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Diffstat (limited to 'toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0006-lm32.patch')
-rw-r--r--toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0006-lm32.patch190
1 files changed, 190 insertions, 0 deletions
diff --git a/toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0006-lm32.patch b/toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0006-lm32.patch
new file mode 100644
index 000000000..0e0a96092
--- /dev/null
+++ b/toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0006-lm32.patch
@@ -0,0 +1,190 @@
+--- elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12.orig/elf2flt.c 2025-04-14 19:50:51.016711969 +0000
++++ elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12/elf2flt.c 2025-04-14 21:41:22.134771290 +0000
+@@ -62,6 +62,8 @@ const char *elf2flt_progname;
+ #include <elf/bfin.h>
+ #elif defined(TARGET_h8300)
+ #include <elf/h8.h>
++#elif defined(TARGET_lm32)
++#include <elf/lm32.h>
+ #elif defined(TARGET_m68k)
+ #include <elf/m68k.h>
+ #elif defined(TARGET_microblaze)
+@@ -115,6 +117,12 @@ const char *elf2flt_progname;
+ #define ARCH "sh2"
+ #elif defined(TARGET_h8300)
+ #define ARCH "h8300"
++#elif defined(TARGET_lm32)
++#define ARCH "lm32"
++#define FLAT_LM32_RELOC_TYPE_32_BIT 0
++#define FLAT_LM32_RELOC_TYPE_HI16_BIT 1
++#define FLAT_LM32_RELOC_TYPE_LO16_BIT 2
++#define FLAT_LM32_RELOC_TYPE_PERSIST 3
+ #elif defined(TARGET_microblaze)
+ #define ARCH "microblaze"
+ #elif defined(TARGET_e1)
+@@ -375,7 +383,7 @@ output_relocs (
+ int bad_relocs = 0;
+ asymbol **symb;
+ long nsymb;
+-#ifdef TARGET_bfin
++#if defined(TARGET_bfin) || defined(TARGET_lm32)
+ unsigned long persistent_data = 0;
+ #endif
+
+@@ -674,6 +682,40 @@ output_relocs (
+ break;
+ default:
+ goto bad_resolved_reloc;
++#elif defined(TARGET_lm32)
++ case R_LM32_HI16:
++ case R_LM32_LO16:
++ sym_vma = elf2flt_bfd_section_vma(abs_bfd, sym_section);
++ sym_addr += sym_vma + q->addend;
++ /* remember the upper 16 bits */
++ if ((0xFFFF0000UL & sym_addr) != persistent_data) {
++ flat_relocs = (uint32_t *)realloc(flat_relocs,
++ (flat_reloc_count + 1) * sizeof (uint32_t));
++ if (verbose)
++ printf("New persistent data for %08"PRIx32"\n", sym_addr);
++ persistent_data = 0xFFFF0000UL & sym_addr;
++ pflags = FLAT_LM32_RELOC_TYPE_PERSIST;
++ pflags <<= 29;
++ flat_relocs[flat_reloc_count++] = pflags | (sym_addr >> 16);
++ }
++ pflags = q->howto->type == R_LM32_HI16 ?
++ FLAT_LM32_RELOC_TYPE_HI16_BIT :
++ FLAT_LM32_RELOC_TYPE_LO16_BIT;
++ pflags <<= 29;
++ relocation_needed = 1;
++ break;
++ case R_LM32_32:
++ sym_vma = elf2flt_bfd_section_vma(abs_bfd, sym_section);
++ sym_addr += sym_vma + q->addend;
++ pflags = FLAT_LM32_RELOC_TYPE_32_BIT;
++ pflags <<= 29;
++ relocation_needed = 1;
++ break;
++ case R_LM32_CALL:
++ relocation_needed = 0;
++ break;
++ default:
++ goto bad_resolved_reloc;
+ #elif defined(TARGET_m68k)
+ case R_68K_32:
+ goto good_32bit_resolved_reloc;
+@@ -1010,6 +1052,63 @@ output_relocs (
+ continue;
+ #endif
+
++#ifdef TARGET_lm32
++ case R_LM32_HI16:
++ case R_LM32_LO16:
++ sym_vma = elf2flt_bfd_section_vma(abs_bfd, sym_section);
++ sym_addr += sym_vma + q->addend;
++ /* remember the upper 16 bits */
++ if ((0xFFFF0000UL & sym_addr) != persistent_data) {
++ flat_relocs = (uint32_t *)realloc(flat_relocs,
++ (flat_reloc_count + 1) * sizeof (uint32_t));
++ if (verbose)
++ printf("New persistent data for %08"PRIx32"\n", sym_addr);
++ persistent_data = 0xFFFF0000UL & sym_addr;
++ pflags = FLAT_LM32_RELOC_TYPE_PERSIST;
++ pflags <<= 29;
++ flat_relocs[flat_reloc_count++] = pflags | (sym_addr >> 16);
++ }
++ pflags = q->howto->type == R_LM32_HI16 ?
++ FLAT_LM32_RELOC_TYPE_HI16_BIT :
++ FLAT_LM32_RELOC_TYPE_LO16_BIT;
++ pflags <<= 29;
++ relocation_needed = 1;
++ break;
++ case R_LM32_32:
++ sym_vma = elf2flt_bfd_section_vma(abs_bfd, sym_section);
++ sym_addr += sym_vma + q->addend;
++ pflags = FLAT_LM32_RELOC_TYPE_32_BIT;
++ pflags <<= 29;
++ relocation_needed = 1;
++ break;
++ case R_LM32_CALL:
++ sym_vma = 0;
++ sym_addr += sym_vma + q->addend;
++ sym_addr -= q->address;
++ sym_addr = (int32_t)sym_addr >> q->howto->rightshift;
++ {
++ union {
++ uint32_t u;
++ int32_t s;
++ } rangecheck;
++
++ rangecheck.u = (unsigned)sym_addr << 6;
++ rangecheck.s >>= 6;
++ if (rangecheck.u != sym_addr) {
++ printf("ERROR: Relocation overflow for R_LM32_CALL relocation against %s\n", sym_name);
++ ++bad_relocs;
++ continue;
++ }
++ }
++ relocation_needed = 0;
++ r_mem[0] = (r_mem[0] & 0xFCU) |
++ ((sym_addr >> 24) & 0x03U);
++ r_mem[1] = (sym_addr >> 16) & 0xFFU;
++ r_mem[2] = (sym_addr >> 8) & 0xFFU;
++ r_mem[3] = sym_addr & 0xFFU;
++ break;
++#endif
++
+ #ifdef TARGET_microblaze
+ case R_MICROBLAZE_64:
+ /* The symbol is split over two consecutive instructions.
+@@ -1596,6 +1695,21 @@ DIS29_RELOCATION:
+ break;
+ #endif
+
++#ifdef TARGET_lm32
++ case R_LM32_HI16:
++ case R_LM32_LO16:
++ r_mem[2] = (sym_addr >> 8) & 0xFFU;
++ r_mem[3] = sym_addr & 0xFFU;
++ break;
++ case R_LM32_CALL:
++ /*
++ * use_resolved=…
++ * 0: already written above
++ * 1: no write necessary
++ */
++ break;
++#endif
++
+ default:
+ /* The alignment of the build host
+ might be stricter than that of the
+--- elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12.orig/elf2flt.ld.in 2025-04-14 19:50:51.020711942 +0000
++++ elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12/elf2flt.ld.in 2025-04-14 22:23:40.078052838 +0000
+@@ -34,6 +34,7 @@ W_RODAT *(.rodata)
+ W_RODAT *(.rodata1)
+ W_RODAT *(.rodata.*)
+ W_RODAT *(.gnu.linkonce.r*)
++W_RODAT *(.rofixup)
+
+ /* .ARM.extab name sections containing exception unwinding information */
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+--- elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12.orig/flthdr.c 2025-04-14 19:50:43.924759193 +0000
++++ elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12/flthdr.c 2025-04-14 22:01:24.467101158 +0000
+@@ -33,6 +33,8 @@ const char *elf2flt_progname;
+
+ #if defined TARGET_bfin
+ # define flat_get_relocate_addr(addr) (addr & 0x03ffffff)
++#elif defined(TARGET_lm32)
++# define flat_get_relocate_addr(addr) ((addr) & 0x1FFFFFFFU)
+ #else
+ # define flat_get_relocate_addr(addr) (addr)
+ #endif
+@@ -173,6 +175,8 @@ process_file(const char *ifile, const ch
+ addr = ntohl(addr);
+ if (r & 1)
+ addr &= 0x00ffffff;
++#elif defined(TARGET_lm32)
++ addr = ntohl(addr);
+ #endif
+ printf("%"PRIx32"\n", addr);
+ }
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-30 10:47:03 +0000