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authorDaniel Jacobowitz <drow@false.org>2007-03-02 12:15:01 +0000
committerDaniel Jacobowitz <drow@false.org>2007-03-02 12:15:01 +0000
commit6a1754a359b12faa37a7c766474962d0c9b30abc (patch)
treea14836aedbbd4bbf8d0efd5aa612839e49fe31c1 /sim/sh/gencode.c
parentcde1b43932c019e29e0c2690f0d58d82287c0113 (diff)
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2007-03-02 Andrew Stubbs <andrew.stubbs@st.com>
* gencode.c (tab): Correct pre-decrement instructions when m == n.
Diffstat (limited to 'sim/sh/gencode.c')
-rw-r--r--sim/sh/gencode.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/sim/sh/gencode.c b/sim/sh/gencode.c
index e86bd29..15313b0 100644
--- a/sim/sh/gencode.c
+++ b/sim/sh/gencode.c
@@ -970,9 +970,11 @@ op tab[] =
"WBAT (R[n] + R0, R[m]);",
},
{ "n", "nm", "mov.b <REG_M>,@-<REG_N>", "0010nnnnmmmm0100",
+ /* Allow for the case where m == n. */
+ "int t = R[m];",
"MA (1);",
"R[n] -= 1;",
- "WBAT (R[n], R[m]);",
+ "WBAT (R[n], t);",
},
{ "n", "n0", "mov.b R0,@<REG_N>+", "0100nnnn10001011",
"MA (1);",
@@ -1035,9 +1037,11 @@ op tab[] =
"WLAT (R0 + R[n], R[m]);",
},
{ "n", "nm", "mov.l <REG_M>,@-<REG_N>", "0010nnnnmmmm0110",
+ /* Allow for the case where m == n. */
+ "int t = R[m];",
"MA (1) ;",
"R[n] -= 4;",
- "WLAT (R[n], R[m]);",
+ "WLAT (R[n], t);",
},
{ "n", "n0", "mov.l R0,@<REG_N>+", "0100nnnn10101011",
"MA (1) ;",
@@ -1099,9 +1103,11 @@ op tab[] =
"WWAT (R0 + R[n], R[m]);",
},
{ "n", "mn", "mov.w <REG_M>,@-<REG_N>", "0010nnnnmmmm0101",
+ /* Allow for the case where m == n. */
+ "int t = R[m];",
"MA (1);",
"R[n] -= 2;",
- "WWAT (R[n], R[m]);",
+ "WWAT (R[n], t);",
},
{ "n", "0n", "mov.w R0,@<REG_N>+", "0100nnnn10011011",
"MA (1);",