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various small fixes and optimsations

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This commit is contained in:
kub 2019-08-16 15:14:41 +02:00
parent b90e104fc9
commit 8284ab7107
9 changed files with 39 additions and 27 deletions
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16
cpu/sh2/compiler.c
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@ -419,8 +419,8 @@ typedef struct {
static int rcache_get_tmp(void);
static void rcache_free_tmp(int hr);
// Note: cache_regs[] must have at least the amount of REG and TEMP registers
// used by handlers in worst case (currently 4).
// Note: cache_regs[] must have at least the amount of HRF_REG registers used
// by handlers in worst case (currently 4).
// Register assignment goes by ABI convention. Caller save registers are TEMP,
// the others are either static or REG. SR must be static, R0 very recommended.
// VBR, PC, PR must not be static (read from context in utils).
@ -2418,7 +2418,7 @@ static void rcache_init(void)
// NB may return either REG or TEMP
static int emit_get_rbase_and_offs(SH2 *sh2, sh2_reg_e r, int rmode, u32 *offs)
{
uptr omask = 0xff; // offset mask, XXX: ARM oriented..
uptr omask = emith_rw_offs_max(); // offset mask
u32 mask = 0;
u32 a;
int poffs;
@ -4447,7 +4447,7 @@ end_op:
static void sh2_generate_utils(void)
{
int arg0, arg1, arg2, arg3, sr, tmp;
int arg0, arg1, arg2, arg3, sr, tmp, tmp2;
host_arg2reg(arg0, 0);
host_arg2reg(arg1, 1);
@ -4689,18 +4689,18 @@ static void sh2_generate_utils(void)
emith_sub_r_imm(tmp, 4*2);
rcache_clean();
// push SR
tmp = rcache_get_reg_arg(0, SHR_SP, NULL);
emith_add_r_imm(tmp, 4);
tmp = rcache_get_reg_arg(0, SHR_SP,&tmp2);
emith_add_r_r_imm(tmp, tmp2, 4);
tmp = rcache_get_reg_arg(1, SHR_SR, NULL);
emith_clear_msb(tmp, tmp, 22);
emith_move_r_r_ptr(arg2, CONTEXT_REG);
rcache_invalidate();
rcache_invalidate_tmp();
emith_call(p32x_sh2_write32); // XXX: use sh2_drc_write32?
// push PC
rcache_get_reg_arg(0, SHR_SP, NULL);
emith_ctx_read(arg1, SHR_PC * 4);
emith_move_r_r_ptr(arg2, CONTEXT_REG);
rcache_invalidate();
rcache_invalidate_tmp();
emith_call(p32x_sh2_write32);
// update I, cycles, do callback
emith_ctx_read(arg1, offsetof(SH2, pending_level));