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Merge pull request #774 from jeenu-arm/no-return-macro 

Define and use no_ret macro where no return is expected
This commit is contained in:
danh-arm 2016-12-12 14:29:01 +00:00 committed by GitHub
parent 919ad05ecb a806dad58c
commit 1b5fa6ef10
19 changed files with 122 additions and 78 deletions
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32
bl1/aarch64/bl1_exceptions.S
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@ -49,25 +49,25 @@ vector_base bl1_exceptions
vector_entry SynchronousExceptionSP0
mov x0, #SYNC_EXCEPTION_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionSP0
vector_entry IrqSP0
mov x0, #IRQ_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqSP0
vector_entry FiqSP0
mov x0, #FIQ_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqSP0
vector_entry SErrorSP0
mov x0, #SERROR_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorSP0
/* -----------------------------------------------------
@ -77,25 +77,25 @@ vector_entry SErrorSP0
vector_entry SynchronousExceptionSPx
mov x0, #SYNC_EXCEPTION_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionSPx
vector_entry IrqSPx
mov x0, #IRQ_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqSPx
vector_entry FiqSPx
mov x0, #FIQ_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqSPx
vector_entry SErrorSPx
mov x0, #SERROR_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorSPx
/* -----------------------------------------------------
@ -120,19 +120,19 @@ vector_entry SynchronousExceptionA64
vector_entry IrqA64
mov x0, #IRQ_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqA64
vector_entry FiqA64
mov x0, #FIQ_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqA64
vector_entry SErrorA64
mov x0, #SERROR_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorA64
/* -----------------------------------------------------
@ -142,25 +142,25 @@ vector_entry SErrorA64
vector_entry SynchronousExceptionA32
mov x0, #SYNC_EXCEPTION_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionA32
vector_entry IrqA32
mov x0, #IRQ_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqA32
vector_entry FiqA32
mov x0, #FIQ_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqA32
vector_entry SErrorA32
mov x0, #SERROR_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorA32
@ -231,7 +231,7 @@ endfunc smc_handler64
unexpected_sync_exception:
mov x0, #SYNC_EXCEPTION_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
/* -----------------------------------------------------
* Save Secure/Normal world context and jump to

2
bl2/aarch32/bl2_entrypoint.S
View File

@ -140,6 +140,6 @@ func bl2_entrypoint
* Should never reach this point.
* ---------------------------------------------
*/
bl plat_panic_handler
no_ret plat_panic_handler
endfunc bl2_entrypoint

2
bl2/aarch64/bl2_entrypoint.S
View File

@ -131,6 +131,6 @@ func bl2_entrypoint
* Should never reach this point.
* ---------------------------------------------
*/
bl plat_panic_handler
no_ret plat_panic_handler
endfunc bl2_entrypoint

2
bl2u/aarch64/bl2u_entrypoint.S
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@ -126,6 +126,6 @@ func bl2u_entrypoint
* Should never reach this point.
* ---------------------------------------------
*/
bl plat_panic_handler
no_ret plat_panic_handler
endfunc bl2u_entrypoint

6
bl31/aarch64/crash_reporting.S
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@ -350,17 +350,17 @@ func do_crash_reporting
plat_crash_print_regs
/* Done reporting */
bl plat_panic_handler
no_ret plat_panic_handler
endfunc do_crash_reporting
#else /* CRASH_REPORTING */
func report_unhandled_exception
report_unhandled_interrupt:
bl plat_panic_handler
no_ret plat_panic_handler
endfunc report_unhandled_exception
#endif /* CRASH_REPORTING */
func crash_panic
bl plat_panic_handler
no_ret plat_panic_handler
endfunc crash_panic

24
bl31/aarch64/runtime_exceptions.S
View File

@ -73,7 +73,7 @@
b.eq smc_handler64
/* Other kinds of synchronous exceptions are not handled */
bl report_unhandled_exception
no_ret report_unhandled_exception
.endm
@ -176,7 +176,7 @@ vector_base runtime_exceptions
*/
vector_entry sync_exception_sp_el0
/* We don't expect any synchronous exceptions from EL3 */
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size sync_exception_sp_el0
vector_entry irq_sp_el0
@ -184,17 +184,17 @@ vector_entry irq_sp_el0
* EL3 code is non-reentrant. Any asynchronous exception is a serious
* error. Loop infinitely.
*/
bl report_unhandled_interrupt
no_ret report_unhandled_interrupt
check_vector_size irq_sp_el0
vector_entry fiq_sp_el0
bl report_unhandled_interrupt
no_ret report_unhandled_interrupt
check_vector_size fiq_sp_el0
vector_entry serror_sp_el0
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size serror_sp_el0
/* ---------------------------------------------------------------------
@ -208,19 +208,19 @@ vector_entry sync_exception_sp_elx
* synchronous exception. There is a high probability that SP_EL3 is
* corrupted.
*/
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size sync_exception_sp_elx
vector_entry irq_sp_elx
bl report_unhandled_interrupt
no_ret report_unhandled_interrupt
check_vector_size irq_sp_elx
vector_entry fiq_sp_elx
bl report_unhandled_interrupt
no_ret report_unhandled_interrupt
check_vector_size fiq_sp_elx
vector_entry serror_sp_elx
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size serror_sp_elx
/* ---------------------------------------------------------------------
@ -250,7 +250,7 @@ vector_entry serror_aarch64
* SError exceptions from lower ELs are not currently supported.
* Report their occurrence.
*/
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size serror_aarch64
/* ---------------------------------------------------------------------
@ -280,7 +280,7 @@ vector_entry serror_aarch32
* SError exceptions from lower ELs are not currently supported.
* Report their occurrence.
*/
bl report_unhandled_exception
no_ret report_unhandled_exception
check_vector_size serror_aarch32
@ -415,5 +415,5 @@ smc_prohibited:
rt_svc_fw_critical_error:
/* Switch to SP_ELx */
msr spsel, #1
bl report_unhandled_exception
no_ret report_unhandled_exception
endfunc smc_handler

8
bl32/tsp/aarch64/tsp_entrypoint.S
View File

@ -391,7 +391,7 @@ tsp_sel1_intr_return:
/* Should never reach here */
tsp_sel1_int_entry_panic:
bl plat_panic_handler
no_ret plat_panic_handler
endfunc tsp_sel1_intr_entry
/*---------------------------------------------
@ -409,7 +409,7 @@ func tsp_cpu_resume_entry
restore_args_call_smc
/* Should never reach here */
bl plat_panic_handler
no_ret plat_panic_handler
endfunc tsp_cpu_resume_entry
/*---------------------------------------------
@ -422,7 +422,7 @@ func tsp_fast_smc_entry
restore_args_call_smc
/* Should never reach here */
bl plat_panic_handler
no_ret plat_panic_handler
endfunc tsp_fast_smc_entry
/*---------------------------------------------
@ -439,5 +439,5 @@ func tsp_std_smc_entry
restore_args_call_smc
/* Should never reach here */
bl plat_panic_handler
no_ret plat_panic_handler
endfunc tsp_std_smc_entry

28
bl32/tsp/aarch64/tsp_exceptions.S
View File

@ -105,19 +105,19 @@ vector_base tsp_exceptions
* -----------------------------------------------------
*/
vector_entry sync_exception_sp_el0
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size sync_exception_sp_el0
vector_entry irq_sp_el0
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size irq_sp_el0
vector_entry fiq_sp_el0
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size fiq_sp_el0
vector_entry serror_sp_el0
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size serror_sp_el0
@ -127,7 +127,7 @@ vector_entry serror_sp_el0
* -----------------------------------------------------
*/
vector_entry sync_exception_sp_elx
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size sync_exception_sp_elx
vector_entry irq_sp_elx
@ -139,7 +139,7 @@ vector_entry fiq_sp_elx
check_vector_size fiq_sp_elx
vector_entry serror_sp_elx
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size serror_sp_elx
@ -149,19 +149,19 @@ vector_entry serror_sp_elx
* -----------------------------------------------------
*/
vector_entry sync_exception_aarch64
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size sync_exception_aarch64
vector_entry irq_aarch64
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size irq_aarch64
vector_entry fiq_aarch64
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size fiq_aarch64
vector_entry serror_aarch64
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size serror_aarch64
@ -171,17 +171,17 @@ vector_entry serror_aarch64
* -----------------------------------------------------
*/
vector_entry sync_exception_aarch32
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size sync_exception_aarch32
vector_entry irq_aarch32
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size irq_aarch32
vector_entry fiq_aarch32
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size fiq_aarch32
vector_entry serror_aarch32
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size serror_aarch32

4
common/aarch32/debug.S
View File

@ -38,7 +38,7 @@
* The common implementation of do_panic for all BL stages
***********************************************************/
func do_panic
b plat_panic_handler
no_ret plat_panic_handler
endfunc do_panic
/***********************************************************
@ -50,5 +50,5 @@ func report_exception
mrs r0, cpsr
and r0, #MODE32_MASK
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
endfunc report_exception

2
common/aarch64/debug.S
View File

@ -191,5 +191,5 @@ _panic_handler:
/* Pass to plat_panic_handler the address from where el3_panic was
* called, not the address of the call from el3_panic. */
mov x30,x6
b plat_panic_handler
no_ret plat_panic_handler
endfunc do_panic

32
common/aarch64/early_exceptions.S
View File

@ -47,25 +47,25 @@ vector_base early_exceptions
vector_entry SynchronousExceptionSP0
mov x0, #SYNC_EXCEPTION_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionSP0
vector_entry IrqSP0
mov x0, #IRQ_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqSP0
vector_entry FiqSP0
mov x0, #FIQ_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqSP0
vector_entry SErrorSP0
mov x0, #SERROR_SP_EL0
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorSP0
/* -----------------------------------------------------
@ -75,25 +75,25 @@ vector_entry SErrorSP0
vector_entry SynchronousExceptionSPx
mov x0, #SYNC_EXCEPTION_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionSPx
vector_entry IrqSPx
mov x0, #IRQ_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqSPx
vector_entry FiqSPx
mov x0, #FIQ_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqSPx
vector_entry SErrorSPx
mov x0, #SERROR_SP_ELX
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorSPx
/* -----------------------------------------------------
@ -103,25 +103,25 @@ vector_entry SErrorSPx
vector_entry SynchronousExceptionA64
mov x0, #SYNC_EXCEPTION_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionA64
vector_entry IrqA64
mov x0, #IRQ_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqA64
vector_entry FiqA64
mov x0, #FIQ_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqA64
vector_entry SErrorA64
mov x0, #SERROR_AARCH64
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorA64
/* -----------------------------------------------------
@ -131,23 +131,23 @@ vector_entry SErrorA64
vector_entry SynchronousExceptionA32
mov x0, #SYNC_EXCEPTION_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SynchronousExceptionA32
vector_entry IrqA32
mov x0, #IRQ_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size IrqA32
vector_entry FiqA32
mov x0, #FIQ_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size FiqA32
vector_entry SErrorA32
mov x0, #SERROR_AARCH32
bl plat_report_exception
bl plat_panic_handler
no_ret plat_panic_handler
check_vector_size SErrorA32

22
include/common/aarch32/asm_macros.S
View File

@ -102,4 +102,26 @@
ldr r0, =(\_name + \_size)
.endm
/*
* Macro to mark instances where we're jumping to a function and don't
* expect a return. To provide the function being jumped to with
* additional information, we use 'bl' instruction to jump rather than
* 'b'.
*
* Debuggers infer the location of a call from where LR points to, which
* is usually the instruction after 'bl'. If this macro expansion
* happens to be the last location in a function, that'll cause the LR
* to point a location beyond the function, thereby misleading debugger
* back trace. We therefore insert a 'nop' after the function call for
* debug builds, unless 'skip_nop' parameter is non-zero.
*/
.macro no_ret _func:req, skip_nop=0
bl \_func
#if DEBUG
.ifeq \skip_nop
nop
.endif
#endif
.endm
#endif /* __ASM_MACROS_S__ */

2
include/common/aarch32/el3_common_macros.S
View File

@ -204,7 +204,7 @@
/* This is a cold boot on a secondary CPU */
bl plat_secondary_cold_boot_setup
/* plat_secondary_cold_boot_setup() is not supposed to return */
bl plat_panic_handler
no_ret plat_panic_handler
do_primary_cold_boot:
.endif /* _secondary_cold_boot */

22
include/common/aarch64/asm_macros.S
View File

@ -178,4 +178,26 @@
.endif
.endm
/*
* Macro to mark instances where we're jumping to a function and don't
* expect a return. To provide the function being jumped to with
* additional information, we use 'bl' instruction to jump rather than
* 'b'.
*
* Debuggers infer the location of a call from where LR points to, which
* is usually the instruction after 'bl'. If this macro expansion
* happens to be the last location in a function, that'll cause the LR
* to point a location beyond the function, thereby misleading debugger
* back trace. We therefore insert a 'nop' after the function call for
* debug builds, unless 'skip_nop' parameter is non-zero.
*/
.macro no_ret _func:req, skip_nop=0
bl \_func
#if DEBUG
.ifeq \skip_nop
nop
.endif
#endif
.endm
#endif /* __ASM_MACROS_S__ */

2
lib/psci/aarch32/psci_helpers.S
View File

@ -176,5 +176,5 @@ endfunc do_stack_maintenance
func psci_power_down_wfi
dsb sy // ensure write buffer empty
wfi
bl plat_panic_handler
no_ret plat_panic_handler
endfunc psci_power_down_wfi

2
lib/psci/aarch64/psci_helpers.S
View File

@ -167,7 +167,7 @@ endfunc psci_do_pwrup_cache_maintenance
func psci_power_down_wfi
dsb sy // ensure write buffer empty
wfi
bl plat_panic_handler
no_ret plat_panic_handler
endfunc psci_power_down_wfi
/* -----------------------------------------------------------------------

4
plat/arm/board/fvp/aarch64/fvp_helpers.S
View File

@ -111,7 +111,7 @@ secondary_cold_boot_wait:
*/
dsb sy
wfi
bl plat_panic_handler
no_ret plat_panic_handler
#else
mov_imm x0, PLAT_ARM_TRUSTED_MAILBOX_BASE
@ -182,7 +182,7 @@ warm_reset:
* ---------------------------------------------------------------------
*/
_panic_handler:
bl plat_panic_handler
no_ret plat_panic_handler
endfunc plat_get_my_entrypoint
/* -----------------------------------------------------

2
plat/arm/board/juno/aarch64/juno_helpers.S
View File

@ -201,7 +201,7 @@ func plat_reset_handler
JUMP_TO_HANDLER_IF_JUNO_R(2)
/* Board revision is not supported */
bl plat_panic_handler
no_ret plat_panic_handler
endfunc plat_reset_handler

2
plat/xilinx/zynqmp/aarch64/zynqmp_helpers.S
View File

@ -61,7 +61,7 @@ func plat_secondary_cold_boot_setup
*/
dsb sy
1:
bl plat_panic_handler
no_ret plat_panic_handler
endfunc plat_secondary_cold_boot_setup
func plat_is_my_cpu_primary