Kinsey Moore created an issue:
https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5416
## Summary
The ZynqMP ARM R5 BSP sample test hello.exe crashes on start.
```
*** FATAL ***
fatal source: 9 (RTEMS_FATAL_SOURCE_EXCEPTION)
R0 = 0x4500fab0 R8 = 0x00000068
R1 = 0x45012550 R9 = 0x00000002
R2 = 0x45012558 R10 = 0x00000008
R3 = 0x00000068 R11 = 0x00000008
R4 = 0x45012550 R12 = 0x00000000
R5 = 0x3ffedaa9 SP = 0x00020ac8
R6 = 0x3ffedaa8 LR = 0x84fffff8
R7 = 0x45012558 PC = 0x45005b3e
CPSR = 0x200101f3 VEC = 0x00000004
FPEXC = 0x40000000
FPSCR = 0x00000000
D00 = 0x0033000040000000
D01 = 0x0400880002c8a042
D02 = 0x0102180410001088
D03 = 0xdc04000000000000
D04 = 0x0000000000040180
D05 = 0x6044000201008090
D06 = 0x0000000000000000
D07 = 0x00000000000001fe
D08 = 0x0200508004840004
D09 = 0x9240000008104085
D10 = 0x0000000802006820
D11 = 0x0001040844002444
D12 = 0x00000102180c5200
D13 = 0x0000004000000024
D14 = 0x0050000008090320
D15 = 0x0008000400480002
RTEMS version: 7.0.0.a640977c9f1e557610bf774335dcccea0e3b952f
RTEMS tools: 15.2.0 20250808 (RTEMS 7, RSB
efde4afe1df5d6739f8c1efcd1473d15e2869e5f, Newlib 038afec1)
executing thread ID: 0x09010001
executing thread name: IDLE
```
The code segment in question is:
```ASM
45005b1c <_Heap_Block_allocate>:
45005b1c: e92d 41f0 stmdb sp!, {r4, r5, r6, r7, r8, lr}
45005b20: 684d ldr r5, [r1, #4]
45005b22: 4698 mov r8, r3
45005b24: f1a2 0408 sub.w r4, r2, #8
45005b28: f025 0601 bic.w r6, r5, #1
45005b2c: eb06 0e01 add.w lr, r6, r1
45005b30: b084 sub sp, #16
45005b32: eba4 0c01 sub.w ip, r4, r1
45005b36: f8de 3004 ldr.w r3, [lr, #4]
45005b3a: 07df lsls r7, r3, #31
45005b3c: bf48 it mi
45005b3e: 4603 movmi r3, r0
```
## Steps to reproduce
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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5416
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