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LiBr
2026-02-26 16:59:30 +08:00
commit 3339111ff2
31 changed files with 4635 additions and 0 deletions
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66
script/patches/ffi.inc.c.diff Normal file
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@@ -0,0 +1,66 @@
diff --git a/qemu/tcg/ffi.inc.c b/qemu/tcg/ffi.inc.c
index f0300a76..68ea4ebc 100644
--- a/qemu/tcg/ffi.inc.c
+++ b/qemu/tcg/ffi.inc.c
@@ -19,6 +19,7 @@ static int debug_info(TCGHelperInfo *info) {
printf("sizemask: 0x%x\n", info->sizemask);
printf("n_args: %d\n", info->n_args);
printf("t0: %lu\n", (uintptr_t)info->func);
+ return 0;
}
static uint64_t do_op_call(tcg_target_ulong *regs, tcg_target_ulong t0) {
@@ -32,20 +33,50 @@ static uint64_t do_op_call(tcg_target_ulong *regs, tcg_target_ulong t0) {
// Manual ABI interventions (wasm32 requires very specific conventions for uint64_t)
#if TCG_TARGET_REG_BITS == 32
- if (info->flags & dh_callflag_void && info->sizemask == 0x10 && info->n_args == 4) {
- ((void (*)(uint32_t, uint64_t, uint32_t, uint32_t))t0)(tci_read_reg(regs, TCG_REG_R0), tci_read_reg_ext(regs, TCG_REG_R1), tci_read_reg(regs, TCG_REG_R3), tci_read_reg(regs, TCG_REG_R4));
+ if (info->name && strcmp(info->name, "uc_tracecode") == 0) {
+ uint64_t trace_addr = tci_read_reg_ext(regs, TCG_REG_R3);
+ // printf("ffi wasm32 fastpath: uc_tracecode r0=%u r1=%u r2=%lu addr=0x%llx\n",
+ // (unsigned)tci_read_reg(regs, TCG_REG_R0),
+ // (unsigned)tci_read_reg(regs, TCG_REG_R1),
+ // (unsigned long)tci_read_reg(regs, TCG_REG_R2),
+ // (unsigned long long)trace_addr);
+ ((void (*)(uint32_t, uint32_t, uintptr_t, uint64_t))t0)(
+ tci_read_reg(regs, TCG_REG_R0),
+ tci_read_reg(regs, TCG_REG_R1),
+ (uintptr_t)tci_read_reg(regs, TCG_REG_R2),
+ trace_addr
+ );
+ return 0;
+ }
+
+ if (info->flags & dh_callflag_void && info->sizemask == 0x10 && info->n_args == 4) {
+ ((void (*)(uint32_t, uint32_t, uint64_t, uint32_t))t0)(
+ tci_read_reg(regs, TCG_REG_R0),
+ tci_read_reg(regs, TCG_REG_R1),
+ tci_read_reg_ext(regs, TCG_REG_R2),
+ tci_read_reg(regs, TCG_REG_R4)
+ );
return 0;
} else if (info->sizemask == 0x255 && info->n_args == 4) {
return ((uint64_t (*)(uint64_t, uint64_t, uint64_t, uint32_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0), tci_read_reg_ext(regs, TCG_REG_R2), tci_read_reg_ext(regs, TCG_REG_R4), tci_read_reg(regs, TCG_REG_R7));
} else if (info->sizemask == 4 && info->n_args == 3) {
return ((uint32_t (*)(uint64_t, uint32_t, uint32_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0), tci_read_reg(regs, TCG_REG_R2), tci_read_reg(regs, TCG_REG_R3));
} else if ((info->sizemask == 0x15 || info->sizemask == 0x3f) && info->n_args == 2) {
- return ((uint64_t (*)(uint64_t, uint64_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0), tci_read_reg(regs, TCG_REG_R2));
+ return ((uint64_t (*)(uint64_t, uint64_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0), tci_read_reg_ext(regs, TCG_REG_R2));
} else if (info->sizemask == 0x40 && info->n_args == 3) {
((void (*)(uintptr_t, uintptr_t, uint64_t))t0)(tci_read_reg(regs, TCG_REG_R0), tci_read_reg(regs, TCG_REG_R1), tci_read_reg_ext(regs, TCG_REG_R2));
return 0;
} else if (info->sizemask == 0x15 && info->n_args == 3) {
return ((uint64_t (*)(uint64_t, uint64_t, uint32_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0), tci_read_reg_ext(regs, TCG_REG_R2), tci_read_reg(regs, TCG_REG_R4));
+ } else if (info->sizemask == 0x4 && info->n_args == 1) {
+ // helper with arg shape (i64) -> i32, e.g., neon_narrow_u16, neon_narrow_high_u8, iwmmxt_setpsr_nz
+ return ((uint32_t (*)(uint64_t))t0)(tci_read_reg_ext(regs, TCG_REG_R0));
+ } else if (info->sizemask == 0x4 && info->n_args == 2) {
+ // helper with arg shape (env, i64) -> i32, e.g., neon_narrow_sat_u8 (env is ptr)
+ return ((uint32_t (*)(uintptr_t, uint64_t))t0)(
+ tci_read_reg(regs, TCG_REG_R0),
+ tci_read_reg_ext(regs, TCG_REG_R1)
+ );
}
for (int i = 1; i < 15; i++) {