ShuriZma
/
desmume
mirror of https://github.com/TASEmulators/desmume.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

JIT (ARM): Fixes a rendering bug in the SVatGLovesYou demo. 

- Special thanks to @byte4byte for the fix. His notes: "Fixed rrx shifts"
This commit is contained in:
rogerman 2022-04-27 22:58:53 -07:00
parent a72134539d
commit a276d8c29c
1 changed files with 23 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
desmume/src/utils/arm_jit/arm64_emit.cpp
View File

@ -200,6 +200,8 @@ static void emit_rrxs_reg(t_bytes *out, int reg, int nreg);
static void emit_rrx_reg(t_bytes *out, int reg, int nreg);
static void emit_ror_reg(t_bytes *out, int reg, int nreg);
static void emit_andimm(t_bytes *out,int rs,int imm,int rt);
static void emit_lsr_reg(t_bytes *out, int reg, int nreg);
static void emit_testimm(t_bytes *out, int rs,int imm);
@ -208,6 +210,9 @@ static void emit_movimm(t_bytes *out, uintptr_t imm,u_int rt);
static void emit_movimm2pad(t_bytes *out, u_int imm,u_int rt);
static void emit_addnop(t_bytes *out, u_int r);
static void emit_setc(t_bytes *out, int reg);
static void emit_or(t_bytes *out, u_int rs1,u_int rs2,u_int rt);
static void output_w32(t_bytes *bytes, unsigned int word);
static void output_w32_full(t_bytes *bytes, unsigned int word, int type, int label_id, int cond);
@ -295,9 +300,14 @@ static void emit_ror(t_bytes *out, int reg, int n) {
}
}
static void emit_rrx(t_bytes *out, int reg, int n) {
emit_setc(out, 13);
output_w32(out, 0x530101AD); // lsl w13, w13, #31
emit_andimm(out, reg, 1, 5);
emit_movimm(out, n, SHIFT_REG);
emit_ror_reg(out, reg, SHIFT_REG);
emit_ror_reg(out, reg, SHIFT_REG);
emit_andimm(out, reg, 0x7fffffff, reg);
emit_or(out, reg, 13, reg);
}
static void emit_lsl_reg(t_bytes *out, int reg, int nreg) {
int setb=genlabel();
@ -372,8 +382,19 @@ static void emit_rors(t_bytes *out, int reg, int n) {
emit_rors_reg(out, reg, SHIFT_REG);
}
static void emit_rrxs(t_bytes *out, int reg, int n) {
emit_setc(out, 13);
output_w32(out, 0x530101AD); // lsl w13, w13, #31
emit_andimm(out, reg, 1, 5);
emit_movimm(out, n, SHIFT_REG);
emit_rrxs_reg(out, reg, SHIFT_REG);
emit_ror_reg(out, reg, SHIFT_REG);
emit_andimm(out, reg, 0x7fffffff, reg);
emit_or(out, reg, 13, reg);
//emit_mov(out, 14, 5);
//emit_movimm(out, n, SHIFT_REG);
//emit_rrxs_reg(out, reg, SHIFT_REG);
}
static void emit_lsls_reg(t_bytes *out, int reg, int nreg) {