meissner 1996-12-20 00:44:15 +00:00
parent f8dfe411d2
commit b71f8719a0
2 changed files with 32 additions and 11 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
start-sanitize-v850
Thu Dec 19 19:42:44 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* v850-tdep.c (v850_scan_prologue): Deal with -mep shorting
register saves by using the ep register.
end-sanitize-v850
start-sanitize-m32r
Thu Dec 19 15:57:16 1996 Doug Evans <dje@canuck.cygnus.com>

36
gdb/v850-tdep.c
View File

@ -65,6 +65,7 @@ v850_scan_prologue (pc, pi)
CORE_ADDR func_addr, prologue_end, current_pc;
struct pifsr *pifsr;
int fp_used;
int ep_used;
/* First, figure out the bounds of the prologue so that we can limit the
search to something reasonable. */
@ -104,6 +105,7 @@ v850_scan_prologue (pc, pi)
pi->frameoffset = 0;
pi->framereg = SP_REGNUM;
fp_used = 0;
ep_used = 0;
pifsr = pi->pifsrs;
for (current_pc = func_addr; current_pc < prologue_end; current_pc += 2)
@ -125,18 +127,30 @@ v850_scan_prologue (pc, pi)
fp_used = 1;
pi->framereg = FP_REGNUM;
}
else if ((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|| (fp_used
&& (insn & 0x07ff) == (0x0760 | FP_REGNUM))) /* st.w <reg>,<offset>[fp] */
if (pifsr)
{
pifsr->framereg = insn & 0x1f;
pifsr->reg = (insn >> 11) & 0x1f; /* Extract <reg> */
else if (insn == 0xf003) /* mov sp,ep */
ep_used = 1;
else if (insn == 0xf001) /* mov r1,ep */
ep_used = 0;
else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */
|| (fp_used
&& (insn & 0x07ff) == (0x0760 | FP_REGNUM))) /* st.w <reg>,<offset>[fp] */
&& pifsr)
{
pifsr->framereg = insn & 0x1f;
pifsr->reg = (insn >> 11) & 0x1f; /* Extract <reg> */
pifsr->offset = read_memory_integer (current_pc + 2, 2) & ~1;
pifsr++;
}
pifsr->offset = read_memory_integer (current_pc + 2, 2) & ~1;
pifsr++;
}
else if (ep_used /* sst.w <reg>,<offset>[ep] */
&& ((insn & 0x0781) == 0x0501)
&& pifsr)
{
pifsr->framereg = 3;
pifsr->reg = (insn >> 11) & 0x1f; /* Extract <reg> */
pifsr->offset = (insn & 0x007e) << 2;
pifsr++;
}
if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */
current_pc += 2;