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* gencode.c (process_instructions): Call build_endian_shift when

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expanding STORE RIGHT, to fix swr.
	* support.h (SIGNEXTEND): If the sign bit is not set, explicitly
	clear the high bits.
	* interp.c (Convert): Fix fmt_single to fmt_long to not truncate.
	Fix float to int conversions to produce signed values.
This commit is contained in:
Ian Lance Taylor
1996-09-20 19:49:49 +00:00
parent e12ab364d2
commit 149ee67274
2 changed files with 5 additions and 1 deletions
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1
sim/mips/gencode.c
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@ -1530,6 +1530,7 @@ process_instructions(doarch,features)
printf(" GPR[destreg] = SIGNEXTEND(GPR[destreg],32);\n");
} else { /* store */
printf(" memval = (op2 << (byte * 8));\n");
build_endian_shift(proc64,datalen,2,s_left,32);
printf(" StoreMemory(uncached,(%s - byte),memval,paddr,vaddr,isREAL);\n",accesslength);
}
}

5
sim/mips/support.h
View File

@ -48,7 +48,10 @@ typedef unsigned long long uword64;
/* Sign-extend the given value (e) as a value (b) bits long. We cannot
assume the HI32bits of the operand are zero, so we must perform a
mask to ensure we can use the simple subtraction to sign-extend. */
#define SIGNEXTEND(e,b) (((e) & ((uword64)1 << ((b) - 1))) ? (((e) & (((uword64)1 << (b)) - 1)) - ((uword64)1 << (b))) : (e))
#define SIGNEXTEND(e,b) \
(((e) & ((uword64) 1 << ((b) - 1))) \
? (((e) & (((uword64) 1 << (b)) - 1)) - ((uword64)1 << (b))) \
: ((e) & (((((uword64) 1 << ((b) - 1)) - 1) << 1) | 1)))
/* Check if a value will fit within a word (unsigned int): */
#define NOTWORDVALUE(v) ((((((uword64)(v)>>32) == 0) && !((v) & ((unsigned)1 << 31))) || ((((uword64)(v)>>32) == 0xFFFFFFFF) && ((v) & ((unsigned)1 << 31)))) ? (1 == 0) : (1 == 1))