diff options
Diffstat (limited to 'meta/recipes-devtools/elfutils/files/debian/0002-Add-support-for-mips64-abis-in-mips_retval.c.patch')
| -rw-r--r-- | meta/recipes-devtools/elfutils/files/debian/0002-Add-support-for-mips64-abis-in-mips_retval.c.patch | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/meta/recipes-devtools/elfutils/files/debian/0002-Add-support-for-mips64-abis-in-mips_retval.c.patch b/meta/recipes-devtools/elfutils/files/debian/0002-Add-support-for-mips64-abis-in-mips_retval.c.patch deleted file mode 100644 index b17498f5fa..0000000000 --- a/meta/recipes-devtools/elfutils/files/debian/0002-Add-support-for-mips64-abis-in-mips_retval.c.patch +++ /dev/null @@ -1,171 +0,0 @@ -From fdaab18a65ed2529656baa64cb6169f34d7e507b Mon Sep 17 00:00:00 2001 -From: James Cowgill <james410@cowgill.org.uk> -Date: Mon, 5 Jan 2015 15:17:01 +0000 -Subject: [PATCH 2/3] Add support for mips64 abis in mips_retval.c - -Signed-off-by: James Cowgill <james410@cowgill.org.uk> - -Upstream-Status: Backport [from debian] -Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> ---- - backends/mips_retval.c | 104 ++++++++++++++++++++++++++++++++++++++++++++----- - 1 file changed, 94 insertions(+), 10 deletions(-) - -diff --git a/backends/mips_retval.c b/backends/mips_retval.c -index 33f12a7..d5c6ef0 100644 ---- a/backends/mips_retval.c -+++ b/backends/mips_retval.c -@@ -91,6 +91,8 @@ enum mips_abi find_mips_abi(Elf *elf) - default: - if ((elf_flags & EF_MIPS_ABI2)) - return MIPS_ABI_N32; -+ else if ((ehdr->e_ident[EI_CLASS] == ELFCLASS64)) -+ return MIPS_ABI_N64; - } - - /* GCC creates a pseudo-section whose name describes the ABI. */ -@@ -195,6 +197,57 @@ static const Dwarf_Op loc_aggregate[] = - }; - #define nloc_aggregate 1 - -+/* Test if a struct member is a float */ -+static int is_float_child(Dwarf_Die *childdie) -+{ -+ /* Test if this is actually a struct member */ -+ if (dwarf_tag(childdie) != DW_TAG_member) -+ return 0; -+ -+ /* Get type of member */ -+ Dwarf_Attribute attr_mem; -+ Dwarf_Die child_type_mem; -+ Dwarf_Die *child_typedie = -+ dwarf_formref_die(dwarf_attr_integrate(childdie, -+ DW_AT_type, -+ &attr_mem), &child_type_mem); -+ -+ if (dwarf_tag(child_typedie) != DW_TAG_base_type) -+ return 0; -+ -+ /* Get base subtype */ -+ Dwarf_Word encoding; -+ if (dwarf_formudata (dwarf_attr_integrate (child_typedie, -+ DW_AT_encoding, -+ &attr_mem), &encoding) != 0) -+ return 0; -+ -+ return encoding == DW_ATE_float; -+} -+ -+/* Returns the number of fpregs which can be returned in the given struct */ -+static int get_struct_fpregs(Dwarf_Die *structtypedie) -+{ -+ Dwarf_Die child_mem; -+ int fpregs = 0; -+ -+ /* Get first structure member */ -+ if (dwarf_child(structtypedie, &child_mem) != 0) -+ return 0; -+ -+ do -+ { -+ /* Ensure this register is a float */ -+ if (!is_float_child(&child_mem)) -+ return 0; -+ -+ fpregs++; -+ } -+ while (dwarf_siblingof (&child_mem, &child_mem) == 0); -+ -+ return fpregs; -+} -+ - int - mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) - { -@@ -240,6 +293,7 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) - tag = dwarf_tag (typedie); - } - -+ Dwarf_Word size; - switch (tag) - { - case -1: -@@ -258,8 +312,6 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) - case DW_TAG_enumeration_type: - case DW_TAG_pointer_type: - case DW_TAG_ptr_to_member_type: -- { -- Dwarf_Word size; - if (dwarf_formudata (dwarf_attr_integrate (typedie, DW_AT_byte_size, - &attr_mem), &size) != 0) - { -@@ -289,7 +341,7 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) - if (size <= 4*regsize && abi == MIPS_ABI_O32) - return nloc_fpregquad; - -- goto aggregate; -+ goto large; - } - } - *locp = ABI_LOC(loc_intreg, regsize); -@@ -298,18 +350,50 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) - if (size <= 2*regsize) - return nloc_intregpair; - -- /* Else fall through. Shouldn't happen though (at least with gcc) */ -- } -+ /* Else pass in memory. Shouldn't happen though (at least with gcc) */ -+ goto large; - - case DW_TAG_structure_type: - case DW_TAG_class_type: - case DW_TAG_union_type: -- case DW_TAG_array_type: -- aggregate: -- /* XXX TODO: Can't handle structure return with other ABI's yet :-/ */ -- if ((abi != MIPS_ABI_O32) && (abi != MIPS_ABI_O64)) -- return -2; -+ /* Handle special cases for structures <= 128 bytes in newer ABIs */ -+ if (abi == MIPS_ABI_EABI32 || abi == MIPS_ABI_EABI64 || -+ abi == MIPS_ABI_N32 || abi == MIPS_ABI_N64) -+ { -+ if (dwarf_aggregate_size (typedie, &size) == 0 && size <= 16) -+ { -+ /* -+ * Special case in N64 / N32 - -+ * structures containing only floats are returned in fp regs. -+ * Everything else is returned in integer regs. -+ */ -+ if (tag != DW_TAG_union_type && -+ (abi == MIPS_ABI_N32 || abi == MIPS_ABI_N64)) -+ { -+ int num_fpregs = get_struct_fpregs(typedie); -+ if (num_fpregs == 1 || num_fpregs == 2) -+ { -+ *locp = loc_fpreg; -+ if (num_fpregs == 1) -+ return nloc_fpreg; -+ else -+ return nloc_fpregpair; -+ } -+ } -+ -+ *locp = loc_intreg; -+ if (size <= 8) -+ return nloc_intreg; -+ else -+ return nloc_intregpair; -+ } -+ } -+ -+ /* Fallthrough to handle large types */ - -+ case DW_TAG_array_type: -+ large: -+ /* Return large structures in memory */ - *locp = loc_aggregate; - return nloc_aggregate; - } --- -2.1.4 - |