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tcg: Move the CIE and FDE header definitions to common code

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These will necessarily be the same layout for all hosts.  This limits
the amount of boilerplate required to implement jit debug for a host.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-06-05 07:39:57 -07:00
parent 45aba097d2
commit 497a22eb87
4 changed files with 51 additions and 76 deletions
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35
tcg/sparc/tcg-target.c
View file

@ -1646,29 +1646,12 @@ static void tcg_target_init(TCGContext *s)
# define ELF_HOST_FLAGS EF_SPARC_32PLUS
#endif
typedef struct {
uint32_t len __attribute__((aligned((sizeof(void *)))));
uint32_t id;
uint8_t version;
char augmentation[1];
uint8_t code_align;
uint8_t data_align;
uint8_t return_column;
} DebugFrameCIE;
typedef struct {
uint32_t len __attribute__((aligned((sizeof(void *)))));
uint32_t cie_offset;
tcg_target_long func_start __attribute__((packed));
tcg_target_long func_len __attribute__((packed));
uint8_t def_cfa[TCG_TARGET_REG_BITS == 64 ? 4 : 2];
uint8_t win_save;
uint8_t ret_save[3];
} DebugFrameFDE;
typedef struct {
DebugFrameCIE cie;
DebugFrameFDE fde;
DebugFrameFDEHeader fde;
uint8_t fde_def_cfa[TCG_TARGET_REG_BITS == 64 ? 4 : 2];
uint8_t fde_win_save;
uint8_t fde_ret_save[3];
} DebugFrame;
static DebugFrame debug_frame = {
@ -1679,8 +1662,10 @@ static DebugFrame debug_frame = {
.cie.data_align = -sizeof(void *) & 0x7f,
.cie.return_column = 15, /* o7 */
.fde.len = sizeof(DebugFrameFDE)-4, /* length after .len member */
.fde.def_cfa = {
/* Total FDE size does not include the "len" member. */
.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset),
.fde_def_cfa = {
#if TCG_TARGET_REG_BITS == 64
12, 30, /* DW_CFA_def_cfa i6, 2047 */
(2047 & 0x7f) | 0x80, (2047 >> 7)
@ -1688,8 +1673,8 @@ static DebugFrame debug_frame = {
13, 30 /* DW_CFA_def_cfa_register i6 */
#endif
},
.fde.win_save = 0x2d, /* DW_CFA_GNU_window_save */
.fde.ret_save = { 9, 15, 31 }, /* DW_CFA_register o7, i7 */
.fde_win_save = 0x2d, /* DW_CFA_GNU_window_save */
.fde_ret_save = { 9, 15, 31 }, /* DW_CFA_register o7, i7 */
};
void tcg_register_jit(void *buf, size_t buf_size)