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libdebugger: Work around assert when using _Thread_Executing.

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Using _Thread_Executing with RTEMS_DEBUG results in an `assert` if
the server accesses invalid memory.

Updates #2993.
This commit is contained in:
Chris Johns
2017-04-14 17:12:44 +10:00
parent 50b1269626
commit b53ad4615a
2 changed files with 8 additions and 2 deletions
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3
cpukit/libdebugger/rtems-debugger-arm.c
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@@ -717,7 +717,8 @@ target_exception(CPU_Exception_frame* frame)
"mov r3, #0\n" \
"str r3, [r2]\n" /* clear the FPU frame pointer */ \
EXCEPTION_ENTRY_FPU(frame_fpu_size) \
"msr cpsr, r1\n" /* restore the irq mask */ \
"bic r1, r1, %[psr_i]\n" /* clear irq mask, debug checks */ \
"msr cpsr, r1\n" /* restore the state with irq mask clear */ \
ASM_THUMB_MODE \
: ARM_SWITCH_REG_ASM, \
[o_frame] "=r" (_frame) \