tcg/loongarch64: Register the JIT

Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221054105.178795-28-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 19bfc13..9cd46c9 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -1631,3 +1631,47 @@ static void tcg_target_init(TCGContext *s)
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_TP);
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_RESERVED);
 }
+
+typedef struct {
+    DebugFrameHeader h;
+    uint8_t fde_def_cfa[4];
+    uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2];
+} DebugFrame;
+
+#define ELF_HOST_MACHINE EM_LOONGARCH
+
+static const DebugFrame debug_frame = {
+    .h.cie.len = sizeof(DebugFrameCIE) - 4, /* length after .len member */
+    .h.cie.id = -1,
+    .h.cie.version = 1,
+    .h.cie.code_align = 1,
+    .h.cie.data_align = -(TCG_TARGET_REG_BITS / 8) & 0x7f, /* sleb128 */
+    .h.cie.return_column = TCG_REG_RA,
+
+    /* Total FDE size does not include the "len" member.  */
+    .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset),
+
+    .fde_def_cfa = {
+        12, TCG_REG_SP,                 /* DW_CFA_def_cfa sp, ...  */
+        (FRAME_SIZE & 0x7f) | 0x80,     /* ... uleb128 FRAME_SIZE */
+        (FRAME_SIZE >> 7)
+    },
+    .fde_reg_ofs = {
+        0x80 + 23, 11,                  /* DW_CFA_offset, s0, -88 */
+        0x80 + 24, 10,                  /* DW_CFA_offset, s1, -80 */
+        0x80 + 25, 9,                   /* DW_CFA_offset, s2, -72 */
+        0x80 + 26, 8,                   /* DW_CFA_offset, s3, -64 */
+        0x80 + 27, 7,                   /* DW_CFA_offset, s4, -56 */
+        0x80 + 28, 6,                   /* DW_CFA_offset, s5, -48 */
+        0x80 + 29, 5,                   /* DW_CFA_offset, s6, -40 */
+        0x80 + 30, 4,                   /* DW_CFA_offset, s7, -32 */
+        0x80 + 31, 3,                   /* DW_CFA_offset, s8, -24 */
+        0x80 + 22, 2,                   /* DW_CFA_offset, s9, -16 */
+        0x80 + 1 , 1,                   /* DW_CFA_offset, ra, -8 */
+    }
+};
+
+void tcg_register_jit(const void *buf, size_t buf_size)
+{
+    tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
+}