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| author | Andrew Cagney <cagney@redhat.com> | 1998-02-13 05:22:49 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 1998-02-13 05:22:49 +0000 |
| commit | ac9a7d8a2cf9ffc4dbd869db4283002402cf595e (patch) | |
| tree | a6de094fb475c3616505fd820119df919797a699 /sim/d10v | |
| parent | 93c6a010dc099f1ce3ec11872642d74822acd75f (diff) | |
| download | ppe42-binutils-ac9a7d8a2cf9ffc4dbd869db4283002402cf595e.tar.gz ppe42-binutils-ac9a7d8a2cf9ffc4dbd869db4283002402cf595e.zip | |
Implement separate user (SPU) and interrupt (SPI) stack pointers.
Diffstat (limited to 'sim/d10v')
| -rw-r--r-- | sim/d10v/ChangeLog | 8 | ||||
| -rw-r--r-- | sim/d10v/d10v_sim.h | 5 | ||||
| -rw-r--r-- | sim/d10v/simops.c | 2 |
3 files changed, 15 insertions, 0 deletions
diff --git a/sim/d10v/ChangeLog b/sim/d10v/ChangeLog index 4294cd7f42..7c884fbf25 100644 --- a/sim/d10v/ChangeLog +++ b/sim/d10v/ChangeLog @@ -1,3 +1,11 @@ +Fri Feb 13 15:15:58 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * simops.c (move_to_cr): Sync regs[SP_IDX] with State.sp according + to PSW:SM. + + * d10v_sim.h (struct _state): Add sp, as holding area for SPI/SPU. + (SP_IDX): Define. + Wed Feb 11 16:53:49 1998 Andrew Cagney <cagney@b1.cygnus.com> * simops.c (OP_5F00): Call error instead of abort for unknown diff --git a/sim/d10v/d10v_sim.h b/sim/d10v/d10v_sim.h index df95426ea1..665c529bbf 100644 --- a/sim/d10v/d10v_sim.h +++ b/sim/d10v/d10v_sim.h @@ -75,10 +75,15 @@ enum _ins_type extern unsigned long ins_type_counters[ (int)INS_MAX ]; +enum { + SP_IDX = 15, +}; + struct _state { reg_t regs[16]; /* general-purpose registers */ reg_t cregs[16]; /* control registers */ + reg_t sp[2]; /* holding area for SPI(0)/SPU(1) */ int64 a[2]; /* accumulators */ uint8 SM; uint8 EA; diff --git a/sim/d10v/simops.c b/sim/d10v/simops.c index 9263c423dc..ef34f9423b 100644 --- a/sim/d10v/simops.c +++ b/sim/d10v/simops.c @@ -50,6 +50,7 @@ move_to_cr (int cr, reg_t val) switch (cr) { case PSW_CR: + State.sp[State.SM] = State.regs[SP_IDX]; /* save old SP */ State.SM = (val & PSW_SM_BIT) != 0; State.EA = (val & PSW_EA_BIT) != 0; State.DB = (val & PSW_DB_BIT) != 0; @@ -62,6 +63,7 @@ move_to_cr (int cr, reg_t val) State.F0 = (val & PSW_F0_BIT) != 0; State.F1 = (val & PSW_F1_BIT) != 0; State.C = (val & PSW_C_BIT) != 0; + State.regs[SP_IDX] = State.sp[State.SM]; /* restore new SP */ if (State.ST && !State.FX) { (*d10v_callback->printf_filtered) |
