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authorRichard Henderson <rth@twiddle.net>2012-03-24 10:47:39 -0700
committerBlue Swirl <blauwirbel@gmail.com>2012-03-24 19:57:58 +0000
commitcb1977d308f6e1d6bf398d42e6148187b82456c1 (patch)
treed00b699a9f039d71c35d766c17953d8386545862
parente7bd63006412cb21bf2616f464955cf875a0f627 (diff)
downloadqemu-arm-cb1977d308f6e1d6bf398d42e6148187b82456c1.tar.gz
tcg-sparc: Add debug_frame support.
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
-rw-r--r--elf.h15
-rw-r--r--tcg/sparc/tcg-target.c63
2 files changed, 78 insertions, 0 deletions
diff --git a/elf.h b/elf.h
index 310e05a8e1..36bcac4c11 100644
--- a/elf.h
+++ b/elf.h
@@ -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
*/
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 491c9797d3..247a27814a 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -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));
+}