MSP430 Assembler: Define symbols for functions to run through.
gas * config/tc-msp430.c (msp430_make_init_symbols): Define __crt0_run_{preinit,init,fini}_array symbols if .{preinit,init,fini}_array sections exist. * testsuite/gas/msp430/fini-array.d: New test. * testsuite/gas/msp430/init-array.d: New test. * testsuite/gas/msp430/preinit-array.d: New test. * testsuite/gas/msp430/fini-array.s: New test source. * testsuite/gas/msp430/init-array.s: New test source. * testsuite/gas/msp430/preinit-array.s: New test source. * testsuite/gas/msp430/msp430.exp: Add new tests to driver.
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@ -1,3 +1,16 @@
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2019-04-18 Jozef Lawrynowicz <jozef.l@mittosystems.com>
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* config/tc-msp430.c (msp430_make_init_symbols): Define
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__crt0_run_{preinit,init,fini}_array symbols if
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.{preinit,init,fini}_array sections exist.
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* testsuite/gas/msp430/fini-array.d: New test.
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* testsuite/gas/msp430/init-array.d: New test.
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* testsuite/gas/msp430/preinit-array.d: New test.
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* testsuite/gas/msp430/fini-array.s: New test source.
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* testsuite/gas/msp430/init-array.s: New test source.
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* testsuite/gas/msp430/preinit-array.s: New test source.
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* testsuite/gas/msp430/msp430.exp: Add new tests to driver.
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2019-04-17 Jozef Lawrynowicz <jozef.l@mittosystems.com>
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* config/tc-msp430.c (msp430_make_init_symbols): Define __crt0_init_bss
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@ -209,9 +209,9 @@ static struct hash_control *msp430_hash;
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#define CEBL 4
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/* Length. */
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#define STATE_BITS10 1 /* wild guess. short jump */
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#define STATE_WORD 2 /* 2 bytes pc rel. addr. more */
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#define STATE_UNDEF 3 /* cannot handle this yet. convert to word mode */
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#define STATE_BITS10 1 /* Wild guess. short jump. */
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#define STATE_WORD 2 /* 2 bytes pc rel. addr. more. */
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#define STATE_UNDEF 3 /* Cannot handle this yet. convert to word mode. */
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#define ENCODE_RELAX(what,length) (((what) << 2) + (length))
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#define RELAX_STATE(s) ((s) & 3)
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@ -415,6 +415,7 @@ parse_exp (char * s, expressionS * op)
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expression (op);
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if (op->X_op == O_absent)
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as_bad (_("missing operand"));
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/* Our caller is likely to check that the entire expression was parsed.
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If we have found a hex constant with an 'h' suffix, ilp will be left
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pointing at the 'h', so skip it here. */
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@ -1520,6 +1521,32 @@ msp430_make_init_symbols (const char * name)
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|| strncmp (name, ".either.bss", 11) == 0
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|| upper_data_region_in_use)
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(void) symbol_find_or_make ("__crt0_init_highbss");
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/* The following symbols are for the crt0 functions that run through
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the different .*_array sections and call the functions placed there.
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- init_array stores global static C++ constructors to run before main.
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- preinit_array is not expected to ever be used for MSP430.
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GCC only places initialization functions for runtime "sanitizers"
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(i.e. {a,l,t,u}san) and "virtual table verification" in preinit_array.
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- fini_array stores global static C++ destructors to run after calling
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exit() or returning from main.
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__crt0_run_array is required to actually call the functions in the above
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arrays. */
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if (strncmp (name, ".init_array", 11) == 0)
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{
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(void) symbol_find_or_make ("__crt0_run_init_array");
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(void) symbol_find_or_make ("__crt0_run_array");
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}
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else if (strncmp (name, ".preinit_array", 14) == 0)
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{
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(void) symbol_find_or_make ("__crt0_run_preinit_array");
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(void) symbol_find_or_make ("__crt0_run_array");
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}
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else if (strncmp (name, ".fini_array", 11) == 0)
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{
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(void) symbol_find_or_make ("__crt0_run_fini_array");
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(void) symbol_find_or_make ("__crt0_run_array");
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}
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}
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static void
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@ -2003,8 +2030,8 @@ msp430_srcoperand (struct msp430_operand_s * op,
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{
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char *h = l;
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op->reg = 2; /* reg 2 in absolute addr mode. */
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op->am = 1; /* mode As == 01 bin. */
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op->reg = 2; /* Reg 2 in absolute addr mode. */
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op->am = 1; /* Mode As == 01 bin. */
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op->ol = 1; /* Immediate value followed by instruction. */
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__tl = h + 1;
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end = parse_exp (__tl, &(op->exp));
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@ -2554,6 +2581,7 @@ gen_nop (void)
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}
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/* Insert/inform about adding a NOP if this insn enables interrupts. */
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static void
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warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint)
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{
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@ -2564,6 +2592,7 @@ warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint)
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/* 430 ISA does not require a NOP before EINT. */
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|| (! target_is_430x ()))
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return;
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if (gen_interrupt_nops)
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{
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gen_nop ();
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@ -2576,6 +2605,7 @@ warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint)
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/* Use when unsure what effect the insn will have on the interrupt status,
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to insert/warn about adding a NOP before the current insn. */
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static void
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warn_unsure_interrupt (bfd_boolean prev_insn_is_nop,
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bfd_boolean prev_insn_is_dint)
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@ -2587,6 +2617,7 @@ warn_unsure_interrupt (bfd_boolean prev_insn_is_nop,
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/* 430 ISA does not require a NOP before EINT or DINT. */
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|| (! target_is_430x ()))
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return;
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if (gen_interrupt_nops)
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{
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gen_nop ();
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@ -2856,7 +2887,8 @@ msp430_operands (struct msp430_opcode_s * opcode, char * line)
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switch (fmt)
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{
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case 0: /* Emulated. */
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case 0:
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/* Emulated. */
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switch (opcode->insn_opnumb)
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{
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case 0:
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@ -0,0 +1,7 @@
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#objdump: -t
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#name: Check symbols to run .fini_array functions have been defined
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#...
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.*__crt0_run_fini_array.*
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#...
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.*__crt0_run_array.*
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#pass
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@ -0,0 +1,22 @@
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.file "main.c"
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.section .fini_array,"aw"
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.balign 2
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.short 42
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.text
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.balign 2
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.global main
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.type main, @function
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main:
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; start of function
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; framesize_regs: 0
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; framesize_locals: 0
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; framesize_outgoing: 0
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; framesize: 0
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; elim ap -> fp 2
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; elim fp -> sp 0
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; saved regs:(none)
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; start of prologue
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; end of prologue
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.L2:
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BR #.L2
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.size main, .-main
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@ -0,0 +1,7 @@
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#objdump: -t
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#name: Check symbols to run .init_array functions have been defined
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#...
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.*__crt0_run_init_array.*
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#...
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.*__crt0_run_array.*
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#pass
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@ -0,0 +1,22 @@
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.file "main.c"
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.section .init_array,"aw"
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.balign 2
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.short 42
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.text
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.balign 2
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.global main
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.type main, @function
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main:
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; start of function
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; framesize_regs: 0
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; framesize_locals: 0
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; framesize_outgoing: 0
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; framesize: 0
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; elim ap -> fp 2
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; elim fp -> sp 0
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; saved regs:(none)
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; start of prologue
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; end of prologue
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.L2:
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BR #.L2
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.size main, .-main
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@ -43,4 +43,7 @@ if [expr [istarget "msp430-*-*"]] then {
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run_dump_test "nop-unknown-intr-430"
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run_dump_test "nop-unknown-intr-430x"
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run_dump_test "nop-unknown-intr-430x-ignore"
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run_dump_test "preinit-array"
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run_dump_test "init-array"
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run_dump_test "fini-array"
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}
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#objdump: -t
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#name: Check symbols to run .preinit_array functions have been defined
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#...
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.*__crt0_run_preinit_array.*
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#...
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.*__crt0_run_array.*
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#pass
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@ -0,0 +1,22 @@
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.file "main.c"
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.section .preinit_array,"aw"
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.balign 2
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.short 42
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.text
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.balign 2
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.global main
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.type main, @function
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main:
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; start of function
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; framesize_regs: 0
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; framesize_locals: 0
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; framesize_outgoing: 0
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; framesize: 0
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; elim ap -> fp 2
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; elim fp -> sp 0
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; saved regs:(none)
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; start of prologue
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; end of prologue
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.L2:
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BR #.L2
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.size main, .-main
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