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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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39
tcg/i386/tcg-target.c
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@ -2311,28 +2311,11 @@ static void tcg_target_init(TCGContext *s)
tcg_add_target_add_op_defs(x86_op_defs);
}
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[4];
uint8_t reg_ofs[14];
} DebugFrameFDE;
typedef struct {
DebugFrameCIE cie;
DebugFrameFDE fde;
DebugFrameFDEHeader fde;
uint8_t fde_def_cfa[4];
uint8_t fde_reg_ofs[14];
} DebugFrame;
#if !defined(__ELF__)
@ -2347,13 +2330,15 @@ static DebugFrame debug_frame = {
.cie.data_align = 0x78, /* sleb128 -8 */
.cie.return_column = 16,
.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 = {
12, 7, /* DW_CFA_def_cfa %rsp, ... */
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
(FRAME_SIZE >> 7)
},
.fde.reg_ofs = {
.fde_reg_ofs = {
0x90, 1, /* DW_CFA_offset, %rip, -8 */
/* The following ordering must match tcg_target_callee_save_regs. */
0x86, 2, /* DW_CFA_offset, %rbp, -16 */
@ -2374,13 +2359,15 @@ static DebugFrame debug_frame = {
.cie.data_align = 0x7c, /* sleb128 -4 */
.cie.return_column = 8,
.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 = {
12, 4, /* DW_CFA_def_cfa %esp, ... */
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
(FRAME_SIZE >> 7)
},
.fde.reg_ofs = {
.fde_reg_ofs = {
0x88, 1, /* DW_CFA_offset, %eip, -4 */
/* The following ordering must match tcg_target_callee_save_regs. */
0x85, 2, /* DW_CFA_offset, %ebp, -8 */