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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12476
Summary: ARM/THUMB thunk calls broken
Product: gcc
Version: 3.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: thomas at koeller dot dyndns dot org
CC: gcc-bugs at gcc dot gnu dot org,thomas dot koeller at
baslerweb dot com
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: arm-ecos-elf
When compiling ARM programs in THUMB mode, thunks use a 'b' instruction to branch to
the target function. Since the 'b' instruction has a very limited adressing range (+/-
256
bytes), and the thunk and its target function are placed in different sections,
linking errors
are very common:
csr_camerastatus.o: In function `non-virtual thunk [nv:-24] to
CSR_CAMERASTATUS::SetProtocolError(ProtocolErrorHandler::EPROT_ERR_VAL)':
csr_camerastatus.o(.gnu.linkonce.t._ZThn24_N16CSR_CAMERASTATUS16SetProtocolErrorEN20ProtocolErrorHandler13EPROT_ERR_VALE+0x2):
relocation truncated to fit: R_ARM_THM_PC11
CSR_CAMERASTATUS::SetProtocolError(ProtocolErrorHandler::EPROT_ERR_VAL)
