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-rw-r--r--arch/arm/lib/copy_template.S24
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/arm/lib/copy_template.S b/arch/arm/lib/copy_template.S
index 139cce646055..805e3f8fb007 100644
--- a/arch/arm/lib/copy_template.S
+++ b/arch/arm/lib/copy_template.S
@@ -57,6 +57,13 @@
57 * 57 *
58 * Restore registers with the values previously saved with the 58 * Restore registers with the values previously saved with the
59 * 'preserv' macro. Called upon code termination. 59 * 'preserv' macro. Called upon code termination.
60 *
61 * LDR1W_SHIFT
62 * STR1W_SHIFT
63 *
64 * Correction to be applied to the "ip" register when branching into
65 * the ldr1w or str1w instructions (some of these macros may expand to
66 * than one 32bit instruction in Thumb-2)
60 */ 67 */
61 68
62 69
@@ -99,9 +106,15 @@
99 106
1005: ands ip, r2, #28 1075: ands ip, r2, #28
101 rsb ip, ip, #32 108 rsb ip, ip, #32
109#if LDR1W_SHIFT > 0
110 lsl ip, ip, #LDR1W_SHIFT
111#endif
102 addne pc, pc, ip @ C is always clear here 112 addne pc, pc, ip @ C is always clear here
103 b 7f 113 b 7f
1046: nop 1146:
115 .rept (1 << LDR1W_SHIFT)
116 W(nop)
117 .endr
105 ldr1w r1, r3, abort=20f 118 ldr1w r1, r3, abort=20f
106 ldr1w r1, r4, abort=20f 119 ldr1w r1, r4, abort=20f
107 ldr1w r1, r5, abort=20f 120 ldr1w r1, r5, abort=20f
@@ -110,9 +123,16 @@
110 ldr1w r1, r8, abort=20f 123 ldr1w r1, r8, abort=20f
111 ldr1w r1, lr, abort=20f 124 ldr1w r1, lr, abort=20f
112 125
126#if LDR1W_SHIFT < STR1W_SHIFT
127 lsl ip, ip, #STR1W_SHIFT - LDR1W_SHIFT
128#elif LDR1W_SHIFT > STR1W_SHIFT
129 lsr ip, ip, #LDR1W_SHIFT - STR1W_SHIFT
130#endif
113 add pc, pc, ip 131 add pc, pc, ip
114 nop 132 nop
115 nop 133 .rept (1 << STR1W_SHIFT)
134 W(nop)
135 .endr
116 str1w r0, r3, abort=20f 136 str1w r0, r3, abort=20f
117 str1w r0, r4, abort=20f 137 str1w r0, r4, abort=20f
118 str1w r0, r5, abort=20f 138 str1w r0, r5, abort=20f