PlaneteCasio
/
libc
1
0
Fork 0
Code Issues 6 Pull Requests Releases Wiki Activity

include/opcode/ 

* mips.h (mips_pcrel_operand): Inherit from mips_int_operand.
	(mips_int_operand_min, mips_int_operand_max): New functions.
	(mips_decode_pcrel_operand): Use mips_decode_int_operand.

opcodes/
	* mips-formats.h (PCREL): Reorder parameters and update the definition
	to match new mips_pcrel_operand layout.
	(JUMP, JALX, BRANCH): Update accordingly.
	* mips16-opc.c (decode_mips16_operand): Likewise.

gas/
	* config/tc-mips.c (match_int_operand): Use mips_int_operand_min
	and mips_int_operand_max.
	(mips16_immed_operand, mips16_immed_operands, MIPS16_NUM_IMMED):
	Delete.
	(mips16_immed_operand, mips16_immed_in_range_p): New functions.
	(mips16_immed, mips16_extended_frag): Use them.  Use mips_int_operand
	instead of mips16_immed_operand.
This commit is contained in:
Richard Sandiford 2013-08-03 10:49:47 +00:00
parent f34670b338
commit fbb49d5252
2 changed files with 30 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/opcode/ChangeLog
View File

@ -1,3 +1,9 @@
2013-08-03 Richard Sandiford <rdsandiford@googlemail.com>
* mips.h (mips_pcrel_operand): Inherit from mips_int_operand.
(mips_int_operand_min, mips_int_operand_max): New functions.
(mips_decode_pcrel_operand): Use mips_decode_int_operand.
2013-08-01 Richard Sandiford <rdsandiford@googlemail.com>
* mips.h (mips_decode_reg_operand): New function.

35
include/opcode/mips.h
View File

@ -537,16 +537,13 @@ struct mips_reg_pair_operand
but the rules for MIPS16 instructions like ADDIUPC are more complicated. */
struct mips_pcrel_operand
{
struct mips_operand root;
/* Encodes the offset. */
struct mips_int_operand root;
/* The low ALIGN_LOG2 bits of the base PC are cleared to give PC'. */
/* The low ALIGN_LOG2 bits of the base PC are cleared to give PC',
which is then added to the offset encoded by ROOT. */
unsigned int align_log2 : 8;
/* The operand is shifted left SHIFT places and added to PC'.
The operand is signed if IS_SIGNED. */
unsigned int shift : 8;
unsigned int is_signed : 1;
/* If INCLUDE_ISA_BIT, the ISA bit of the original base PC is then
reinstated. This is true for jumps and branches and false for
PC-relative data instructions. */
@ -604,6 +601,25 @@ mips_decode_int_operand (const struct mips_int_operand *operand,
return uval;
}
/* Return the maximum value that can be encoded by OPERAND. */
static inline int
mips_int_operand_max (const struct mips_int_operand *operand)
{
return (operand->max_val + operand->bias) << operand->shift;
}
/* Return the minimum value that can be encoded by OPERAND. */
static inline int
mips_int_operand_min (const struct mips_int_operand *operand)
{
unsigned int mask;
mask = (1 << operand->root.size) - 1;
return mips_int_operand_max (operand) - (mask << operand->shift);
}
/* Return the register that OPERAND encodes as UVAL. */
static inline int
@ -625,10 +641,7 @@ mips_decode_pcrel_operand (const struct mips_pcrel_operand *operand,
bfd_vma addr;
addr = base_pc & -(1 << operand->align_log2);
if (operand->is_signed)
addr += mips_signed_operand (&operand->root, uval) * (1 << operand->shift);
else
addr += uval << operand->shift;
addr += mips_decode_int_operand (&operand->root, uval);
if (operand->include_isa_bit)
addr |= base_pc & 1;
if (operand->flip_isa_bit)