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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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adfd3e03b1
The Iop_CmpORD class of iops support the POWER specific comparison instructions. The instructions take two 32-bit or 64-bit operands and produce a result of the same size. However, only the lower bits of the result are set by the instruction. The bits are set by the instruction to indicate if the comparison is "less then", "greater then", or "equal". This patch adds support to the V-bit tester to verify the propagation of the undefined bits in the inputs to the output for the Iop_CmpORd iops. The output bits are always set to undefined if any of the input bits are not defined. This patch is for bugzilla 310169 git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13123
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* -*- mode: C; c-basic-offset: 3; -*- */
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#ifndef VBITS_H
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#define VBITS_H
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#include <stdint.h>
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#include <stdio.h>
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typedef uint64_t uint128_t[2];
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typedef uint64_t uint256_t[4];
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/* A type to represent V-bits */
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typedef struct {
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unsigned num_bits;
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union {
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uint8_t u8;
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uint16_t u16;
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uint32_t u32;
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uint64_t u64;
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uint128_t u128;
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uint256_t u256;
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} bits;
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} vbits_t;
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/* A type large enough to hold any IRtype'd value. At this point
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we do not expect to test with specific floating point values.
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So we don't need to represent them. */
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typedef union {
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uint8_t u8;
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uint16_t u16;
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uint32_t u32;
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uint64_t u64;
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uint128_t u128;
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uint256_t u256;
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} value_t;
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void print_vbits(FILE *, vbits_t);
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vbits_t undefined_vbits(unsigned num_bits);
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vbits_t defined_vbits(unsigned num_bits);
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int equal_vbits(vbits_t, vbits_t);
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vbits_t truncate_vbits(vbits_t, unsigned num_bits);
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vbits_t left_vbits(vbits_t, unsigned num_bits);
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vbits_t or_vbits(vbits_t, vbits_t);
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vbits_t and_vbits(vbits_t, vbits_t);
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vbits_t concat_vbits(vbits_t, vbits_t);
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vbits_t upper_vbits(vbits_t);
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vbits_t sextend_vbits(vbits_t, unsigned num_bits);
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vbits_t zextend_vbits(vbits_t, unsigned num_bits);
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vbits_t onehot_vbits(unsigned bitno, unsigned num_bits);
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vbits_t shl_vbits(vbits_t, unsigned amount);
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vbits_t shr_vbits(vbits_t, unsigned amount);
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vbits_t sar_vbits(vbits_t, unsigned amount);
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int completely_defined_vbits(vbits_t);
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vbits_t cmpord_vbits(unsigned v1_num_bits, unsigned v2_num_bits);
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#endif // VBITS_H
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