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-rw-r--r--tcg/ppc64/tcg-target.c96
1 files changed, 73 insertions, 23 deletions
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 51d2b06..8f58831 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -1043,25 +1043,26 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
#endif
}
+#define FRAME_SIZE ((int) \
+ ((8 /* back chain */ \
+ + 8 /* CR */ \
+ + 8 /* LR */ \
+ + 8 /* compiler doubleword */ \
+ + 8 /* link editor doubleword */ \
+ + 8 /* TOC save area */ \
+ + TCG_STATIC_CALL_ARGS_SIZE \
+ + CPU_TEMP_BUF_NLONGS * sizeof(long) \
+ + ARRAY_SIZE(tcg_target_callee_save_regs) * 8 \
+ + 15) & ~15))
+
+#define REG_SAVE_BOT (FRAME_SIZE - ARRAY_SIZE(tcg_target_callee_save_regs) * 8)
+
static void tcg_target_qemu_prologue(TCGContext *s)
{
- int i, frame_size;
-
- frame_size = 0
- + 8 /* back chain */
- + 8 /* CR */
- + 8 /* LR */
- + 8 /* compiler doubleword */
- + 8 /* link editor doubleword */
- + 8 /* TOC save area */
- + TCG_STATIC_CALL_ARGS_SIZE
- + ARRAY_SIZE(tcg_target_callee_save_regs) * 8
- + CPU_TEMP_BUF_NLONGS * sizeof(long)
- ;
- frame_size = (frame_size + 15) & ~15;
-
- tcg_set_frame(s, TCG_REG_CALL_STACK, frame_size
- - CPU_TEMP_BUF_NLONGS * sizeof(long),
+ int i;
+
+ tcg_set_frame(s, TCG_REG_CALL_STACK,
+ REG_SAVE_BOT - CPU_TEMP_BUF_NLONGS * sizeof(long),
CPU_TEMP_BUF_NLONGS * sizeof(long));
#ifndef __APPLE__
@@ -1072,12 +1073,12 @@ static void tcg_target_qemu_prologue(TCGContext *s)
/* Prologue */
tcg_out32(s, MFSPR | RT(TCG_REG_R0) | LR);
- tcg_out32(s, STDU | SAI(TCG_REG_R1, TCG_REG_R1, -frame_size));
+ tcg_out32(s, STDU | SAI(TCG_REG_R1, TCG_REG_R1, -FRAME_SIZE));
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
tcg_out32(s, STD | SAI(tcg_target_callee_save_regs[i], 1,
- i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE));
+ REG_SAVE_BOT + i * 8));
}
- tcg_out32(s, STD | SAI(TCG_REG_R0, TCG_REG_R1, frame_size + 16));
+ tcg_out32(s, STD | SAI(TCG_REG_R0, TCG_REG_R1, FRAME_SIZE + 16));
#ifdef CONFIG_USE_GUEST_BASE
if (GUEST_BASE) {
@@ -1095,11 +1096,11 @@ static void tcg_target_qemu_prologue(TCGContext *s)
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
tcg_out32(s, LD | TAI(tcg_target_callee_save_regs[i], TCG_REG_R1,
- i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE));
+ REG_SAVE_BOT + i * 8));
}
- tcg_out32(s, LD | TAI(TCG_REG_R0, TCG_REG_R1, frame_size + 16));
+ tcg_out32(s, LD | TAI(TCG_REG_R0, TCG_REG_R1, FRAME_SIZE + 16));
tcg_out32(s, MTSPR | RS(TCG_REG_R0) | LR);
- tcg_out32(s, ADDI | TAI(TCG_REG_R1, TCG_REG_R1, frame_size));
+ tcg_out32(s, ADDI | TAI(TCG_REG_R1, TCG_REG_R1, FRAME_SIZE));
tcg_out32(s, BCLR | BO_ALWAYS);
}
@@ -2154,3 +2155,52 @@ static void tcg_target_init(TCGContext *s)
tcg_add_target_add_op_defs(ppc_op_defs);
}
+
+typedef struct {
+ DebugFrameCIE cie;
+ DebugFrameFDEHeader fde;
+ uint8_t fde_def_cfa[4];
+ uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2 + 3];
+} DebugFrame;
+
+/* We're expecting a 2 byte uleb128 encoded value. */
+QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14));
+
+#define ELF_HOST_MACHINE EM_PPC64
+
+static DebugFrame debug_frame = {
+ .cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
+ .cie.id = -1,
+ .cie.version = 1,
+ .cie.code_align = 1,
+ .cie.data_align = 0x78, /* sleb128 -8 */
+ .cie.return_column = 65,
+
+ /* Total FDE size does not include the "len" member. */
+ .fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset),
+
+ .fde_def_cfa = {
+ 12, 1, /* DW_CFA_def_cfa r1, ... */
+ (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
+ (FRAME_SIZE >> 7)
+ },
+ .fde_reg_ofs = {
+ 0x11, 65, 0x7e, /* DW_CFA_offset_extended_sf, lr, 16 */
+ }
+};
+
+void tcg_register_jit(void *buf, size_t buf_size)
+{
+ uint8_t *p = &debug_frame.fde_reg_ofs[3];
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i, p += 2) {
+ p[0] = 0x80 + tcg_target_callee_save_regs[i];
+ p[1] = (FRAME_SIZE - (REG_SAVE_BOT + i * 8)) / 8;
+ }
+
+ debug_frame.fde.func_start = (tcg_target_long) buf;
+ debug_frame.fde.func_len = buf_size;
+
+ tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
+}