From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55379) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVA4X-0007qn-AZ for qemu-devel@nongnu.org; Sun, 14 Feb 2016 22:43:38 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aVA4W-0006JY-DW for qemu-devel@nongnu.org; Sun, 14 Feb 2016 22:43:37 -0500 Received: from mail-qg0-x244.google.com ([2607:f8b0:400d:c04::244]:35406) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVA4W-0006JN-97 for qemu-devel@nongnu.org; Sun, 14 Feb 2016 22:43:36 -0500 Received: by mail-qg0-x244.google.com with SMTP id b35so9797117qge.2 for ; Sun, 14 Feb 2016 19:43:36 -0800 (PST) Sender: Richard Henderson From: Richard Henderson Date: Mon, 15 Feb 2016 14:42:27 +1100 Message-Id: <1455507754-8978-10-git-send-email-rth@twiddle.net> In-Reply-To: <1455507754-8978-1-git-send-email-rth@twiddle.net> References: <1455507754-8978-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PATCH v2 09/16] tcg-mips: Add tcg unwind info List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: mark.cave-ayland@ilande.co.uk, aurelien@aurel32.net Signed-off-by: Richard Henderson --- tcg/mips/tcg-target.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c index 4a3f11a..25b079b 100644 --- a/tcg/mips/tcg-target.c +++ b/tcg/mips/tcg-target.c @@ -2420,3 +2420,47 @@ void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr) *ptr = deposit32(*ptr, 0, 26, addr >> 2); flush_icache_range(jmp_addr, jmp_addr + 4); } + +typedef struct { + DebugFrameHeader h; + uint8_t fde_def_cfa[4]; + uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2]; +} DebugFrame; + +#define ELF_HOST_MACHINE EM_MIPS +/* GDB doesn't appear to require proper setting of ELF_HOST_FLAGS, + which is good because they're really quite complicated for MIPS. */ + +static const DebugFrame debug_frame = { + .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ + .h.cie.id = -1, + .h.cie.version = 1, + .h.cie.code_align = 1, + .h.cie.data_align = -(TCG_TARGET_REG_BITS / 8) & 0x7f, /* sleb128 */ + .h.cie.return_column = TCG_REG_RA, + + /* Total FDE size does not include the "len" member. */ + .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), + + .fde_def_cfa = { + 12, TCG_REG_SP, /* DW_CFA_def_cfa sp, ... */ + (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ + (FRAME_SIZE >> 7) + }, + .fde_reg_ofs = { + 0x80 + 16, 9, /* DW_CFA_offset, s0, -72 */ + 0x80 + 17, 8, /* DW_CFA_offset, s2, -64 */ + 0x80 + 18, 7, /* DW_CFA_offset, s3, -56 */ + 0x80 + 19, 6, /* DW_CFA_offset, s4, -48 */ + 0x80 + 20, 5, /* DW_CFA_offset, s5, -40 */ + 0x80 + 21, 4, /* DW_CFA_offset, s6, -32 */ + 0x80 + 22, 3, /* DW_CFA_offset, s7, -24 */ + 0x80 + 30, 2, /* DW_CFA_offset, s8, -16 */ + 0x80 + 31, 1, /* DW_CFA_offset, ra, -8 */ + } +}; + +void tcg_register_jit(void *buf, size_t buf_size) +{ + tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); +} -- 2.5.0