87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/* elf_reloc_jag.h ELF relocation types for Jaguar RISC */
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/* (c) in 2015 by Frank Wille */
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#define R_JAG_NONE 0 /* No reloc */
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#define R_JAG_ABS32 1 /* Direct 32 bit */
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#define R_JAG_ABS16 2 /* Direct 16 bit */
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#define R_JAG_ABS8 3 /* Direct 8 bit */
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#define R_JAG_REL32 4 /* PC relative 32 bit */
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#define R_JAG_REL16 5 /* PC relative 16 bit */
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#define R_JAG_REL8 6 /* PC relative 8 bit */
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#define R_JAG_ABS5 7 /* Direct 5 bit */
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#define R_JAG_REL5 8 /* PC relative 5 bit */
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#define R_JAG_JR 9 /* PC relative branch (distance / 2), 5 bit */
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#define R_JAG_ABS32SWP 10 /* 32 bit direct, halfwords swapped as in MOVEI */
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#define R_JAG_REL32SWP 11 /* 32 bit PC rel., halfwords swapped as in MOVEI */
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#define RFLD(p,s) (BIGENDIAN?(size==(s)&&(pos&15)==(p)):(size==(s)&&(pos&15)==(16-(p)-(s))))
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if ((*rl)->type <= LAST_STANDARD_RELOC) {
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nreloc *r = (nreloc *)(*rl)->reloc;
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*refsym = r->sym;
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*addend = r->addend;
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pos = r->bitoffset;
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size = r->size;
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*roffset = r->byteoffset;
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mask = r->mask;
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switch ((*rl)->type) {
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case REL_ABS:
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if (pos==0 && mask==~0) {
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if (size == 32)
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t = R_JAG_ABS32;
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else if (size == 16)
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t = R_JAG_ABS16;
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else if (size == 8)
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t = R_JAG_ABS8;
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}
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else if (RFLD(6,5) && mask==0x1f)
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t = R_JAG_ABS5;
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else if (RFLD(0,16) && (mask==0xffff || mask==0xffff0000)
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&& (rl2=(*rl)->next)!=NULL
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&& (*rl)->type==(*rl)->next->type) {
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nreloc *r2 = (nreloc *)rl2->reloc;
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if ((mask==0xffff0000 && r2->mask==0xffff && r2->size==16
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&& r2->bitoffset==0) ||
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(mask==0xffff && r2->mask==0xffff0000 && r2->size==16
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&& r2->bitoffset==16)) {
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t = R_JAG_ABS32SWP;
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*rl = (*rl)->next;
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}
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}
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break;
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case REL_PC:
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if (pos==0 && mask==~0) {
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if (size == 32)
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t = R_JAG_REL32;
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else if (size == 16)
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t = R_JAG_REL16;
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else if (size == 8)
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t = R_JAG_REL8;
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}
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else if (RFLD(6,5) && mask==0x1f)
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t = R_JAG_REL5;
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else if (RFLD(6,5) && mask==0x3e)
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t = R_JAG_JR;
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else if (RFLD(0,16) && (mask==0xffff || mask==0xffff0000)
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&& (rl2=(*rl)->next)!=NULL
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&& (*rl)->type==(*rl)->next->type) {
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nreloc *r2 = (nreloc *)rl2->reloc;
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if ((mask==0xffff0000 && r2->mask==0xffff && r2->size==16
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&& r2->bitoffset==0) ||
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(mask==0xffff && r2->mask==0xffff0000 && r2->size==16
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&& r2->bitoffset==16)) {
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t = R_JAG_REL32SWP;
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*rl = (*rl)->next;
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}
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}
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break;
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}
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}
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#undef RFLD
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