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tcg-sparc: Add debug_frame support.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2012-03-24 10:47:39 -07:00 committed by Blue Swirl
parent e7bd630064
commit cb1977d308
2 changed files with 78 additions and 0 deletions
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15
elf.h
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@ -346,6 +346,21 @@ typedef struct {
#define R_MIPS_HIVENDOR 127
/* SUN SPARC specific definitions. */
/* Values for Elf64_Ehdr.e_flags. */
#define EF_SPARCV9_MM 3
#define EF_SPARCV9_TSO 0
#define EF_SPARCV9_PSO 1
#define EF_SPARCV9_RMO 2
#define EF_SPARC_LEDATA 0x800000 /* little endian data */
#define EF_SPARC_EXT_MASK 0xFFFF00
#define EF_SPARC_32PLUS 0x000100 /* generic V8+ features */
#define EF_SPARC_SUN_US1 0x000200 /* Sun UltraSPARC1 extensions */
#define EF_SPARC_HAL_R1 0x000400 /* HAL R1 extensions */
#define EF_SPARC_SUN_US3 0x000800 /* Sun UltraSPARCIII extensions */
/*
* Sparc ELF relocation types
*/

63
tcg/sparc/tcg-target.c
View File

@ -1624,3 +1624,66 @@ static void tcg_target_init(TCGContext *s)
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O7);
tcg_add_target_add_op_defs(sparc_op_defs);
}
#if TCG_TARGET_REG_BITS == 64
# define ELF_HOST_MACHINE EM_SPARCV9
#elif defined(__sparc_v8plus__)
# define ELF_HOST_MACHINE EM_SPARC32PLUS
# define ELF_HOST_FLAGS EF_SPARC_32PLUS
#else
# define ELF_HOST_MACHINE EM_SPARC
#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;
} DebugFrame;
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 = -sizeof(void *) & 0x7f,
.cie.return_column = 15, /* o7 */
.fde.len = sizeof(DebugFrameFDE)-4, /* length after .len member */
.fde.def_cfa = {
#if TCG_TARGET_REG_BITS == 64
12, 30, /* DW_CFA_def_cfa i6, 2047 */
(2047 & 0x7f) | 0x80, (2047 >> 7)
#else
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 */
};
void tcg_register_jit(void *buf, size_t buf_size)
{
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));
}