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py: Make more asmthumb functions inline to reduce code size.

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This commit is contained in:
Damien George
2015-02-24 16:32:52 +00:00
parent 8f7976ba0d
commit e41b21c01e
3 changed files with 33 additions and 48 deletions
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44
py/asmthumb.c
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@@ -260,21 +260,6 @@ void asm_thumb_op32(asm_thumb_t *as, uint op1, uint op2) {
c[3] = op2 >> 8;
}
#define OP_FORMAT_2(op, rlo_dest, rlo_src, src_b) ((op) | ((src_b) << 6) | ((rlo_src) << 3) | (rlo_dest))
void asm_thumb_format_2(asm_thumb_t *as, uint op, uint rlo_dest, uint rlo_src, int src_b) {
assert(rlo_dest < ASM_THUMB_REG_R8);
assert(rlo_src < ASM_THUMB_REG_R8);
asm_thumb_op16(as, OP_FORMAT_2(op, rlo_dest, rlo_src, src_b));
}
#define OP_FORMAT_3(op, rlo, i8) ((op) | ((rlo) << 8) | (i8))
void asm_thumb_format_3(asm_thumb_t *as, uint op, uint rlo, int i8) {
assert(rlo < ASM_THUMB_REG_R8);
asm_thumb_op16(as, OP_FORMAT_3(op, rlo, i8));
}
#define OP_FORMAT_4(op, rlo_dest, rlo_src) ((op) | ((rlo_src) << 3) | (rlo_dest))
void asm_thumb_format_4(asm_thumb_t *as, uint op, uint rlo_dest, uint rlo_src) {
@@ -283,12 +268,6 @@ void asm_thumb_format_4(asm_thumb_t *as, uint op, uint rlo_dest, uint rlo_src) {
asm_thumb_op16(as, OP_FORMAT_4(op, rlo_dest, rlo_src));
}
#define OP_FORMAT_9_10(op, rlo_dest, rlo_base, offset) ((op) | (((offset) << 6) & 0x07c0) | ((rlo_base) << 3) | (rlo_dest))
void asm_thumb_format_9_10(asm_thumb_t *as, uint op, uint rlo_dest, uint rlo_base, uint offset) {
asm_thumb_op16(as, OP_FORMAT_9_10(op, rlo_dest, rlo_base, offset));
}
void asm_thumb_mov_reg_reg(asm_thumb_t *as, uint reg_dest, uint reg_src) {
uint op_lo;
if (reg_src < 8) {
@@ -305,26 +284,13 @@ void asm_thumb_mov_reg_reg(asm_thumb_t *as, uint reg_dest, uint reg_src) {
asm_thumb_op16(as, 0x4600 | op_lo);
}
#define OP_MOVW (0xf240)
#define OP_MOVT (0xf2c0)
// if loading lo half with movw, the i16 value will be zero extended into the r32 register!
STATIC void asm_thumb_mov_reg_i16(asm_thumb_t *as, uint mov_op, uint reg_dest, int i16_src) {
void asm_thumb_mov_reg_i16(asm_thumb_t *as, uint mov_op, uint reg_dest, int i16_src) {
assert(reg_dest < ASM_THUMB_REG_R15);
// mov[wt] reg_dest, #i16_src
asm_thumb_op32(as, mov_op | ((i16_src >> 1) & 0x0400) | ((i16_src >> 12) & 0xf), ((i16_src << 4) & 0x7000) | (reg_dest << 8) | (i16_src & 0xff));
}
// the i16_src value will be zero extended into the r32 register!
void asm_thumb_movw_reg_i16(asm_thumb_t *as, uint reg_dest, int i16_src) {
asm_thumb_mov_reg_i16(as, OP_MOVW, reg_dest, i16_src);
}
// the i16_src value will be zero extended into the r32 register!
void asm_thumb_movt_reg_i16(asm_thumb_t *as, uint reg_dest, int i16_src) {
asm_thumb_mov_reg_i16(as, OP_MOVT, reg_dest, i16_src);
}
#define OP_B_N(byte_offset) (0xe000 | (((byte_offset) >> 1) & 0x07ff))
void asm_thumb_b_n(asm_thumb_t *as, uint label) {
@@ -355,15 +321,15 @@ void asm_thumb_mov_reg_i32(asm_thumb_t *as, uint reg_dest, mp_uint_t i32) {
// movw, movt does it in 8 bytes
// ldr [pc, #], dw does it in 6 bytes, but we might not reach to end of code for dw
asm_thumb_mov_reg_i16(as, OP_MOVW, reg_dest, i32);
asm_thumb_mov_reg_i16(as, OP_MOVT, reg_dest, i32 >> 16);
asm_thumb_mov_reg_i16(as, ASM_THUMB_OP_MOVW, reg_dest, i32);
asm_thumb_mov_reg_i16(as, ASM_THUMB_OP_MOVT, reg_dest, i32 >> 16);
}
void asm_thumb_mov_reg_i32_optimised(asm_thumb_t *as, uint reg_dest, int i32) {
if (reg_dest < 8 && UNSIGNED_FIT8(i32)) {
asm_thumb_mov_rlo_i8(as, reg_dest, i32);
} else if (UNSIGNED_FIT16(i32)) {
asm_thumb_mov_reg_i16(as, OP_MOVW, reg_dest, i32);
asm_thumb_mov_reg_i16(as, ASM_THUMB_OP_MOVW, reg_dest, i32);
} else {
asm_thumb_mov_reg_i32(as, reg_dest, i32);
}
@@ -485,7 +451,7 @@ void asm_thumb_bl_ind(asm_thumb_t *as, void *fun_ptr, uint fun_id, uint reg_temp
if (fun_id < 32) {
// load ptr to function from table, indexed by fun_id (must be in range 0-31); 4 bytes
asm_thumb_op16(as, OP_FORMAT_9_10(ASM_THUMB_FORMAT_9_LDR | ASM_THUMB_FORMAT_9_WORD_TRANSFER, reg_temp, ASM_THUMB_REG_R7, fun_id));
asm_thumb_op16(as, ASM_THUMB_FORMAT_9_10_ENCODE(ASM_THUMB_FORMAT_9_LDR | ASM_THUMB_FORMAT_9_WORD_TRANSFER, reg_temp, ASM_THUMB_REG_R7, fun_id));
asm_thumb_op16(as, OP_BLX(reg_temp));
} else {
// load ptr to function into register using immediate; 6 bytes