From 9239bbd3a6bf901dba1c0170622c50c78f6d1096 Mon Sep 17 00:00:00 2001 From: Christophe Monat Date: Mon, 9 May 2016 15:10:37 +0200 Subject: [PATCH] [ARM/STM32L4XX] PR 20030: --fix-stm32l4xx-629360 fails to create vldm/vpop veneers for double-precision registers bfd/ PR ld/20030 * elf32-arm.c (is_thumb2_vldm): Account for T1 (DP) encoding. (stm32l4xx_need_create_replacing_stub): Rename ambiguous nb_regs to nb_words. (create_instruction_vldmia): Add is_dp to disambiguate SP/DP encoding. (create_instruction_vldmdb): Likewise. (stm32l4xx_create_replacing_stub_vldm): is_dp detects DP encoding, uses it to re-encode. ld/ PR ld/20030 * testsuite/ld-arm/arm-elf.exp: Run new stm32l4xx-fix-vldm-dp tests. Fix misnamed stm32l4xx-fix-all. * testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s: New tests for multiple loads with DP registers. * testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d: New reference file. * testsuite/ld-arm/stm32l4xx-fix-vldm.s: Add missing comment. * testsuite/ld-arm/stm32l4xx-fix-all.s: Add tests for multiple loads with DP registers. * testsuite/ld-arm/stm32l4xx-fix-all.d: Update reference. --- bfd/ChangeLog | 12 +++ bfd/elf32-arm.c | 101 +++++++++++--------- ld/ChangeLog | 13 +++ ld/testsuite/ld-arm/arm-elf.exp | 6 +- ld/testsuite/ld-arm/stm32l4xx-fix-all.d | 81 +++++++++++----- ld/testsuite/ld-arm/stm32l4xx-fix-all.s | 3 + ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d | 49 ++++++++++ ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s | 27 ++++++ ld/testsuite/ld-arm/stm32l4xx-fix-vldm.s | 1 + 9 files changed, 223 insertions(+), 70 deletions(-) create mode 100644 ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d create mode 100644 ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s diff --git a/bfd/ChangeLog b/bfd/ChangeLog index a6e440168ad..d5edec45885 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,15 @@ +2016-05-09 Christophe Monat + + PR ld/20030 + * elf32-arm.c (is_thumb2_vldm): Account for T1 (DP) encoding. + (stm32l4xx_need_create_replacing_stub): Rename ambiguous nb_regs + to nb_words. + (create_instruction_vldmia): Add is_dp to disambiguate SP/DP + encoding. + (create_instruction_vldmdb): Likewise. + (stm32l4xx_create_replacing_stub_vldm): is_dp detects DP encoding, + uses it to re-encode. + 2016-05-09 Nick Clifton PR 19938 diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index 61deb9ec817..d65837c1a03 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -7442,18 +7442,21 @@ is_thumb2_vldm (const insn32 insn) { /* A6.5 Extension register load or store instruction A7.7.229 - We look only for the 32-bit registers case since the DP (64-bit - registers) are not supported for STM32L4XX + We look for SP 32-bit and DP 64-bit registers. + Encoding T1 VLDM{mode} {!}, + is consecutive 64-bit registers + 1110 - 110P - UDW1 - rrrr - vvvv - 1011 - iiii - iiii Encoding T2 VLDM{mode} {!}, is consecutive 32-bit registers 1110 - 110P - UDW1 - rrrr - vvvv - 1010 - iiii - iiii if P==0 && U==1 && W==1 && Rn=1101 VPOP if PUW=010 || PUW=011 || PUW=101 VLDM. */ return - ((insn & 0xfe100f00) == 0xec100a00) + (((insn & 0xfe100f00) == 0xec100b00) || + ((insn & 0xfe100f00) == 0xec100a00)) && /* (IA without !). */ (((((insn << 7) >> 28) & 0xd) == 0x4) - /* (IA with !), includes VPOP (when reg number is SP). */ + /* (IA with !), includes VPOP (when reg number is SP). */ || ((((insn << 7) >> 28) & 0xd) == 0x5) /* (DB with !). */ || ((((insn << 7) >> 28) & 0xd) == 0x9)); @@ -7470,19 +7473,19 @@ static bfd_boolean stm32l4xx_need_create_replacing_stub (const insn32 insn, bfd_arm_stm32l4xx_fix stm32l4xx_fix) { - int nb_regs = 0; + int nb_words = 0; /* The field encoding the register list is the same for both LDMIA and LDMDB encodings. */ if (is_thumb2_ldmia (insn) || is_thumb2_ldmdb (insn)) - nb_regs = popcount (insn & 0x0000ffff); + nb_words = popcount (insn & 0x0000ffff); else if (is_thumb2_vldm (insn)) - nb_regs = (insn & 0xff); + nb_words = (insn & 0xff); /* DEFAULT mode accounts for the real bug condition situation, ALL mode inserts stubs for each LDM/VLDM instruction (testing). */ return - (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_DEFAULT) ? nb_regs > 8 : + (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_DEFAULT) ? nb_words > 8 : (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_ALL) ? TRUE : FALSE; } @@ -16432,30 +16435,31 @@ create_instruction_sub (int target_reg, int source_reg, int value) } static inline bfd_vma -create_instruction_vldmia (int base_reg, int wback, int num_regs, +create_instruction_vldmia (int base_reg, int is_dp, int wback, int num_words, int first_reg) { /* A8.8.332 VLDM (A8-922) - VLMD{MODE} Rn{!}, {list} (Encoding T2). */ - bfd_vma patched_inst = 0xec900a00 + VLMD{MODE} Rn{!}, {list} (Encoding T1 or T2). */ + bfd_vma patched_inst = (is_dp ? 0xec900b00 : 0xec900a00) | (/*W=*/wback << 21) | (base_reg << 16) - | (num_regs & 0x000000ff) - | (((unsigned)first_reg>>1) & 0x0000000f) << 12 + | (num_words & 0x000000ff) + | (((unsigned)first_reg >> 1) & 0x0000000f) << 12 | (first_reg & 0x00000001) << 22; return patched_inst; } static inline bfd_vma -create_instruction_vldmdb (int base_reg, int num_regs, int first_reg) +create_instruction_vldmdb (int base_reg, int is_dp, int num_words, + int first_reg) { /* A8.8.332 VLDM (A8-922) - VLMD{MODE} Rn!, {} (Encoding T2). */ - bfd_vma patched_inst = 0xed300a00 + VLMD{MODE} Rn!, {} (Encoding T1 or T2). */ + bfd_vma patched_inst = (is_dp ? 0xed300b00 : 0xed300a00) | (base_reg << 16) - | (num_regs & 0x000000ff) - | (((unsigned)first_reg>>1) & 0x0000000f) << 12 + | (num_words & 0x000000ff) + | (((unsigned)first_reg >>1 ) & 0x0000000f) << 12 | (first_reg & 0x00000001) << 22; return patched_inst; @@ -16935,15 +16939,15 @@ stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, const bfd_byte *const initial_insn_addr, bfd_byte *const base_stub_contents) { - int num_regs = ((unsigned int)initial_insn << 24) >> 24; + int num_words = ((unsigned int) initial_insn << 24) >> 24; bfd_byte *current_stub_contents = base_stub_contents; BFD_ASSERT (is_thumb2_vldm (initial_insn)); /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with - smaller than 8 registers load sequences that do not cause the + smaller than 8 words load sequences that do not cause the hardware issue. */ - if (num_regs <= 8) + if (num_words <= 8) { /* Untouched instruction. */ current_stub_contents = @@ -16958,28 +16962,30 @@ stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, } else { + bfd_boolean is_dp = /* DP encoding. */ + (initial_insn & 0xfe100f00) == 0xec100b00; bfd_boolean is_ia_nobang = /* (IA without !). */ (((initial_insn << 7) >> 28) & 0xd) == 0x4; bfd_boolean is_ia_bang = /* (IA with !) - includes VPOP. */ (((initial_insn << 7) >> 28) & 0xd) == 0x5; bfd_boolean is_db_bang = /* (DB with !). */ (((initial_insn << 7) >> 28) & 0xd) == 0x9; - int base_reg = ((unsigned int)initial_insn << 12) >> 28; + int base_reg = ((unsigned int) initial_insn << 12) >> 28; /* d = UInt (Vd:D);. */ - int first_reg = ((((unsigned int)initial_insn << 16) >> 28) << 1) + int first_reg = ((((unsigned int) initial_insn << 16) >> 28) << 1) | (((unsigned int)initial_insn << 9) >> 31); - /* Compute the number of 8-register chunks needed to split. */ - int chunks = (num_regs%8) ? (num_regs/8 + 1) : (num_regs/8); + /* Compute the number of 8-words chunks needed to split. */ + int chunks = (num_words % 8) ? (num_words / 8 + 1) : (num_words / 8); int chunk; /* The test coverage has been done assuming the following hypothesis that exactly one of the previous is_ predicates is true. */ - BFD_ASSERT ((is_ia_nobang ^ is_ia_bang ^ is_db_bang) && - !(is_ia_nobang & is_ia_bang & is_db_bang)); + BFD_ASSERT ( (is_ia_nobang ^ is_ia_bang ^ is_db_bang) + && !(is_ia_nobang & is_ia_bang & is_db_bang)); - /* We treat the cutting of the register in one pass for all + /* We treat the cutting of the words in one pass for all cases, then we emit the adjustments: vldm rx, {...} @@ -16992,29 +16998,34 @@ stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, vldmd rx!, {...} -> vldmb rx!, {8_words_or_less} for each needed 8_word. */ - for (chunk = 0; chunk + + PR ld/20030 + * testsuite/ld-arm/arm-elf.exp: Run new stm32l4xx-fix-vldm-dp + tests. Fix misnamed stm32l4xx-fix-all. + * testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s: New tests for multiple + loads with DP registers. + * testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d: New reference file. + * testsuite/ld-arm/stm32l4xx-fix-vldm.s: Add missing comment. + * testsuite/ld-arm/stm32l4xx-fix-all.s: Add tests for multiple + loads with DP registers. + * testsuite/ld-arm/stm32l4xx-fix-all.d: Update reference. + 2016-05-09 Pitchumani Sivanupandi * testsuite/ld-elf/flags1.d (readelf): Dump section header instead diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp index 0af32c09e3d..fea70a18f41 100644 --- a/ld/testsuite/ld-arm/arm-elf.exp +++ b/ld/testsuite/ld-arm/arm-elf.exp @@ -167,10 +167,14 @@ set armelftests_common_1 { "-EL --fix-stm32l4xx-629360 -Ttext=0x8000" "" "-EL -mcpu=cortex-m4 -mfpu=fpv4-sp-d16" {stm32l4xx-fix-vldm.s} {{objdump -dr stm32l4xx-fix-vldm.d}} "stm32l4xx-fix-vldm"} + {"STM32L4XX erratum fix VLDM, DP registers" + "-EL --fix-stm32l4xx-629360 -Ttext=0x8000" "" "-EL -mcpu=cortex-m4 -mfpu=fpv4-sp-d16" {stm32l4xx-fix-vldm-dp.s} + {{objdump -dr stm32l4xx-fix-vldm-dp.d}} + "stm32l4xx-fix-vldm-dp"} {"STM32L4XX erratum fix ALL" "-EL --fix-stm32l4xx-629360=all -Ttext=0x8000" "" "-EL -mcpu=cortex-m4 -mfpu=fpv4-sp-d16" {stm32l4xx-fix-all.s} {{objdump -dr stm32l4xx-fix-all.d}} - "stm32l4xx-fix-vldm-all"} + "stm32l4xx-fix-all"} {"STM32L4XX erratum fix in IT context" "-EL --fix-stm32l4xx-629360 -Ttext=0x8000" "" "-EL -mcpu=cortex-m4 -mfpu=fpv4-sp-d16" {stm32l4xx-fix-it-block.s} {{objdump -dr stm32l4xx-fix-it-block.d}} diff --git a/ld/testsuite/ld-arm/stm32l4xx-fix-all.d b/ld/testsuite/ld-arm/stm32l4xx-fix-all.d index 59f3ed1c922..c67f95d2dd1 100644 --- a/ld/testsuite/ld-arm/stm32l4xx-fix-all.d +++ b/ld/testsuite/ld-arm/stm32l4xx-fix-all.d @@ -6,37 +6,37 @@ Disassembly of section \.text: 00008000 <__stm32l4xx_veneer_0>: 8000: e899 01fe ldmia\.w r9, {r1, r2, r3, r4, r5, r6, r7, r8} - 8004: f000 b84a b\.w 809c <__stm32l4xx_veneer_0_r> + 8004: f000 b86e b\.w 80e4 <__stm32l4xx_veneer_0_r> 8008: f7f0 a000 udf\.w #0 800c: f7f0 a000 udf\.w #0 00008010 <__stm32l4xx_veneer_1>: 8010: e8b9 01fe ldmia\.w r9!, {r1, r2, r3, r4, r5, r6, r7, r8} - 8014: f000 b844 b\.w 80a0 <__stm32l4xx_veneer_1_r> + 8014: f000 b868 b\.w 80e8 <__stm32l4xx_veneer_1_r> 8018: f7f0 a000 udf\.w #0 801c: f7f0 a000 udf\.w #0 00008020 <__stm32l4xx_veneer_2>: 8020: e919 01fe ldmdb r9, {r1, r2, r3, r4, r5, r6, r7, r8} - 8024: f000 b83e b\.w 80a4 <__stm32l4xx_veneer_2_r> + 8024: f000 b862 b\.w 80ec <__stm32l4xx_veneer_2_r> 8028: f7f0 a000 udf\.w #0 802c: f7f0 a000 udf\.w #0 00008030 <__stm32l4xx_veneer_3>: 8030: e939 01fe ldmdb r9!, {r1, r2, r3, r4, r5, r6, r7, r8} - 8034: f000 b838 b\.w 80a8 <__stm32l4xx_veneer_3_r> + 8034: f000 b85c b\.w 80f0 <__stm32l4xx_veneer_3_r> 8038: f7f0 a000 udf\.w #0 803c: f7f0 a000 udf\.w #0 00008040 <__stm32l4xx_veneer_4>: 8040: e8bd 01fe ldmia\.w sp!, {r1, r2, r3, r4, r5, r6, r7, r8} - 8044: f000 b832 b\.w 80ac <__stm32l4xx_veneer_4_r> + 8044: f000 b856 b\.w 80f4 <__stm32l4xx_veneer_4_r> 8048: f7f0 a000 udf\.w #0 804c: f7f0 a000 udf\.w #0 00008050 <__stm32l4xx_veneer_5>: 8050: ecd9 0a08 vldmia r9, {s1-s8} - 8054: f000 b82c b\.w 80b0 <__stm32l4xx_veneer_5_r> + 8054: f000 b850 b\.w 80f8 <__stm32l4xx_veneer_5_r> 8058: f7f0 a000 udf\.w #0 805c: f7f0 a000 udf\.w #0 8060: f7f0 a000 udf\.w #0 @@ -44,7 +44,7 @@ Disassembly of section \.text: 00008068 <__stm32l4xx_veneer_6>: 8068: ecf6 4a08 vldmia r6!, {s9-s16} - 806c: f000 b822 b\.w 80b4 <__stm32l4xx_veneer_6_r> + 806c: f000 b846 b\.w 80fc <__stm32l4xx_veneer_6_r> 8070: f7f0 a000 udf\.w #0 8074: f7f0 a000 udf\.w #0 8078: f7f0 a000 udf\.w #0 @@ -52,32 +52,65 @@ Disassembly of section \.text: 00008080 <__stm32l4xx_veneer_7>: 8080: ecfd 0a08 vpop {s1-s8} - 8084: f000 b818 b\.w 80b8 <__stm32l4xx_veneer_7_r> + 8084: f000 b83c b\.w 8100 <__stm32l4xx_veneer_7_r> 8088: f7f0 a000 udf\.w #0 808c: f7f0 a000 udf\.w #0 8090: f7f0 a000 udf\.w #0 8094: f7f0 a000 udf\.w #0 -00008098 <_start>: - 8098: f7ff bfb2 b\.w 8000 <__stm32l4xx_veneer_0> +00008098 <__stm32l4xx_veneer_8>: + 8098: ec99 1b08 vldmia r9, {d1-d4} + 809c: f000 b832 b\.w 8104 <__stm32l4xx_veneer_8_r> + 80a0: f7f0 a000 udf\.w #0 + 80a4: f7f0 a000 udf\.w #0 + 80a8: f7f0 a000 udf\.w #0 + 80ac: f7f0 a000 udf\.w #0 -0000809c <__stm32l4xx_veneer_0_r>: - 809c: f7ff bfb8 b\.w 8010 <__stm32l4xx_veneer_1> +000080b0 <__stm32l4xx_veneer_9>: + 80b0: ecb6 8b08 vldmia r6!, {d8-d11} + 80b4: f000 b828 b\.w 8108 <__stm32l4xx_veneer_9_r> + 80b8: f7f0 a000 udf\.w #0 + 80bc: f7f0 a000 udf\.w #0 + 80c0: f7f0 a000 udf\.w #0 + 80c4: f7f0 a000 udf\.w #0 -000080a0 <__stm32l4xx_veneer_1_r>: - 80a0: f7ff bfbe b\.w 8020 <__stm32l4xx_veneer_2> +000080c8 <__stm32l4xx_veneer_a>: + 80c8: ecbd 1b08 vpop {d1-d4} + 80cc: f000 b81e b\.w 810c <__stm32l4xx_veneer_a_r> + 80d0: f7f0 a000 udf\.w #0 + 80d4: f7f0 a000 udf\.w #0 + 80d8: f7f0 a000 udf\.w #0 + 80dc: f7f0 a000 udf\.w #0 -000080a4 <__stm32l4xx_veneer_2_r>: - 80a4: f7ff bfc4 b\.w 8030 <__stm32l4xx_veneer_3> +000080e0 <_start>: + 80e0: f7ff bf8e b\.w 8000 <__stm32l4xx_veneer_0> -000080a8 <__stm32l4xx_veneer_3_r>: - 80a8: f7ff bfca b\.w 8040 <__stm32l4xx_veneer_4> +000080e4 <__stm32l4xx_veneer_0_r>: + 80e4: f7ff bf94 b\.w 8010 <__stm32l4xx_veneer_1> -000080ac <__stm32l4xx_veneer_4_r>: - 80ac: f7ff bfd0 b\.w 8050 <__stm32l4xx_veneer_5> +000080e8 <__stm32l4xx_veneer_1_r>: + 80e8: f7ff bf9a b\.w 8020 <__stm32l4xx_veneer_2> -000080b0 <__stm32l4xx_veneer_5_r>: - 80b0: f7ff bfda b\.w 8068 <__stm32l4xx_veneer_6> +000080ec <__stm32l4xx_veneer_2_r>: + 80ec: f7ff bfa0 b\.w 8030 <__stm32l4xx_veneer_3> -000080b4 <__stm32l4xx_veneer_6_r>: - 80b4: f7ff bfe4 b\.w 8080 <__stm32l4xx_veneer_7> +000080f0 <__stm32l4xx_veneer_3_r>: + 80f0: f7ff bfa6 b\.w 8040 <__stm32l4xx_veneer_4> + +000080f4 <__stm32l4xx_veneer_4_r>: + 80f4: f7ff bfac b\.w 8050 <__stm32l4xx_veneer_5> + +000080f8 <__stm32l4xx_veneer_5_r>: + 80f8: f7ff bfb6 b\.w 8068 <__stm32l4xx_veneer_6> + +000080fc <__stm32l4xx_veneer_6_r>: + 80fc: f7ff bfc0 b\.w 8080 <__stm32l4xx_veneer_7> + +00008100 <__stm32l4xx_veneer_7_r>: + 8100: f7ff bfca b\.w 8098 <__stm32l4xx_veneer_8> + +00008104 <__stm32l4xx_veneer_8_r>: + 8104: f7ff bfd4 b\.w 80b0 <__stm32l4xx_veneer_9> + +00008108 <__stm32l4xx_veneer_9_r>: + 8108: f7ff bfde b\.w 80c8 <__stm32l4xx_veneer_a> diff --git a/ld/testsuite/ld-arm/stm32l4xx-fix-all.s b/ld/testsuite/ld-arm/stm32l4xx-fix-all.s index 0c1826670ff..580e5b2e29b 100644 --- a/ld/testsuite/ld-arm/stm32l4xx-fix-all.s +++ b/ld/testsuite/ld-arm/stm32l4xx-fix-all.s @@ -20,3 +20,6 @@ _start: vldm r9, {s1-s8} vldm r6!, {s9-s16} vpop {s1-s8} + vldm r9, {d1-d4} + vldm r6!, {d8-d11} + vpop {d1-d4} diff --git a/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d new file mode 100644 index 00000000000..cd7de14b0d6 --- /dev/null +++ b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.d @@ -0,0 +1,49 @@ + +.*: file format elf32-littlearm.* + + +Disassembly of section \.text: + +00008000 <__stm32l4xx_veneer_0>: + 8000: ecba 1b08 vldmia sl!, {d1-d4} + 8004: ecba 5b08 vldmia sl!, {d5-d8} + 8008: ecba 9b08 vldmia sl!, {d9-d12} + 800c: ecba db06 vldmia sl!, {d13-d15} + 8010: f1aa 0a78 sub\.w sl, sl, #120 ; 0x78 + 8014: f000 b826 b\.w 8064 <__stm32l4xx_veneer_0_r> + +00008018 <__stm32l4xx_veneer_1>: + 8018: ecb7 5b08 vldmia r7!, {d5-d8} + 801c: ecb7 9b08 vldmia r7!, {d9-d12} + 8020: ecb7 db06 vldmia r7!, {d13-d15} + 8024: f000 b820 b\.w 8068 <__stm32l4xx_veneer_1_r> + 8028: f7f0 a000 udf\.w #0 + 802c: f7f0 a000 udf\.w #0 + +00008030 <__stm32l4xx_veneer_2>: + 8030: ecbd 1b08 vpop {d1-d4} + 8034: ecbd 5b02 vpop {d5} + 8038: f000 b818 b\.w 806c <__stm32l4xx_veneer_2_r> + 803c: f7f0 a000 udf\.w #0 + 8040: f7f0 a000 udf\.w #0 + 8044: f7f0 a000 udf\.w #0 + +00008048 <__stm32l4xx_veneer_3>: + 8048: ed3c 1b08 vldmdb ip!, {d1-d4} + 804c: ed3c 5b08 vldmdb ip!, {d5-d8} + 8050: ed3c 9b08 vldmdb ip!, {d9-d12} + 8054: ed3c db06 vldmdb ip!, {d13-d15} + 8058: f000 b80a b\.w 8070 <__stm32l4xx_veneer_3_r> + 805c: f7f0 a000 udf\.w #0 + +00008060 <_start>: + 8060: f7ff bfce b\.w 8000 <__stm32l4xx_veneer_0> + +00008064 <__stm32l4xx_veneer_0_r>: + 8064: f7ff bfd8 b\.w 8018 <__stm32l4xx_veneer_1> + +00008068 <__stm32l4xx_veneer_1_r>: + 8068: f7ff bfe2 b\.w 8030 <__stm32l4xx_veneer_2> + +0000806c <__stm32l4xx_veneer_2_r>: + 806c: f7ff bfec b\.w 8048 <__stm32l4xx_veneer_3> diff --git a/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s new file mode 100644 index 00000000000..7c7ce018a16 --- /dev/null +++ b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm-dp.s @@ -0,0 +1,27 @@ + .syntax unified + .cpu cortex-m4 + .fpu fpv4-sp-d16 + .text + .align 1 + .thumb + .thumb_func + .global _start +_start: + @ VLDM CASE #1 + @ vldm rx, {...} + @ -> vldm rx!, {8_words_or_less} for each + @ -> sub rx, rx, #size (list) + vldm r10, {d1-d15} + + @ VLDM CASE #2 + @ vldm rx!, {...} + @ -> vldm rx!, {8_words_or_less} for each needed 8_word + @ This also handles vpop instruction (when rx is sp) + vldm r7!, {d5-d15} + @ Explicit VPOP test + vpop {d1-d5} + + @ VLDM CASE #3 + @ vldmd rx!, {...} + @ -> vldmb rx!, {8_words_or_less} for each needed 8_word + vldmdb r12!, {d1-d15} diff --git a/ld/testsuite/ld-arm/stm32l4xx-fix-vldm.s b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm.s index 94aa66e6d3b..b0728016fda 100644 --- a/ld/testsuite/ld-arm/stm32l4xx-fix-vldm.s +++ b/ld/testsuite/ld-arm/stm32l4xx-fix-vldm.s @@ -21,6 +21,7 @@ _start: @ Explicit VPOP test vpop {s1-s9} + @ VLDM CASE #3 @ vldmd rx!, {...} @ -> vldmb rx!, {8_words_or_less} for each needed 8_word vldmdb r11!, {s1-s31} -- 2.30.2