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tcg-s390: Implement tcg_register_jit

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-03-23 21:04:40 -04:00
parent 547ec12141
commit f167dc37da
1 changed files with 55 additions and 7 deletions
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62
tcg/s390/tcg-target.c
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@ -2181,18 +2181,17 @@ static void tcg_target_init(TCGContext *s)
tcg_add_target_add_op_defs(s390_op_defs);
}
#define FRAME_SIZE ((int)(TCG_TARGET_CALL_STACK_OFFSET \
+ TCG_STATIC_CALL_ARGS_SIZE \
+ CPU_TEMP_BUF_NLONGS * sizeof(long)))
static void tcg_target_qemu_prologue(TCGContext *s)
{
tcg_target_long frame_size;
/* stmg %r6,%r15,48(%r15) (save registers) */
tcg_out_insn(s, RXY, STMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 48);
/* aghi %r15,-frame_size */
frame_size = TCG_TARGET_CALL_STACK_OFFSET;
frame_size += TCG_STATIC_CALL_ARGS_SIZE;
frame_size += CPU_TEMP_BUF_NLONGS * sizeof(long);
tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -frame_size);
tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -FRAME_SIZE);
tcg_set_frame(s, TCG_REG_CALL_STACK,
TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET,
@ -2211,8 +2210,57 @@ static void tcg_target_qemu_prologue(TCGContext *s)
/* lmg %r6,%r15,fs+48(%r15) (restore registers) */
tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15,
frame_size + 48);
FRAME_SIZE + 48);
/* br %r14 (return) */
tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14);
}
typedef struct {
DebugFrameCIE cie;
DebugFrameFDEHeader fde;
uint8_t fde_def_cfa[4];
uint8_t fde_reg_ofs[18];
} DebugFrame;
/* We're expecting a 2 byte uleb128 encoded value. */
QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14));
#define ELF_HOST_MACHINE EM_S390
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 = 8, /* sleb128 8 */
.cie.return_column = TCG_REG_R14,
/* Total FDE size does not include the "len" member. */
.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset),
.fde_def_cfa = {
12, TCG_REG_CALL_STACK, /* DW_CFA_def_cfa %r15, ... */
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
(FRAME_SIZE >> 7)
},
.fde_reg_ofs = {
0x86, 6, /* DW_CFA_offset, %r6, 48 */
0x87, 7, /* DW_CFA_offset, %r7, 56 */
0x88, 8, /* DW_CFA_offset, %r8, 64 */
0x89, 9, /* DW_CFA_offset, %r92, 72 */
0x8a, 10, /* DW_CFA_offset, %r10, 80 */
0x8b, 11, /* DW_CFA_offset, %r11, 88 */
0x8c, 12, /* DW_CFA_offset, %r12, 96 */
0x8d, 13, /* DW_CFA_offset, %r13, 104 */
0x8e, 14, /* DW_CFA_offset, %r14, 112 */
}
};
void tcg_register_jit(void *buf, size_t buf_size)
{
debug_frame.fde.func_start = (uintptr_t)buf;
debug_frame.fde.func_len = buf_size;
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
}