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Improve MIPS32 support

This commit is contained in:
Nick Clifton 2000-12-01 20:05:32 +00:00
parent b273323fcd
commit 2a91907cc0
2 changed files with 35 additions and 20 deletions
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10
include/opcode/ChangeLog
View File

@ -1,3 +1,13 @@
2000-12-01 Chris Demetriou <cgd@sibyte.com>
mips.h (OP_MASK_SYSCALL, OP_SH_SYSCALL): Delete.
(OP_MASK_CODE20, OP_SH_CODE20): Define, with values of old
OP_*_SYSCALL definitions.
(OP_SH_CODE19, OP_MASK_CODE19): Define, for use as
19 bit wait codes.
(MIPS operand specifier comments): Remove 'm', add 'U' and
'J', and update the meaning of 'B' so that it's more general.
2000-10-20 Jakub Jelinek <jakub@redhat.com>
* sparc.h (enum sparc_opcode_arch_val): Add SPARC_OPCODE_ARCH_V9B.

45
include/opcode/mips.h
View File

@ -48,9 +48,11 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
breakpoint instruction are not defined; Kane says the breakpoint
code field in BREAK is 20 bits; yet MIPS assemblers and debuggers
only use ten bits). An optional two-operand form of break/sdbbp
allows the lower ten bits to be set too.
allows the lower ten bits to be set too, and MIPS32 and later
architectures allow 20 bits to be set with a signal operand
(using CODE20).
The syscall instruction uses SYSCALL.
The syscall instruction uses CODE20.
The general coprocessor instructions use COPZ. */
@ -82,8 +84,8 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
#define OP_SH_PREFX 11
#define OP_MASK_CCC 0x7
#define OP_SH_CCC 8
#define OP_MASK_SYSCALL 0xfffff
#define OP_SH_SYSCALL 6
#define OP_MASK_CODE20 0xfffff /* 20 bit syscall/breakpoint code. */
#define OP_SH_CODE20 6
#define OP_MASK_SHAMT 0x1f
#define OP_SH_SHAMT 6
#define OP_MASK_FD 0x1f
@ -100,17 +102,17 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
#define OP_SH_FUNCT 0
#define OP_MASK_SPEC 0x3f
#define OP_SH_SPEC 0
#define OP_SH_LOCC 8 /* FP condition code */
#define OP_SH_HICC 18 /* FP condition code */
#define OP_SH_LOCC 8 /* FP condition code. */
#define OP_SH_HICC 18 /* FP condition code. */
#define OP_MASK_CC 0x7
#define OP_SH_COP1NORM 25 /* Normal COP1 encoding */
#define OP_MASK_COP1NORM 0x1 /* a single bit */
#define OP_SH_COP1SPEC 21 /* COP1 encodings */
#define OP_SH_COP1NORM 25 /* Normal COP1 encoding. */
#define OP_MASK_COP1NORM 0x1 /* a single bit. */
#define OP_SH_COP1SPEC 21 /* COP1 encodings. */
#define OP_MASK_COP1SPEC 0xf
#define OP_MASK_COP1SCLR 0x4
#define OP_MASK_COP1CMP 0x3
#define OP_SH_COP1CMP 4
#define OP_SH_FORMAT 21 /* FP short format field */
#define OP_SH_FORMAT 21 /* FP short format field. */
#define OP_MASK_FORMAT 0x7
#define OP_SH_TRUE 16
#define OP_MASK_TRUE 0x1
@ -120,16 +122,17 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
#define OP_MASK_UNSIGNED 0x1
#define OP_SH_HINT 16
#define OP_MASK_HINT 0x1f
#define OP_SH_MMI 0 /* Multimedia (parallel) op */
#define OP_SH_MMI 0 /* Multimedia (parallel) op. */
#define OP_MASK_MMI 0x3f
#define OP_SH_MMISUB 6
#define OP_MASK_MMISUB 0x1f
#define OP_MASK_PERFREG 0x1f /* Performance monitoring */
#define OP_MASK_PERFREG 0x1f /* Performance monitoring. */
#define OP_SH_PERFREG 1
#define OP_SH_SEL 0 /* Coprocessor select field */
#define OP_MASK_SEL 0x7 /* The sel field of mfcZ and mtcZ. */
#define OP_SH_CODE20 6 /* 20 bit breakpoint code */
#define OP_MASK_CODE20 0xfffff
#define OP_SH_SEL 0 /* Coprocessor select field. */
#define OP_MASK_SEL 0x7 /* The sel field of mfcZ and mtcZ. */
#define OP_SH_CODE19 6 /* 19 bit wait code. */
#define OP_MASK_CODE19 0x7ffff
/* This structure holds information for a particular instruction. */
@ -176,7 +179,6 @@ struct mips_opcode
"i" 16 bit unsigned immediate (OP_*_IMMEDIATE)
"j" 16 bit signed immediate (OP_*_DELTA)
"k" 5 bit cache opcode in target register position (OP_*_CACHE)
"m" 20 bit breakpoint code (OP_*_CODE20)
"o" 16 bit signed offset (OP_*_DELTA)
"p" 16 bit PC relative branch target address (OP_*_DELTA)
"q" 10 bit extra breakpoint code (OP_*_CODE2)
@ -186,8 +188,11 @@ struct mips_opcode
"u" 16 bit upper 16 bits of address (OP_*_IMMEDIATE)
"v" 5 bit same register used as both source and destination (OP_*_RS)
"w" 5 bit same register used as both target and destination (OP_*_RT)
"U" 5 bit same destination register in both OP_*_RD and OP_*_RT
(used by clo and clz)
"C" 25 bit coprocessor function code (OP_*_COPZ)
"B" 20 bit syscall function code (OP_*_SYSCALL)
"B" 20 bit syscall/breakpoint function code (OP_*_CODE20)
"J" 19 bit wait function code (OP_*_CODE19)
"x" accept and ignore register name
"z" must be zero register
@ -221,8 +226,8 @@ struct mips_opcode
Characters used so far, for quick reference when adding more:
"<>(),"
"ABCDEFGHILMNPSTRVW"
"abcdfhijklmopqrstuvwxz"
"ABCDEFGHIJLMNPRSTUVW"
"abcdfhijklopqrstuvwxz"
*/
/* These are the bits which may be set in the pinfo field of an