diff options
Diffstat (limited to 'powerpc/Asm.v')
| -rw-r--r-- | powerpc/Asm.v | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/powerpc/Asm.v b/powerpc/Asm.v index 746a610b..aa15547b 100644 --- a/powerpc/Asm.v +++ b/powerpc/Asm.v @@ -239,6 +239,7 @@ Inductive instruction : Type := | Pld: ireg -> constant -> ireg -> instruction (**r load 64-bit int (PPC64) *) | Pldx: ireg -> ireg -> ireg -> instruction (**r same, with 2 index regs *) | Pld_a: ireg -> constant -> ireg -> instruction (**r load 64-bit quantity to int reg (PPC64) *) + | Pldbrx: ireg -> ireg -> ireg -> instruction (**r load 64-bit int and reverse endianness (PPC64) *) | Pldx_a: ireg -> ireg -> ireg -> instruction (**r same, with 2 index regs *) | Plfd: freg -> constant -> ireg -> instruction (**r load 64-bit float *) | Plfdx: freg -> ireg -> ireg -> instruction (**r same, with 2 index regs *) @@ -307,6 +308,7 @@ Inductive instruction : Type := | Pstbx: ireg -> ireg -> ireg -> instruction (**r same, with 2 index regs *) | Pstd: ireg -> constant -> ireg -> instruction (**r store 64-bit integer (PPC64) *) | Pstdx: ireg -> ireg -> ireg -> instruction (**r same, with 2 index regs (PPC64) *) + | Pstdbrx: ireg -> ireg -> ireg -> instruction (**r store 64-bit int with reverse endianness (PPC64) *) | Pstdu: ireg -> constant -> ireg -> instruction (**r store 64-bit integer with update (PPC64) *) | Pstd_a: ireg -> constant -> ireg -> instruction (**r store 64-bit quantity from int reg (PPC64) *) | Pstdx_a: ireg -> ireg -> ireg -> instruction (**r same, with 2 index regs (PPC64) *) @@ -1077,6 +1079,7 @@ Definition exec_instr (f: function) (i: instruction) (rs: regset) (m: mem) : out | Picbi _ _ | Picbtls _ _ _ | Pisync + | Pldbrx _ _ _ | Plwsync | Plhbrx _ _ _ | Plwzu _ _ _ @@ -1086,6 +1089,7 @@ Definition exec_instr (f: function) (i: instruction) (rs: regset) (m: mem) : out | Pmtspr _ _ | Prldicl _ _ _ _ | Prldimi _ _ _ _ + | Pstdbrx _ _ _ | Pstdu _ _ _ | Pstwbrx _ _ _ | Pstwcx_ _ _ _ @@ -1126,6 +1130,15 @@ Definition preg_of (r: mreg) : preg := | F28 => FPR28 | F29 => FPR29 | F30 => FPR30 | F31 => FPR31 end. +(** Undefine all registers except SP and callee-save registers *) + +Definition undef_caller_save_regs (rs: regset) : regset := + fun r => + if preg_eq r SP + || In_dec preg_eq r (List.map preg_of (List.filter is_callee_save all_mregs)) + then rs r + else Vundef. + (** Extract the values of the arguments of an external call. We exploit the calling conventions from module [Conventions], except that we use PPC registers instead of locations. *) @@ -1185,7 +1198,7 @@ Inductive step: state -> trace -> state -> Prop := Genv.find_funct_ptr ge b = Some (External ef) -> external_call ef ge args m t res m' -> extcall_arguments rs m (ef_sig ef) args -> - rs' = (set_pair (loc_external_result (ef_sig ef)) res rs) #PC <- (rs RA) -> + rs' = (set_pair (loc_external_result (ef_sig ef)) res (undef_caller_save_regs rs)) #PC <- (rs RA) -> step (State rs m) t (State rs' m'). End RELSEM. |