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* config/tc-mn10300.c (md_assemble): Update to handle endianness 

issues correctly.
This commit is contained in:
Jeff Law 1996-12-11 06:19:43 +00:00
parent 95d18eb74d
commit 8ca7163145
1 changed files with 83 additions and 7 deletions
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90
gas/config/tc-mn10300.c
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@ -778,12 +778,88 @@ keep_going:
if (opcode->format == FMT_D4)
size = 6;
/* Write out the instruction. */
/* Allocate space for the instruction. */
f = frag_more (size);
number_to_chars_bigendian (f, insn, size > 4 ? 4 : size);
if (size > 4)
number_to_chars_bigendian (f + 4, extension, size - 4);
/* Fill in bytes for the instruction. Note that opcode fields
are written big-endian, 16 & 32bit immediates are written
little endian. Egad. */
if (opcode->format == FMT_S0
|| opcode->format == FMT_S1
|| opcode->format == FMT_D0
|| opcode->format == FMT_D1)
{
number_to_chars_bigendian (f, insn, size);
}
else if (opcode->format == FMT_S2
&& opcode->opcode != 0xdf0000
&& opcode->opcode != 0xde0000)
{
/* A format S2 instruction that is _not_ "ret" and "retf". */
number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1);
number_to_chars_littleendian (f + 1, insn & 0xffff, 2);
}
else if (opcode->format == FMT_S2)
{
/* This must be a ret or retf, which is written entirely in big-endian
format. */
number_to_chars_bigendian (f, insn, 3);
}
else if (opcode->format == FMT_S4
&& opcode->opcode != 0xdc000000)
{
/* This must be a format S4 "call" instruction. What a pain. */
unsigned long temp = (insn >> 8) & 0xffff;
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
number_to_chars_littleendian (f + 1, temp, 2);
number_to_chars_bigendian (f + 3, insn & 0xff, 1);
number_to_chars_bigendian (f + 4, extension & 0xff, 1);
}
else if (opcode->format == FMT_S4)
{
/* This must be a format S4 "jmp" instruction. */
unsigned long temp = ((insn & 0xffffff) << 8) | (extension & 0xff);
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
number_to_chars_littleendian (f + 1, temp, 4);
}
else if (opcode->format == FMT_S6)
{
unsigned long temp = ((insn & 0xffffff) << 8)
| ((extension >> 16) & 0xff);
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
number_to_chars_littleendian (f + 1, temp, 4);
number_to_chars_bigendian (f + 5, (extension >> 8) & 0xff, 1);
number_to_chars_bigendian (f + 6, extension & 0xff, 1);
}
else if (opcode->format == FMT_D2
&& opcode->opcode != 0xfaf80000
&& opcode->opcode != 0xfaf00000
&& opcode->opcode != 0xfaf40000)
{
/* A format D2 instruction where the 16bit immediate is
really a single 16bit value, not two 8bit values. */
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
number_to_chars_littleendian (f + 2, insn & 0xffff, 2);
}
else if (opcode->format == FMT_D2)
{
/* A format D2 instruction where the 16bit immediate
is really two 8bit immediates. */
number_to_chars_bigendian (f, insn, 4);
}
else if (opcode->format == FMT_D4)
{
unsigned long temp = ((insn & 0xffff) << 16) | (extension & 0xffff);
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
number_to_chars_littleendian (f + 2, temp, 4);
}
else if (opcode->format == FMT_D5)
{
unsigned long temp = ((insn & 0xffff) << 16) | ((extension >> 8) & 0xffff);
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
number_to_chars_littleendian (f + 2, temp, 4);
number_to_chars_bigendian (f + 6, extension & 0xff, 1);
}
/* Create any fixups. */
for (i = 0; i < fc; i++)
@ -867,9 +943,9 @@ keep_going:
else
{
if (reloc_size == 32)
reloc = BFD_RELOC_MN10300_32B;
reloc = BFD_RELOC_32
else if (reloc_size == 16)
reloc = BFD_RELOC_MN10300_16B;
reloc = BFD_RELOC_16
else if (reloc_size == 8)
reloc = BFD_RELOC_8;
else