JehanneOS/newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

include/opcode/

Browse Source 
* 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
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> 2013-08-01 Richard Sandiford <rdsandiford@googlemail.com>
* mips.h (mips_decode_reg_operand): New function. * 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. */ but the rules for MIPS16 instructions like ADDIUPC are more complicated. */
struct mips_pcrel_operand 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; 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 /* 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 reinstated. This is true for jumps and branches and false for
PC-relative data instructions. */ PC-relative data instructions. */
@@ -604,6 +601,25 @@ mips_decode_int_operand (const struct mips_int_operand *operand,
return uval; 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. */ /* Return the register that OPERAND encodes as UVAL. */
static inline int static inline int
@@ -625,10 +641,7 @@ mips_decode_pcrel_operand (const struct mips_pcrel_operand *operand,
bfd_vma addr; bfd_vma addr;
addr = base_pc & -(1 << operand->align_log2); addr = base_pc & -(1 << operand->align_log2);
if (operand->is_signed) addr += mips_decode_int_operand (&operand->root, uval);
addr += mips_signed_operand (&operand->root, uval) * (1 << operand->shift);
else
addr += uval << operand->shift;
if (operand->include_isa_bit) if (operand->include_isa_bit)
addr |= base_pc & 1; addr |= base_pc & 1;
if (operand->flip_isa_bit) if (operand->flip_isa_bit)