diff options
| author | Heinrich Schuchardt <[email protected]> | 2019-06-23 12:59:31 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2019-07-18 11:31:24 -0400 |
| commit | 0c1456d571e77000a98cdf5009fad6277426aa75 (patch) | |
| tree | 770f2cefb517aa6b553d1369d735d02c03dace66 /scripts | |
| parent | bd8fbd8a13b8a696aed312753f46432b19b61fd6 (diff) | |
ARM: correct detection of thumb mode
When a crash occurs in thumb mode the crash dump is incorrect. This is due
to the usage of a non-existing configuration variable CONFIG_ARM_THUMB in
the definition of macro thumb_mode(regs).
Use CONFIG_IS_ENABLED(SYS_THUMB_BUILD) to detect that the code has been
compiled for thumb mode. Remove ARM_THUMB from config_whitelist.txt.
With the patch crash dumps indicate thumb mode correctly.
On a system with thumb mode:
=> exception unaligned
data abort
pc : [<8f7a2b52>] lr : [<8f7ab1ef>]
reloc pc : [<1780cb52>] lr : [<178151ef>]
sp : 8ed8c3f8 ip : 8f7a2b4d fp : 00000002
r10: 8f7f8228 r9 : 8ed95ea8 r8 : 8ed99488
r7 : 8f7ab141 r6 : 00000000 r5 : 8ed8c3f9 r4 : 8f7f6390
r3 : 8ed9948c r2 : 00000001 r1 : 00000000 r0 : 8f7f6390
Flags: nzCv IRQs off FIQs off Mode SVC_32 (T)
Code: 8f7e 466d f105 0501 (e9d5) 6700
The Flags line has '(T)' and in the Code line the output is in u16 groups.
On a system without thumb mode:
=> exception breakpoint
prefetch abort
pc : [<7ff5a5c8>] lr : [<7ff675ec>]
reloc pc : [<0000e5c8>] lr : [<0001b5ec>]
sp : 7ee0ad80 ip : 7ff5a5cc fp : 7ff674cc
r10: 00000002 r9 : 7ef0bed8 r8 : 7ffd6214
r7 : 7ef0e080 r6 : 00000000 r5 : 7ffd4090 r4 : 00000000
r3 : 7ef0e084 r2 : 00000001 r1 : 00000000 r0 : 7ffd4090
Flags: nzCv IRQs off FIQs off Mode SVC_32
Code: e1a0500d e2855001 e1c560d0 e3a00001 (e12fff1e)
The Flags line does not show '(T)' and in the Code line the output is in
u32 groups.
Reported-by: Marek Vasut <[email protected]>
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/config_whitelist.txt | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt index 79872baeda0..bd167959b3f 100644 --- a/scripts/config_whitelist.txt +++ b/scripts/config_whitelist.txt @@ -61,7 +61,6 @@ CONFIG_ARM_FREQ CONFIG_ARM_GIC_BASE_ADDRESS CONFIG_ARM_PL180_MMCI_BASE CONFIG_ARM_PL180_MMCI_CLOCK_FREQ -CONFIG_ARM_THUMB CONFIG_ARP_TIMEOUT CONFIG_ASTRO_COFDMDUOS2 CONFIG_ASTRO_TWIN7S2 |