#include "pcnt.h"
#include "arm_features.h"
-#define unused __attribute__((unused))
-
void do_memhandler_pre();
void do_memhandler_post();
/* Linker */
static void set_jump_target(void *addr, void *target)
{
- u_int *ptr = addr;
+ u_int *ptr = NDRC_WRITE_OFFSET(addr);
intptr_t offset = (u_char *)target - (u_char *)addr;
if ((*ptr&0xFC000000) == 0x14000000) { // b
// should only happen when jumping to an already compiled block (see add_jump_out)
// a workaround would be to do a trampoline jump via a stub at the end of the block
assert(-1048576 <= offset && offset < 1048576);
- *ptr=(*ptr&0xFF00000F)|(((offset>>2)&0x7ffff)<<5);
+ *ptr=(*ptr&0xFF00001F)|(((offset>>2)&0x7ffff)<<5);
}
else if((*ptr&0x9f000000)==0x10000000) { // adr
// generated by do_miniht_insert
return ptr + offset / 4;
}
+#if 0
// find where external branch is liked to using addr of it's stub:
// get address that the stub loads (dyna_linker arg1),
// treat it as a pointer to branch insn,
assert(0);
return NULL;
}
+#endif
// Allocate a specific ARM register.
static void alloc_arm_reg(struct regstat *cur,int i,signed char reg,int hr)
static void output_w32(u_int word)
{
- *((u_int *)out) = word;
+ *((u_int *)NDRC_WRITE_OFFSET(out)) = word;
out += 4;
}
-static void output_w64(uint64_t dword)
-{
- *((uint64_t *)out) = dword;
- out+=8;
-}
-
-/*
-static u_int rm_rd(u_int rm, u_int rd)
-{
- assert(rm < 31);
- assert(rd < 31);
- return (rm << 16) | rd;
-}
-*/
-
static u_int rn_rd(u_int rn, u_int rd)
{
assert(rn < 31);
}
}
+static void emit_movimm64(uint64_t imm, u_int rt)
+{
+ u_int shift, op, imm16, insns = 0;
+ for (shift = 0; shift < 4; shift++) {
+ imm16 = (imm >> shift * 16) & 0xffff;
+ if (!imm16)
+ continue;
+ op = insns ? 0xf2800000 : 0xd2800000;
+ assem_debug("mov%c %s,#%#x", insns ? 'k' : 'z', regname64[rt], imm16);
+ if (shift)
+ assem_debug(",lsl #%u", shift * 16);
+ assem_debug("\n");
+ output_w32(op | (shift << 21) | imm16_rd(imm16, rt));
+ insns++;
+ }
+ if (!insns) {
+ assem_debug("movz %s,#0\n", regname64[rt]);
+ output_w32(0xd2800000 | imm16_rd(0, rt));
+ }
+}
+
static void emit_readword(void *addr, u_int rt)
{
uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local;
static void emit_loadreg(u_int r, u_int hr)
{
int is64 = 0;
- assert(r < 64);
if (r == 0)
emit_zeroreg(hr);
else {
static void emit_addimm(u_int rs, uintptr_t imm, u_int rt)
{
+ if (imm == 0) {
+ emit_mov(rs, rt);
+ return;
+ }
emit_addimm_s(0, 0, rs, imm, rt);
}
output_w32(0x6b000000 | rm_rn_rd(rt, rs, WZR));
}
+static void emit_cmpcs(u_int rs,u_int rt)
+{
+ assem_debug("ccmp %s,%s,#0,cs\n",regname[rs],regname[rt]);
+ output_w32(0x7a400000 | (COND_CS << 12) | rm_rn_rd(rt, rs, 0));
+}
+
static void emit_set_gz32(u_int rs, u_int rt)
{
//assem_debug("set_gz32\n");
output_w32(0x34000000 | is64 | isnz | imm19_rt(offset, r));
}
-static void emit_cbz(const void *a, u_int r)
+static void *emit_cbz(u_int r, const void *a)
{
+ void *ret = out;
emit_cb(0, 0, a, r);
+ return ret;
}
static void emit_jmpreg(u_int r)
}
// special case for checking invalid_code
-static void emit_cmpmem_indexedsr12_reg(u_int rbase, u_int r, u_int imm)
+static void emit_ldrb_indexedsr12_reg(u_int rbase, u_int r, u_int rt)
{
- host_tempreg_acquire();
- emit_shrimm(r, 12, HOST_TEMPREG);
- assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[HOST_TEMPREG],regname64[rbase],regname[HOST_TEMPREG]);
- output_w32(0x38604800 | rm_rn_rd(HOST_TEMPREG, rbase, HOST_TEMPREG));
- emit_cmpimm(HOST_TEMPREG, imm);
- host_tempreg_release();
+ emit_shrimm(r, 12, rt);
+ assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[rt],regname64[rbase],regname[rt]);
+ output_w32(0x38604800 | rm_rn_rd(rt, rbase, rt));
}
// special for loadlr_assemble, rs2 is destroyed
emit_bic(rs1, rs2, rt);
}
-static void emit_loadlp_ofs(u_int ofs, u_int rt)
-{
- output_w32(0x58000000 | imm19_rt(ofs, rt));
-}
-
static void emit_ldst(int is_st, int is64, u_int rt, u_int rn, u_int ofs)
{
u_int op = 0xb9000000;
}
// parsed by get_pointer, find_extjump_insn
-static void emit_extjump2(u_char *addr, u_int target, void *linker)
+static void emit_extjump(u_char *addr, u_int target)
{
assert(((addr[3]&0xfc)==0x14) || ((addr[3]&0xff)==0x54)); // b or b.cond
// addr is in the current recompiled block (max 256k)
// offset shouldn't exceed +/-1MB
emit_adr(addr, 1);
- emit_far_jump(linker);
+ emit_far_jump(dyna_linker);
}
static void check_extjump2(void *src)
}
// just move the whole thing. At least on Linux all addresses
// seem to be 48bit, so 3 insns - not great not terrible
- assem_debug("movz %s,#%#lx\n", regname64[rt], rt_val & 0xffff);
- output_w32(0xd2800000 | imm16_rd(rt_val & 0xffff, rt));
- assem_debug("movk %s,#%#lx,lsl #16\n", regname64[rt], (rt_val >> 16) & 0xffff);
- output_w32(0xf2a00000 | imm16_rd((rt_val >> 16) & 0xffff, rt));
- assem_debug("movk %s,#%#lx,lsl #32\n", regname64[rt], (rt_val >> 32) & 0xffff);
- output_w32(0xf2c00000 | imm16_rd((rt_val >> 32) & 0xffff, rt));
- if (rt_val >> 48) {
- assem_debug("movk %s,#%#lx,lsl #48\n", regname64[rt], (rt_val >> 48) & 0xffff);
- output_w32(0xf2e00000 | imm16_rd((rt_val >> 48) & 0xffff, rt));
- }
+ emit_movimm64(rt_val, rt);
}
// trashes x2
emit_addimm(cc<0?2:cc,adj,2);
if(is_dynamic) {
uintptr_t l1 = ((uintptr_t *)mem_rtab)[addr>>12] << 1;
- emit_adrp((void *)l1, 1);
- emit_addimm64(1, l1 & 0xfff, 1);
+ intptr_t offset = (l1 & ~0xfffl) - ((intptr_t)out & ~0xfffl);
+ if (-4294967296l <= offset && offset < 4294967296l) {
+ emit_adrp((void *)l1, 1);
+ emit_addimm64(1, l1 & 0xfff, 1);
+ }
+ else
+ emit_movimm64(l1, 1);
}
else
emit_far_call(do_memhandler_pre);
restore_regs(reglist);
}
-static int verify_code_arm64(const void *source, const void *copy, u_int size)
-{
- int ret = memcmp(source, copy, size);
- //printf("%s %p,%#x = %d\n", __func__, source, size, ret);
- return ret;
-}
-
-// this output is parsed by verify_dirty, get_bounds, isclean, get_clean_addr
-static void do_dirty_stub_base(u_int vaddr, u_int source_len)
-{
- assert(source_len <= MAXBLOCK*4);
- emit_loadlp_ofs(0, 0); // ldr x1, source
- emit_loadlp_ofs(0, 1); // ldr x2, copy
- emit_movz(source_len, 2);
- emit_far_call(verify_code_arm64);
- void *jmp = out;
- emit_cbz(0, 0);
- emit_movz(vaddr & 0xffff, 0);
- emit_movk_lsl16(vaddr >> 16, 0);
- emit_far_call(get_addr);
- emit_jmpreg(0);
- set_jump_target(jmp, out);
-}
-
-static void assert_dirty_stub(const u_int *ptr)
-{
- assert((ptr[0] & 0xff00001f) == 0x58000000); // ldr x0, source
- assert((ptr[1] & 0xff00001f) == 0x58000001); // ldr x1, copy
- assert((ptr[2] & 0xffe0001f) == 0x52800002); // movz w2, #source_len
- assert( ptr[8] == 0xd61f0000); // br x0
-}
-
-static void set_loadlp(u_int *loadl, void *lit)
-{
- uintptr_t ofs = (u_char *)lit - (u_char *)loadl;
- assert((*loadl & ~0x1f) == 0x58000000);
- assert((ofs & 3) == 0);
- assert(ofs < 0x100000);
- *loadl |= (ofs >> 2) << 5;
-}
-
-static void do_dirty_stub_emit_literals(u_int *loadlps)
-{
- set_loadlp(&loadlps[0], out);
- output_w64((uintptr_t)source);
- set_loadlp(&loadlps[1], out);
- output_w64((uintptr_t)copy);
-}
-
-static void *do_dirty_stub(int i, u_int source_len)
-{
- assem_debug("do_dirty_stub %x\n",start+i*4);
- u_int *loadlps = (void *)out;
- do_dirty_stub_base(start + i*4, source_len);
- void *entry = out;
- load_regs_entry(i);
- if (entry == out)
- entry = instr_addr[i];
- emit_jmp(instr_addr[i]);
- do_dirty_stub_emit_literals(loadlps);
- return entry;
-}
-
-static void do_dirty_stub_ds(u_int source_len)
-{
- u_int *loadlps = (void *)out;
- do_dirty_stub_base(start + 1, source_len);
- void *lit_jumpover = out;
- emit_jmp(out + 8*2);
- do_dirty_stub_emit_literals(loadlps);
- set_jump_target(lit_jumpover, out);
-}
-
-static uint64_t get_from_ldr_literal(const u_int *i)
-{
- signed int ofs;
- assert((i[0] & 0xff000000) == 0x58000000);
- ofs = i[0] << 8;
- ofs >>= 5+8;
- return *(uint64_t *)(i + ofs);
-}
-
-static uint64_t get_from_movz(const u_int *i)
-{
- assert((i[0] & 0x7fe00000) == 0x52800000);
- return (i[0] >> 5) & 0xffff;
-}
-
-// Find the "clean" entry point from a "dirty" entry point
-// by skipping past the call to verify_code
-static void *get_clean_addr(u_int *addr)
-{
- assert_dirty_stub(addr);
- return addr + 9;
-}
-
-static int verify_dirty(const u_int *ptr)
-{
- const void *source, *copy;
- u_int len;
- assert_dirty_stub(ptr);
- source = (void *)get_from_ldr_literal(&ptr[0]); // ldr x1, source
- copy = (void *)get_from_ldr_literal(&ptr[1]); // ldr x1, copy
- len = get_from_movz(&ptr[2]); // movz w3, #source_len
- return !memcmp(source, copy, len);
-}
-
-static int isclean(void *addr)
-{
- const u_int *ptr = addr;
- if ((*ptr >> 24) == 0x58) { // the only place ldr (literal) is used
- assert_dirty_stub(ptr);
- return 0;
- }
- return 1;
-}
-
-// get source that block at addr was compiled from (host pointers)
-static void get_bounds(void *addr, u_char **start, u_char **end)
-{
- const u_int *ptr = addr;
- assert_dirty_stub(ptr);
- *start = (u_char *)get_from_ldr_literal(&ptr[0]); // ldr x1, source
- *end = *start + get_from_movz(&ptr[2]); // movz w3, #source_len
-}
-
/* Special assem */
static void c2op_prologue(u_int op, int i, const struct regstat *i_regs, u_int reglist)
{
if (rs != 0)
emit_mov(rs, 0);
- emit_far_call(get_addr_ht);
+ emit_far_call(ndrc_get_addr_ht);
emit_jmpreg(0);
}
emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]);
}
-static void clear_cache_arm64(char *start, char *end)
+static unused void clear_cache_arm64(char *start, char *end)
{
// Don't rely on GCC's __clear_cache implementation, as it caches
// icache/dcache cache line sizes, that can vary between cores on
static void arch_init(void)
{
uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops;
- struct tramp_insns *ops = ndrc->tramp.ops;
+ struct tramp_insns *ops = NDRC_WRITE_OFFSET(ndrc->tramp.ops);
size_t i;
assert(!(diff & 3));
start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops));
notaz.gp2x.de / pcsx_rearmed.git / blobdiff