From 798066abd8e5ec2a411979fd34bfe0cd494c1813 Mon Sep 17 00:00:00 2001 From: Andrew Burgess Date: Thu, 11 Apr 2019 23:17:31 +0100 Subject: sim: Use host not target byte order for merging and splitting values When using writes to memory through a struct to merge and extract multi-word value, it is the endianness of the host, not the target that affects which order the component words need to be written into the structure. Of the 5 functions adjusted here 4 of them are unused. The 5th, JOINSIDF will soon be used by the or1k target. For or1k, simulated on x86-64, this change fixes this function so that the correct bytes are now returned. sim/common/ChangeLog: * cgen-ops.h (SUBWORDXFSI): Compare HOST_BYTE_ORDER not CURRENT_TARGET_BYTE_ORDER. (SUBWORDTFSI): Likewise. (JOINSIDF): Likewise. (JOINSIXF): Likewise. (JOINSITF): Likewise. --- sim/common/ChangeLog | 9 +++++++++ sim/common/cgen-ops.h | 10 +++++----- 2 files changed, 14 insertions(+), 5 deletions(-) (limited to 'sim/common') diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index 21a2474..fce4702 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,3 +1,12 @@ +2019-04-13 Andrew Burgess + + * cgen-ops.h (SUBWORDXFSI): Compare HOST_BYTE_ORDER not + CURRENT_TARGET_BYTE_ORDER. + (SUBWORDTFSI): Likewise. + (JOINSIDF): Likewise. + (JOINSIXF): Likewise. + (JOINSITF): Likewise. + 2019-03-28 Andrew Burgess * sim-base.h: Add 'sim-assert.h' include. diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h index 8415520..6fecb86 100644 --- a/sim/common/cgen-ops.h +++ b/sim/common/cgen-ops.h @@ -404,7 +404,7 @@ SUBWORDXFSI (XF in, int word) /* Note: typedef struct { SI parts[3]; } XF; */ union { XF in; SI out[3]; } x; x.in = in; - if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + if (HOST_BYTE_ORDER == BFD_ENDIAN_BIG) return x.out[word]; else return x.out[2 - word]; @@ -416,7 +416,7 @@ SUBWORDTFSI (TF in, int word) /* Note: typedef struct { SI parts[4]; } TF; */ union { TF in; SI out[4]; } x; x.in = in; - if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + if (HOST_BYTE_ORDER == BFD_ENDIAN_BIG) return x.out[word]; else return x.out[3 - word]; @@ -432,7 +432,7 @@ SEMOPS_INLINE DF JOINSIDF (SI x0, SI x1) { union { SI in[2]; DF out; } x; - if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + if (HOST_BYTE_ORDER == BFD_ENDIAN_BIG) x.in[0] = x0, x.in[1] = x1; else x.in[1] = x0, x.in[0] = x1; @@ -443,7 +443,7 @@ SEMOPS_INLINE XF JOINSIXF (SI x0, SI x1, SI x2) { union { SI in[3]; XF out; } x; - if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + if (HOST_BYTE_ORDER == BFD_ENDIAN_BIG) x.in[0] = x0, x.in[1] = x1, x.in[2] = x2; else x.in[2] = x0, x.in[1] = x1, x.in[0] = x2; @@ -454,7 +454,7 @@ SEMOPS_INLINE TF JOINSITF (SI x0, SI x1, SI x2, SI x3) { union { SI in[4]; TF out; } x; - if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + if (HOST_BYTE_ORDER == BFD_ENDIAN_BIG) x.in[0] = x0, x.in[1] = x1, x.in[2] = x2, x.in[3] = x3; else x.in[3] = x0, x.in[2] = x1, x.in[1] = x2, x.in[0] = x3; -- cgit v1.1