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py: Add casting to viper; add native mem stores to viper.

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Viper can now do the following:

def store(p:ptr8, c:int):
    p[0] = c

This does a store of c to the memory pointed to by p using a machine
instructions inline in the code.
This commit is contained in:
Damien George 2014-09-29 22:10:41 +01:00
parent 44c96b2314
commit e9dac3b4d0
5 changed files with 271 additions and 82 deletions
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305
py/emitnative.c
View File

@ -148,6 +148,10 @@
#define ASM_ADD_REG_REG(as, reg_dest, reg_src) asm_x64_add_r64_r64((as), (reg_dest), (reg_src))
#define ASM_SUB_REG_REG(as, reg_dest, reg_src) asm_x64_sub_r64_r64((as), (reg_dest), (reg_src))
#define ASM_STORE_REG_REG(as, reg_src, reg_base) asm_x64_mov_r64_to_disp((as), (reg_src), (reg_base), 0)
#define ASM_STORE8_REG_REG(as, reg_src, reg_base) asm_x64_mov_r8_to_disp((as), (reg_src), (reg_base), 0)
#define ASM_STORE16_REG_REG(as, reg_src, reg_base) asm_x64_mov_r16_to_disp((as), (reg_src), (reg_base), 0)
#elif N_X86
// x86 specific stuff
@ -269,6 +273,10 @@ STATIC byte mp_f_n_args[MP_F_NUMBER_OF] = {
#define ASM_ADD_REG_REG(as, reg_dest, reg_src) asm_x86_add_r32_r32((as), (reg_dest), (reg_src))
#define ASM_SUB_REG_REG(as, reg_dest, reg_src) asm_x86_sub_r32_r32((as), (reg_dest), (reg_src))
#define ASM_STORE_REG_REG(as, reg_src, reg_base) asm_x86_mov_r32_to_disp((as), (reg_src), (reg_base), 0)
#define ASM_STORE8_REG_REG(as, reg_src, reg_base) asm_x86_mov_r8_to_disp((as), (reg_src), (reg_base), 0)
#define ASM_STORE16_REG_REG(as, reg_src, reg_base) asm_x86_mov_r16_to_disp((as), (reg_src), (reg_base), 0)
#elif N_THUMB
// thumb specific stuff
@ -341,6 +349,10 @@ STATIC byte mp_f_n_args[MP_F_NUMBER_OF] = {
#define ASM_ADD_REG_REG(as, reg_dest, reg_src) asm_thumb_add_rlo_rlo_rlo((as), (reg_dest), (reg_dest), (reg_src))
#define ASM_SUB_REG_REG(as, reg_dest, reg_src) asm_thumb_sub_rlo_rlo_rlo((as), (reg_dest), (reg_dest), (reg_src))
#define ASM_STORE_REG_REG(as, reg_src, reg_base) asm_thumb_str_rlo_rlo_i5((as), (reg_src), (reg_base), 0)
#define ASM_STORE8_REG_REG(as, reg_src, reg_base) asm_thumb_strb_rlo_rlo_i5((as), (reg_src), (reg_base), 0)
#define ASM_STORE16_REG_REG(as, reg_src, reg_base) asm_thumb_strh_rlo_rlo_i5((as), (reg_src), (reg_base), 0)
#elif N_ARM
// ARM specific stuff
@ -414,6 +426,11 @@ STATIC byte mp_f_n_args[MP_F_NUMBER_OF] = {
#define ASM_ADD_REG_REG(as, reg_dest, reg_src) asm_arm_add_reg_reg_reg((as), (reg_dest), (reg_dest), (reg_src))
#define ASM_SUB_REG_REG(as, reg_dest, reg_src) asm_arm_sub_reg_reg_reg((as), (reg_dest), (reg_dest), (reg_src))
// TODO someone please implement str
#define ASM_STORE_REG_REG(as, reg_src, reg_base) asm_arm_str_reg_reg_i5((as), (reg_src), (reg_base), 0)
#define ASM_STORE8_REG_REG(as, reg_src, reg_base) asm_arm_strb_reg_reg_i5((as), (reg_src), (reg_base), 0)
#define ASM_STORE16_REG_REG(as, reg_src, reg_base) asm_arm_strh_reg_reg_i5((as), (reg_src), (reg_base), 0)
#else
#error unknown native emitter
@ -426,15 +443,21 @@ typedef enum {
STACK_IMM,
} stack_info_kind_t;
// these enums must be distinct and the bottom 2 bits
// must correspond to the correct MP_NATIVE_TYPE_xxx value
typedef enum {
VTYPE_PYOBJ = MP_NATIVE_TYPE_OBJ,
VTYPE_BOOL = MP_NATIVE_TYPE_BOOL,
VTYPE_INT = MP_NATIVE_TYPE_INT,
VTYPE_UINT = MP_NATIVE_TYPE_UINT,
VTYPE_UNBOUND,
VTYPE_PTR,
VTYPE_PTR_NONE,
VTYPE_BUILTIN_V_INT,
VTYPE_PYOBJ = 0x00 | MP_NATIVE_TYPE_OBJ,
VTYPE_BOOL = 0x00 | MP_NATIVE_TYPE_BOOL,
VTYPE_INT = 0x00 | MP_NATIVE_TYPE_INT,
VTYPE_UINT = 0x00 | MP_NATIVE_TYPE_UINT,
VTYPE_PTR = 0x10 | MP_NATIVE_TYPE_UINT, // pointer to word sized entity
VTYPE_PTR8 = 0x20 | MP_NATIVE_TYPE_UINT,
VTYPE_PTR16 = 0x30 | MP_NATIVE_TYPE_UINT,
VTYPE_PTR_NONE = 0x40 | MP_NATIVE_TYPE_UINT,
VTYPE_UNBOUND = 0x50 | MP_NATIVE_TYPE_OBJ,
VTYPE_BUILTIN_CAST = 0x60 | MP_NATIVE_TYPE_OBJ,
} vtype_kind_t;
typedef struct _stack_info_t {
@ -495,6 +518,9 @@ STATIC void emit_native_set_native_type(emit_t *emit, mp_uint_t op, mp_uint_t ar
case MP_QSTR_bool: type = VTYPE_BOOL; break;
case MP_QSTR_int: type = VTYPE_INT; break;
case MP_QSTR_uint: type = VTYPE_UINT; break;
case MP_QSTR_ptr: type = VTYPE_PTR; break;
case MP_QSTR_ptr8: type = VTYPE_PTR8; break;
case MP_QSTR_ptr16: type = VTYPE_PTR16; break;
default: printf("ViperTypeError: unknown type %s\n", qstr_str(arg2)); return;
}
if (op == MP_EMIT_NATIVE_TYPE_RETURN) {
@ -606,6 +632,7 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
}
}
// TODO don't load r7 if we don't need it
asm_thumb_mov_reg_i32(emit->as, ASM_THUMB_REG_R7, (mp_uint_t)mp_fun_table);
#elif N_ARM
for (int i = 0; i < scope->num_pos_args; i++) {
@ -623,6 +650,7 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
}
}
// TODO don't load r7 if we don't need it
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#else
#error not implemented
@ -645,7 +673,7 @@ STATIC void emit_native_end_pass(emit_t *emit) {
mp_uint_t f_len = ASM_GET_CODE_SIZE(emit->as);
// compute type signature
// TODO check that viper types here convert correctly to valid types for emit glue
// note that the lower 2 bits of a vtype are tho correct MP_NATIVE_TYPE_xxx
mp_uint_t type_sig = emit->return_vtype & 3;
for (mp_uint_t i = 0; i < emit->scope->num_pos_args; i++) {
type_sig |= (emit->local_vtype[i] & 3) << (i * 2 + 2);
@ -796,12 +824,26 @@ STATIC void emit_access_stack(emit_t *emit, int pos, vtype_kind_t *vtype, int re
}
}
// If stacked value is in a register, then *reg_dest is set to that register.
// Otherwise, the value is put in *reg_dest.
STATIC void emit_pre_pop_reg_flexible(emit_t *emit, vtype_kind_t *vtype, int *reg_dest) {
// does an efficient X=pop(); discard(); push(X)
// needs a (non-temp) register in case the poped element was stored in the stack
STATIC void emit_fold_stack_top(emit_t *emit, int reg_dest) {
stack_info_t *si = &emit->stack_info[emit->stack_size - 2];
si[0] = si[1];
if (si->kind == STACK_VALUE) {
// if folded element was on the stack we need to put it in a register
ASM_MOV_LOCAL_TO_REG(emit->as, emit->stack_start + emit->stack_size - 1, reg_dest);
si->kind = STACK_REG;
si->u_reg = reg_dest;
}
adjust_stack(emit, -1);
}
// If stacked value is in a register and the register is not r1 or r2, then
// *reg_dest is set to that register. Otherwise the value is put in *reg_dest.
STATIC void emit_pre_pop_reg_flexible(emit_t *emit, vtype_kind_t *vtype, int *reg_dest, int not_r1, int not_r2) {
emit->last_emit_was_return_value = false;
stack_info_t *si = peek_stack(emit, 0);
if (si->kind == STACK_REG) {
if (si->kind == STACK_REG && si->u_reg != not_r1 && si->u_reg != not_r2) {
*vtype = si->vtype;
*reg_dest = si->u_reg;
need_reg_single(emit, *reg_dest, 1);
@ -836,6 +878,11 @@ STATIC void emit_pre_pop_reg_reg_reg(emit_t *emit, vtype_kind_t *vtypea, int reg
STATIC void emit_post(emit_t *emit) {
}
STATIC void emit_post_top_set_vtype(emit_t *emit, vtype_kind_t new_vtype) {
stack_info_t *si = &emit->stack_info[emit->stack_size - 1];
si->vtype = new_vtype;
}
STATIC void emit_post_push_reg(emit_t *emit, vtype_kind_t vtype, int reg) {
stack_info_t *si = &emit->stack_info[emit->stack_size];
si->vtype = vtype;
@ -954,6 +1001,7 @@ STATIC void emit_get_stack_pointer_to_reg_for_pop(emit_t *emit, mp_uint_t reg_de
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, si->vtype, REG_ARG_2); // arg2 = type
ASM_MOV_REG_TO_LOCAL(emit->as, REG_RET, local_num);
si->vtype = VTYPE_PYOBJ;
DEBUG_printf(" convert_native_to_obj(local_num=" UINT_FMT ")\n", local_num);
}
}
@ -1173,9 +1221,23 @@ STATIC void emit_native_load_name(emit_t *emit, qstr qst) {
}
STATIC void emit_native_load_global(emit_t *emit, qstr qst) {
DEBUG_printf("load_global(%s)\n", qstr_str(qst));
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_LOAD_GLOBAL, qst, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
// check for builtin casting operators
if (emit->do_viper_types && qst == MP_QSTR_int) {
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, VTYPE_INT);
} else if (emit->do_viper_types && qst == MP_QSTR_uint) {
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, VTYPE_UINT);
} else if (emit->do_viper_types && qst == MP_QSTR_ptr) {
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, VTYPE_PTR);
} else if (emit->do_viper_types && qst == MP_QSTR_ptr8) {
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, VTYPE_PTR8);
} else if (emit->do_viper_types && qst == MP_QSTR_ptr16) {
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, VTYPE_PTR16);
} else {
emit_call_with_imm_arg(emit, MP_F_LOAD_GLOBAL, qst, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
}
STATIC void emit_native_load_attr(emit_t *emit, qstr qst) {
@ -1314,16 +1376,103 @@ STATIC void emit_native_store_attr(emit_t *emit, qstr qst) {
}
STATIC void emit_native_store_subscr(emit_t *emit) {
// depends on type of subject:
// - integer, function, pointer to structure: error
// - pointer to integers: store as per array
// - Python object: call runtime with converted object or type info
vtype_kind_t vtype_index, vtype_base, vtype_value;
emit_pre_pop_reg_reg_reg(emit, &vtype_index, REG_ARG_2, &vtype_base, REG_ARG_1, &vtype_value, REG_ARG_3); // index, base, value to store
assert(vtype_index == VTYPE_PYOBJ);
assert(vtype_base == VTYPE_PYOBJ);
assert(vtype_value == VTYPE_PYOBJ);
emit_call(emit, MP_F_OBJ_SUBSCR);
DEBUG_printf("store_subscr\n");
// need to compile: base[index] = value
// pop: index, base, value
// optimise case where index is an immediate
vtype_kind_t vtype_base = peek_vtype(emit, 1);
if (vtype_base == VTYPE_PYOBJ) {
// standard Python call
vtype_kind_t vtype_index, vtype_value;
emit_pre_pop_reg_reg_reg(emit, &vtype_index, REG_ARG_2, &vtype_base, REG_ARG_1, &vtype_value, REG_ARG_3);
assert(vtype_index == VTYPE_PYOBJ);
assert(vtype_value == VTYPE_PYOBJ);
emit_call(emit, MP_F_OBJ_SUBSCR);
} else {
// viper call
stack_info_t *top = peek_stack(emit, 0);
if (top->vtype == VTYPE_INT && top->kind == STACK_IMM) {
// index is an immediate
mp_int_t index_value = top->u_imm;
emit_pre_pop_discard(emit); // discard index
vtype_kind_t vtype_value;
int reg_base = REG_ARG_1;
int reg_index = REG_ARG_2;
int reg_value = REG_ARG_3;
emit_pre_pop_reg_flexible(emit, &vtype_base, &reg_base, reg_index, reg_value);
emit_pre_pop_reg_flexible(emit, &vtype_value, &reg_value, reg_base, reg_index);
switch (vtype_base) {
case VTYPE_PTR8: {
// pointer to 8-bit memory
// TODO optimise to use thumb strb r1, [r2, r3]
if (index_value != 0) {
// index is non-zero
#if N_THUMB
if (index_value > 0 && index_value < 32) {
asm_thumb_strb_rlo_rlo_i5(emit->as, reg_value, reg_base, index_value);
break;
}
#endif
ASM_MOV_IMM_TO_REG(emit->as, index_value, reg_index);
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add index to base
reg_base = reg_index;
}
ASM_STORE8_REG_REG(emit->as, reg_value, reg_base); // store value to (base+index)
break;
}
case VTYPE_PTR16: {
// pointer to 16-bit memory
if (index_value != 0) {
// index is a non-zero immediate
#if N_THUMB
if (index_value > 0 && index_value < 32) {
asm_thumb_strh_rlo_rlo_i5(emit->as, reg_value, reg_base, index_value);
break;
}
#endif
ASM_MOV_IMM_TO_REG(emit->as, index_value << 1, reg_index);
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add 2*index to base
reg_base = reg_index;
}
ASM_STORE16_REG_REG(emit->as, reg_value, reg_base); // store value to (base+2*index)
break;
}
default:
printf("ViperTypeError: can't store to type %d\n", vtype_base);
}
} else {
// index is not an immediate
vtype_kind_t vtype_index, vtype_value;
int reg_index = REG_ARG_2;
int reg_value = REG_ARG_3;
emit_pre_pop_reg_flexible(emit, &vtype_index, &reg_index, REG_ARG_1, reg_value);
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1);
emit_pre_pop_reg_flexible(emit, &vtype_value, &reg_value, REG_ARG_1, reg_index);
switch (vtype_base) {
case VTYPE_PTR8: {
// pointer to 8-bit memory
// TODO optimise to use thumb strb r1, [r2, r3]
assert(vtype_index == VTYPE_INT);
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
ASM_STORE8_REG_REG(emit->as, reg_value, REG_ARG_1); // store value to (base+index)
break;
}
case VTYPE_PTR16: {
// pointer to 16-bit memory
assert(vtype_index == VTYPE_INT);
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
ASM_STORE16_REG_REG(emit->as, reg_value, REG_ARG_1); // store value to (base+2*index)
break;
}
default:
printf("ViperTypeError: can't store to type %d\n", vtype_base);
}
}
}
}
STATIC void emit_native_delete_fast(emit_t *emit, qstr qst, mp_uint_t local_num) {
@ -1581,7 +1730,7 @@ STATIC void emit_native_binary_op(emit_t *emit, mp_binary_op_t op) {
}
#endif
int reg_rhs = REG_ARG_3;
emit_pre_pop_reg_flexible(emit, &vtype_rhs, &reg_rhs);
emit_pre_pop_reg_flexible(emit, &vtype_rhs, &reg_rhs, REG_RET, REG_ARG_2);
emit_pre_pop_reg(emit, &vtype_lhs, REG_ARG_2);
if (0) {
// dummy
@ -1813,64 +1962,53 @@ STATIC void emit_native_make_closure(emit_t *emit, scope_t *scope, mp_uint_t n_c
STATIC void emit_native_call_function(emit_t *emit, mp_uint_t n_positional, mp_uint_t n_keyword, mp_uint_t star_flags) {
DEBUG_printf("call_function(n_pos=" UINT_FMT ", n_kw=" UINT_FMT ", star_flags=" UINT_FMT ")\n", n_positional, n_keyword, star_flags);
// call special viper runtime routine with type info for args, and wanted type info for return
// TODO: in viper mode, call special runtime routine with type info for args,
// and wanted type info for return, to remove need for boxing/unboxing
assert(!star_flags);
/* we no longer have these _n specific call_function's
* they anyway push args into an array
* and they would take too much room in the native dispatch table
if (n_positional == 0) {
vtype_kind_t vtype_fun;
emit_native_pre(emit);
vtype_kind_t vtype_fun = peek_vtype(emit, n_positional + 2 * n_keyword);
if (vtype_fun == VTYPE_BUILTIN_CAST) {
// casting operator
assert(n_positional == 1 && n_keyword == 0);
DEBUG_printf(" cast to %d\n", vtype_fun);
vtype_kind_t vtype_cast = peek_stack(emit, 1)->u_imm;
switch (peek_vtype(emit, 0)) {
case VTYPE_PYOBJ: {
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_ARG_1);
emit_pre_pop_discard(emit);
emit_call_with_imm_arg(emit, MP_F_CONVERT_OBJ_TO_NATIVE, MP_NATIVE_TYPE_UINT, REG_ARG_2); // arg2 = type
emit_post_push_reg(emit, vtype_cast, REG_RET);
break;
}
case VTYPE_BOOL:
case VTYPE_INT:
case VTYPE_UINT:
case VTYPE_PTR:
case VTYPE_PTR8:
case VTYPE_PTR16:
case VTYPE_PTR_NONE:
emit_fold_stack_top(emit, REG_ARG_1);
emit_post_top_set_vtype(emit, vtype_cast);
break;
default:
assert(!"TODO: convert obj to int");
}
} else {
if (n_positional != 0 || n_keyword != 0) {
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_positional + 2 * n_keyword); // pointer to args
}
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
assert(vtype_fun == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_0);
} else if (n_positional == 1) {
vtype_kind_t vtype_fun, vtype_arg1;
emit_pre_pop_reg_reg(emit, &vtype_arg1, REG_ARG_2, &vtype_fun, REG_ARG_1); // the single argument, the function
assert(vtype_fun == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_1);
} else if (n_positional == 2) {
vtype_kind_t vtype_fun, vtype_arg1, vtype_arg2;
emit_pre_pop_reg_reg_reg(emit, &vtype_arg2, REG_ARG_3, &vtype_arg1, REG_ARG_2, &vtype_fun, REG_ARG_1); // the second argument, the first argument, the function
assert(vtype_fun == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
assert(vtype_arg2 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_2);
} else {
*/
emit_native_pre(emit);
if (n_positional != 0 || n_keyword != 0) {
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_positional + 2 * n_keyword); // pointer to args
emit_call_with_imm_arg(emit, MP_F_NATIVE_CALL_FUNCTION_N_KW, n_positional | (n_keyword << 8), REG_ARG_2);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
vtype_kind_t vtype_fun;
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
assert(vtype_fun == VTYPE_PYOBJ);
emit_call_with_imm_arg(emit, MP_F_NATIVE_CALL_FUNCTION_N_KW, n_positional | (n_keyword << 8), REG_ARG_2);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_call_method(emit_t *emit, mp_uint_t n_positional, mp_uint_t n_keyword, mp_uint_t star_flags) {
assert(!star_flags);
/*
if (n_positional == 0) {
vtype_kind_t vtype_meth, vtype_self;
emit_pre_pop_reg_reg(emit, &vtype_self, REG_ARG_2, &vtype_meth, REG_ARG_1); // the self object (or NULL), the method
assert(vtype_meth == VTYPE_PYOBJ);
assert(vtype_self == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_METHOD_1);
} else if (n_positional == 1) {
vtype_kind_t vtype_meth, vtype_self, vtype_arg1;
emit_pre_pop_reg_reg_reg(emit, &vtype_arg1, REG_ARG_3, &vtype_self, REG_ARG_2, &vtype_meth, REG_ARG_1); // the first argument, the self object (or NULL), the method
assert(vtype_meth == VTYPE_PYOBJ);
assert(vtype_self == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_METHOD_2);
} else {
*/
emit_native_pre(emit);
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 2 + n_positional + 2 * n_keyword); // pointer to items, including meth and self
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW, n_positional, REG_ARG_1, n_keyword, REG_ARG_2);
@ -1879,17 +2017,24 @@ STATIC void emit_native_call_method(emit_t *emit, mp_uint_t n_positional, mp_uin
STATIC void emit_native_return_value(emit_t *emit) {
DEBUG_printf("return_value\n");
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_RET);
if (emit->do_viper_types) {
if (vtype == VTYPE_PTR_NONE) {
if (peek_vtype(emit, 0) == VTYPE_PTR_NONE) {
emit_pre_pop_discard(emit);
if (emit->return_vtype == VTYPE_PYOBJ) {
ASM_MOV_IMM_TO_REG(emit->as, (mp_uint_t)mp_const_none, REG_RET);
} else {
ASM_MOV_IMM_TO_REG(emit->as, 0, REG_RET);
}
} else {
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_RET);
if (vtype != emit->return_vtype) {
printf("ViperTypeError: incompatible return type\n");
}
} else if (vtype != emit->return_vtype) {
printf("ViperTypeError: incompatible return type\n");
}
} else {
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_RET);
assert(vtype == VTYPE_PYOBJ);
}
emit->last_emit_was_return_value = true;

12
py/nativeglue.c
View File

@ -51,8 +51,16 @@ mp_uint_t mp_convert_obj_to_native(mp_obj_t obj, mp_uint_t type) {
switch (type & 3) {
case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj;
case MP_NATIVE_TYPE_BOOL:
case MP_NATIVE_TYPE_INT:
case MP_NATIVE_TYPE_UINT: return mp_obj_get_int(obj);
case MP_NATIVE_TYPE_INT: return mp_obj_get_int(obj);
case MP_NATIVE_TYPE_UINT: {
mp_buffer_info_t bufinfo;
if (mp_get_buffer(obj, &bufinfo, MP_BUFFER_RW)) {
return (mp_uint_t)bufinfo.buf;
} else {
// TODO should be mp_obj_get_uint_truncated or something
return mp_obj_get_int(obj);
}
}
default: assert(0); return 0;
}
}

3
py/qstrdefs.h
View File

@ -77,6 +77,9 @@ Q(const)
Q(native)
Q(viper)
Q(uint)
Q(ptr)
Q(ptr8)
Q(ptr16)
#endif
#if MICROPY_EMIT_INLINE_THUMB

29
tests/micropython/viper_ptr8_store.py Normal file
View File

@ -0,0 +1,29 @@
# test ptr8 type
@micropython.viper
def set(dest:ptr8, val:int):
dest[0] = val
@micropython.viper
def memset(dest:ptr8, val:int, n:int):
for i in range(n):
dest[i] = val
@micropython.viper
def memset2(dest_in, val:int):
dest = ptr8(dest_in)
n = int(len(dest_in))
for i in range(n):
dest[i] = val
b = bytearray(4)
print(b)
set(b, 42)
print(b)
memset(b, 43, len(b))
print(b)
memset2(b, 44)
print(b)

4
tests/micropython/viper_ptr8_store.py.exp Normal file
View File

@ -0,0 +1,4 @@
bytearray(b'\x00\x00\x00\x00')
bytearray(b'*\x00\x00\x00')
bytearray(b'++++')
bytearray(b',,,,')