diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2012-08-30 06:10:28 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2012-08-30 06:10:28 +0000 |
| commit | 4bc38b10926c1c4016502548804b1aa07c0bfce8 (patch) | |
| tree | c0cabb030014530f02a21861283c21095c4e218a /sim | |
| parent | b2f77e5e25e255026e18463f63470612c3fcb348 (diff) | |
| download | gdb-4bc38b10926c1c4016502548804b1aa07c0bfce8.tar.gz | |
sim: cr16: improve trap handling
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/cr16/ChangeLog | 2 | ||||
| -rw-r--r-- | sim/cr16/cr16_sim.h | 6 | ||||
| -rw-r--r-- | sim/cr16/interp.c | 4 | ||||
| -rw-r--r-- | sim/cr16/simops.c | 21 |
4 files changed, 31 insertions, 2 deletions
diff --git a/sim/cr16/ChangeLog b/sim/cr16/ChangeLog index 094d54c7232..f0c62c35257 100644 --- a/sim/cr16/ChangeLog +++ b/sim/cr16/ChangeLog @@ -1,6 +1,8 @@ 2012-08-28 Kaushik Phatak <kaushik.phatak@kpitcummins.com> + * cr16_sim.h: Add defines for TRAP handling. * interp.c (sim_complete_command): New stub function. + * simops.c: Breakpoint handling code. 2012-06-17 Mike Frysinger <vapier@gentoo.org> diff --git a/sim/cr16/cr16_sim.h b/sim/cr16/cr16_sim.h index c7783ba1714..7252b143c06 100644 --- a/sim/cr16/cr16_sim.h +++ b/sim/cr16/cr16_sim.h @@ -472,3 +472,9 @@ extern void write_longlong PARAMS ((uint8 *addr, int64 data)); PSR is masked for zero bits. */ extern creg_t move_to_cr (int cr, creg_t mask, creg_t val, int psw_hw_p); + +#ifndef SIGTRAP +#define SIGTRAP 5 +#endif +/* Special purpose trap */ +#define TRAP_BREAKPOINT 8 diff --git a/sim/cr16/interp.c b/sim/cr16/interp.c index 1207906b410..36f848ef870 100644 --- a/sim/cr16/interp.c +++ b/sim/cr16/interp.c @@ -1192,7 +1192,11 @@ sim_resume (SIM_DESC sd, int step, int siggnal) iaddr = imem_addr ((uint32)PC); if (iaddr == State.mem.fault) { +#ifdef SIGBUS State.exception = SIGBUS; +#else + State.exception = SIGSEGV; +#endif break; } diff --git a/sim/cr16/simops.c b/sim/cr16/simops.c index f8fee8a0d23..2e5e9eb3f90 100644 --- a/sim/cr16/simops.c +++ b/sim/cr16/simops.c @@ -5059,6 +5059,8 @@ OP_14C_14 () void OP_C_C () { + uint32 tmp; + uint16 a; trace_input ("excp", OP_CONSTANT4, OP_VOID, OP_VOID); switch (OP[0]) { @@ -5465,9 +5467,24 @@ OP_C_C () #endif default: - cr16_callback->error (cr16_callback, "Unknown syscall %d", FUNC); + a = OP[0]; + switch (a) + { + case TRAP_BREAKPOINT: + State.exception = SIGTRAP; + tmp = (PC); + JMP(tmp); + trace_output_void (); + break; + case SIGTRAP: /* supervisor call ? */ + State.exception = SIG_CR16_EXIT; + trace_output_void (); + break; + default: + cr16_callback->error (cr16_callback, "Unknown syscall %d", FUNC); + break; + } } - if ((uint16) result == (uint16) -1) RETERR (cr16_callback->get_errno(cr16_callback)); else |