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* mn10300-opc.c: Add some comments explaining the various 

operands and such.

        * mn10300-dis.c (disassemble): Fix minor gcc -Wall warnings.
This commit is contained in:
Jeff Law 1996-12-06 22:04:12 +00:00
parent b2f7a7e5b3
commit 8329699005
3 changed files with 51 additions and 3 deletions
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7
opcodes/ChangeLog
View File

@ -1,3 +1,10 @@
Fri Dec 6 14:48:09 1996 Jeffrey A Law (law@cygnus.com)
* mn10300-opc.c: Add some comments explaining the various
operands and such.
* mn10300-dis.c (disassemble): Fix minor gcc -Wall warnings.
Thu Dec 5 12:09:48 1996 J.T. Conklin <jtc@rtl.cygnus.com>
* m68k-dis.c (print_insn_arg): Handle new < and > operand

4
opcodes/mn10300-dis.c
View File

@ -283,7 +283,7 @@ disassemble (memaddr, info, insn, extension, size)
&& size == mysize)
{
const unsigned char *opindex_ptr;
unsigned int nocomma, memop;
unsigned int nocomma;
int paren = 0;
match = 1;
@ -304,7 +304,7 @@ disassemble (memaddr, info, insn, extension, size)
value = insn & ((1 << operand->bits) - 1);
value <<= (32 - operand->bits);
temp = extension >> operand->shift;
temp &= ((1 << 32 - operand->bits) - 1);
temp &= ((1 << (32 - operand->bits)) - 1);
value |= temp;
}
else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)

43
opcodes/mn10300-opc.c
View File

@ -23,51 +23,71 @@ const struct mn10300_operand mn10300_operands[] = {
#define UNUSED 0
{0, 0, 0},
/* dn register in the first register operand position. */
#define DN0 (UNUSED+1)
{2, 0, MN10300_OPERAND_DREG},
/* dn register in the second register operand position. */
#define DN1 (DN0+1)
{2, 2, MN10300_OPERAND_DREG},
/* dn register in the third register operand position. */
#define DN2 (DN1+1)
{2, 4, MN10300_OPERAND_DREG},
/* dm register in the first register operand position. */
#define DM0 (DN2+1)
{2, 0, MN10300_OPERAND_DREG},
/* dm register in the second register operand position. */
#define DM1 (DM0+1)
{2, 2, MN10300_OPERAND_DREG},
/* dm register in the third register operand position. */
#define DM2 (DM1+1)
{2, 4, MN10300_OPERAND_DREG},
/* an register in the first register operand position. */
#define AN0 (DM2+1)
{2, 0, MN10300_OPERAND_AREG},
/* an register in the second register operand position. */
#define AN1 (AN0+1)
{2, 2, MN10300_OPERAND_AREG},
/* an register in the third register operand position. */
#define AN2 (AN1+1)
{2, 4, MN10300_OPERAND_AREG},
/* am register in the first register operand position. */
#define AM0 (AN2+1)
{2, 0, MN10300_OPERAND_AREG},
/* am register in the second register operand position. */
#define AM1 (AM0+1)
{2, 2, MN10300_OPERAND_AREG},
/* am register in the third register operand position. */
#define AM2 (AM1+1)
{2, 4, MN10300_OPERAND_AREG},
/* 8 bit unsigned immediate which may promote to a 16bit
unsigned immediate. */
#define IMM8 (AM2+1)
{8, 0, MN10300_OPERAND_PROMOTE},
/* 16 bit unsigned immediate which may promote to a 32bit
unsigned immediate. */
#define IMM16 (IMM8+1)
{16, 0, MN10300_OPERAND_PROMOTE},
/* 16 bit pc-relative immediate which may promote to a 16bit
pc-relative immediate. */
#define IMM16_PCREL (IMM16+1)
{16, 0, MN10300_OPERAND_PROMOTE | MN10300_OPERAND_PCREL},
/* 16bit unsigned dispacement in a memory operation which
may promote to a 32bit displacement. */
#define IMM16_MEM (IMM16_PCREL+1)
{16, 0, MN10300_OPERAND_PROMOTE | MN10300_OPERAND_MEMADDR},
@ -79,9 +99,11 @@ const struct mn10300_operand mn10300_operands[] = {
#define IMM32 (IMM16_MEM+1)
{16, 0, MN10300_OPERAND_SPLIT},
/* 32bit pc-relative offset. */
#define IMM32_PCREL (IMM32+1)
{16, 0, MN10300_OPERAND_SPLIT | MN10300_OPERAND_PCREL},
/* 32bit memory offset. */
#define IMM32_MEM (IMM32_PCREL+1)
{16, 0, MN10300_OPERAND_SPLIT | MN10300_OPERAND_MEMADDR},
@ -111,63 +133,82 @@ const struct mn10300_operand mn10300_operands[] = {
#define IMM32_HIGH24_LOWSHIFT16 (IMM32_HIGH24+1)
{24, 16, MN10300_OPERAND_SPLIT | MN10300_OPERAND_PCREL},
/* Stack pointer. */
#define SP (IMM32_HIGH24_LOWSHIFT16+1)
{8, 0, MN10300_OPERAND_SP},
/* Processor status word. */
#define PSW (SP+1)
{0, 0, MN10300_OPERAND_PSW},
/* MDR register. */
#define MDR (PSW+1)
{0, 0, MN10300_OPERAND_MDR},
/* Index register. */
#define DI (MDR+1)
{2, 2, MN10300_OPERAND_DREG},
/* 8 bit signed displacement, may promote to 16bit signed dispacement. */
#define SD8 (DI+1)
{8, 0, MN10300_OPERAND_SIGNED | MN10300_OPERAND_PROMOTE},
/* 16 bit signed displacement, may promote to 32bit dispacement. */
#define SD16 (SD8+1)
{16, 0, MN10300_OPERAND_SIGNED | MN10300_OPERAND_PROMOTE},
/* 8 bit signed displacement that can not promote. */
#define SD8N (SD16+1)
{8, 0, MN10300_OPERAND_SIGNED},
/* 8 bit pc-relative displacement. */
#define SD8N_PCREL (SD8N+1)
{8, 0, MN10300_OPERAND_SIGNED | MN10300_OPERAND_PCREL},
/* 8 bit signed displacement shifted left 8 bits in the instruction. */
#define SD8N_SHIFT8 (SD8N_PCREL+1)
{8, 8, MN10300_OPERAND_SIGNED},
/* 8 bit signed immediate which may promote to 16bit signed immediate. */
#define SIMM8 (SD8N_SHIFT8+1)
{8, 0, MN10300_OPERAND_SIGNED | MN10300_OPERAND_PROMOTE},
/* 16 bit signed immediate which may promote to 32bit immediate. */
#define SIMM16 (SIMM8+1)
{16, 0, MN10300_OPERAND_SIGNED | MN10300_OPERAND_PROMOTE},
/* Either an open paren or close paren. */
#define PAREN (SIMM16+1)
{0, 0, MN10300_OPERAND_PAREN},
/* dn register that appears in the first and second register positions. */
#define DN01 (PAREN+1)
{2, 0, MN10300_OPERAND_DREG | MN10300_OPERAND_REPEATED},
/* an register that appears in the first and second register positions. */
#define AN01 (DN01+1)
{2, 0, MN10300_OPERAND_AREG | MN10300_OPERAND_REPEATED},
/* 16bit pc-relative displacement which may promote to 32bit pc-relative
displacement. */
#define D16_SHIFT (AN01+1)
{16, 8, MN10300_OPERAND_PROMOTE | MN10300_OPERAND_PCREL},
/* 8 bit immediate found in the extension word. */
#define IMM8E (D16_SHIFT+1)
{8, 0, MN10300_OPERAND_EXTENDED},
/* Register list found in the extension word shifted 8 bits left. */
#define REGSE_SHIFT8 (IMM8E+1)
{8, 8, MN10300_OPERAND_EXTENDED | MN10300_OPERAND_REG_LIST},
/* Register list shifted 8 bits left. */
#define REGS_SHIFT8 (REGSE_SHIFT8 + 1)
{8, 8, MN10300_OPERAND_REG_LIST},
/* Reigster list. */
#define REGS (REGS_SHIFT8+1)
{8, 0, MN10300_OPERAND_REG_LIST},
} ;
#define MEM(ADDR) PAREN, ADDR, PAREN